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Refining Effect of a New Al3Ti1B1RE Master Alloy on Al Sheets Used for Can Manufacture and Behavior of Rare Earths in Master Alloy 被引量:11
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作者 傅高升 陈文哲 钱匡武 《Journal of Rare Earths》 SCIE EI CAS CSCD 2003年第5期571-576,共6页
The refining effect of Al3Ti1B1RE master alloy on Al sheets used for pressure can manufacture and the behavior of mixed rare earths in master alloy were investigated with XRD, OM, SEM and EDAX. It is found that the r... The refining effect of Al3Ti1B1RE master alloy on Al sheets used for pressure can manufacture and the behavior of mixed rare earths in master alloy were investigated with XRD, OM, SEM and EDAX. It is found that the refining effect of the refiner on the material has superiority over foreign or domestic Al5Ti1B refiner, and the refiner still retains its refining ability for 6 h after adding it to molten Al, thus improving the strength and plasticity of the material remarkably. The excellent refining effect and stability of AlTiBRE refiner result from that RE can lower the surface energy of molten Al and improve the wetting characteristics of molten Al on refinement nuclei such as TiAl 3, TiB 2, etc., thus giving full play to the effect of heterogeneous nucleation and impeding the congregating tendency of TiB 2 phase in molten Al. At the same time, RE gathering in front of solid/liquid interface are also easy to cause composition supercooling in molten Al, thus impeding the growth of α Al grains and promoting α Al nucleation on refinement nuclei. In addition, RE also play certain role in purification and grain refinement, or modification, especially their effect of purification can improve the metallurgical quality of AlTiBRE master alloy. 展开更多
关键词 matel materials al sheets used for can manufacture grain refinement al3Ti1B1RE master alloy refining mechanism rare earths
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Carbon Fiber Breakage Mechanism in Aluminum(Al)/Carbon Fibers(CFs) Composite Sheet during Accumulative Roll Bonding(ARB) Process
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作者 胡淑芬 SUN Zhenzhong +3 位作者 SHEN Fanghua DENG Jun 杨卫平 杨浩坤 《Journal of Wuhan University of Technology(Materials Science)》 SCIE EI CAS CSCD 2024年第1期167-173,共7页
We put forward a method of fabricating Aluminum(Al)/carbon fibers(CFs) composite sheets by the accumulative roll bonding(ARB) method. The finished Al/CFs composite sheet has CFs and pure Al sheets as sandwich and surf... We put forward a method of fabricating Aluminum(Al)/carbon fibers(CFs) composite sheets by the accumulative roll bonding(ARB) method. The finished Al/CFs composite sheet has CFs and pure Al sheets as sandwich and surface layers. After cross-section observation of the Al/CFs composite sheet, we found that the CFs discretely distributed within the sandwich layer. Besides, the tensile test showed that the contribution of the sandwich CFs layer to tensile strength was less than 11% compared with annealed pure Al sheet. With ex-situ observation of the CFs breakage evolution with-16%,-32%, and-45% rolling reduction during the ARB process, the plastic instability of the Al layer was found to bring shear damages to the CFs. At last, the bridging strengthening mechanism introduced by CFs was sacrificed. We provide new insight into and instruction on Al/CFs composite sheet preparation method and processing parameters. 展开更多
关键词 al/CFs composite sheet accumulative roll bonding tensile strength plastic instability carbon fiber breakage
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BEHAVIOR OF FLOW STRESS OF ALUMINUM SHEETS USED FOR PRESSURE CAN DURING COMPRESSION AT ELEVATED TEMPERATURE 被引量:9
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作者 G.S. Fu W.Z. Chen K. W. Qian 《Acta Metallurgica Sinica(English Letters)》 SCIE EI CAS CSCD 2005年第6期756-762,共7页
The behavior of flow stress of Al sheets used for pressure can prepared by different melt-treatment during plastic deformation at elevated temperature was studied by isothermal compression test using Gleeble1500 dynam... The behavior of flow stress of Al sheets used for pressure can prepared by different melt-treatment during plastic deformation at elevated temperature was studied by isothermal compression test using Gleeble1500 dynamic hot-simulation testing machine. The results show that the AI sheets possess the remarkable characteristic of steady state flow stress when they are deformed in the temperature range of 350-500℃ at strain rates within the range of 0.01-10.0s^-1. A hyperbolic sine relationship is found to correlate well the flow stress with the strain rate, and an Arrhenius relationship with the temperature, which implies that the process of plastic deformation at elevated temperature for this material is thermally activated. Compared with the AI pieces prepared by no or conventional melt-treatment, hot deformation activation energy of AI sheets prepared by high-efficient melt-treatment is the smallest ( Q= 168.0kJ/mol), which reveals that the hot working formability of this material is very better, and has directly to do with the effective improvement of its metallurgical quality. 展开更多
关键词 al sheets used for can melt-treatment plastic deformation at elevatedtemperature flow stress hot deformation activation energy
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Al-Cu-Sc铝合金板材不同热处理状态下的组织和力学性能研究
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作者 崔晓磊 刘章光 +2 位作者 赵远杨 马向宇 华坤 《塑性工程学报》 CAS CSCD 北大核心 2024年第9期135-143,共9页
以厚度为3 mm的Al-Cu-Sc铝合金板材为研究对象,利用EBSD技术对人工时效态(T6态)和退火态(O态)板材的微观组织进行分析;对T6态、O态、W态以及经过预拉伸变形和人工时效处理得到的T8态板材在室温下进行单向拉伸测试,研究不同热处理状态下... 以厚度为3 mm的Al-Cu-Sc铝合金板材为研究对象,利用EBSD技术对人工时效态(T6态)和退火态(O态)板材的微观组织进行分析;对T6态、O态、W态以及经过预拉伸变形和人工时效处理得到的T8态板材在室温下进行单向拉伸测试,研究不同热处理状态下板材的力学性能变化规律。结果表明:T6态和O态板材中都存在[001]方向的织构,且O态板材的织构更强。T6态板材的晶界以大角度晶界为主,O态板材的晶界以小角度晶界为主,且其晶粒尺寸远大于T6态板材。T6态和W态Al-Cu-Sc板材轧制方向与横向强度基本一样,而O态板材轧向强度明显高于横向。O态板材的强度最低,T6态板材的塑性最差,而W态板材具有最小的屈强比和最大的应变硬化指数n值,成形性能最好。此外,经过预拉伸和人工时效后得到的T8态板材强度显著提升,当预拉伸变形量为5%和7%时,T8态板材抗拉强度超过500 MPa。 展开更多
关键词 al-Cu-Sc合金板材 热处理 微观组织 轧制方向 力学性能
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Effects of External Electric Field on AlN Precipitation and Recrystallization Texture of Deep-drawing 08Al Killed Steel Sheet 被引量:7
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作者 Xiang ZHAO Zhuochao HU Liang ZUO 《Journal of Materials Science & Technology》 SCIE EI CAS CSCD 2006年第6期747-750,共4页
The effects of an electric field on AIN precipitation and recrystallization texture were investigated. Cold-rolled 08Al killed steel sheets were annealed at 550℃ according to the two-step processes, for various maint... The effects of an electric field on AIN precipitation and recrystallization texture were investigated. Cold-rolled 08Al killed steel sheets were annealed at 550℃ according to the two-step processes, for various maintaining times, with and without applying an electric field. It was found that the electric field promotes the precipitation of the second phase (AlN particles), strengthens the γ-fiber and weakens the α-fiber texture component in the recrystallized specimens. A possible explanation for the reinforcement of γ-fiber texture by the electric field is that the second phase AIN particle promotes the growth of γ-fiber at the expense of differently oriented grains. 展开更多
关键词 Electric field annealing alN Recrystallization texture 08al killed steel sheet
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Influence of process parameters on drilling characteristics of Al 1050 sheet with thickness of 0.2 mm using pulsed Nd:YAG laser 被引量:3
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作者 Dong-Gyu AHN Gwang-Won JUNG 《中国有色金属学会会刊:英文版》 CSCD 2009年第B09期157-163,共7页
The object of this work is to investigate the influence of process parameters on drilling characteristics of an Al 1050 sheet with a thickness of 0.2 mm using a pulsed Nd:YAG laser through numerical analyses and exper... The object of this work is to investigate the influence of process parameters on drilling characteristics of an Al 1050 sheet with a thickness of 0.2 mm using a pulsed Nd:YAG laser through numerical analyses and experiments. By comparing the numerical analyses with the experiments, a proper numerical model was obtained. From the results of the numerical analyses and the experiments, the effects of process parameters on entrance diameters of drilled holes, shapes of the holes, taper angles of the holes and temperature distributions in the vicinity of the holes were examined quantitatively. In addition, the optimal drilling condition was estimated to improve the quality of the drilled holes. 展开更多
关键词 YAG激光器 工艺参数 Nd 脉冲 井用 厚度 色基 数值分析
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Effect of Al coating conditions on laser weldability of Al coated steel sheet 被引量:4
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作者 Jung-Han LEE Jong-Do KIM +1 位作者 Jin-Seok OH Seo-Jeong PARK 《中国有色金属学会会刊:英文版》 EI CSCD 2009年第4期946-951,共6页
Al coated steel sheets with excellent heat resistance,thermal reflection,and corrosion resistance are widely used in various applications.The laser weldability of the Al coated steel sheet for full penetration welding... Al coated steel sheets with excellent heat resistance,thermal reflection,and corrosion resistance are widely used in various applications.The laser weldability of the Al coated steel sheet for full penetration welding was reported.The phenomenon caused by intermixed aluminum and behavior of aluminum in the weld were investigated.Al coated steel sheets that have various thickness and coating mass were prepared for laser welding.The effects of parameters such as welding conditions and Al coating conditions were investigated.Al content mixed in the weld after laser welding was evaluated,and then a correlation between the mixed Al and mechanical properties was investigated.The results show that the Al-rich zones which have Fe-Al intermetallic compounds are found in the weld.The intermetallic compounds cause the decreased strength of the weld. 展开更多
关键词 铝合金焊接 钢板焊接 激光焊接 al涂层 金属间化合物 涂层钢板 涂层质量 焊接条件
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Effect of Mg on microstructures and properties of Al-Mg-Si-Cu aluminium alloys for automotive body sheets 被引量:1
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作者 刘宏 宋文举 +2 位作者 赵刚 刘春明 左良 《中国有色金属学会会刊:英文版》 CSCD 2005年第1期30-34,共5页
The effects of variation of Mg content on microstructures, the tensile properties and the formability of Al-Mg-Si-Cu alloys for automotive body sheets were investigated by means of scan electron microscopy, optical me... The effects of variation of Mg content on microstructures, the tensile properties and the formability of Al-Mg-Si-Cu alloys for automotive body sheets were investigated by means of scan electron microscopy, optical metallographic analysis, tensile and Ericsson tests. The results show that for Al-Mg-Si-Cu aluminium alloys with excessive Si, with an increment of Mg content, the strength enhances, the specific elongation and Erisson values of alloys decrease, and the number of Mg2Si constituent increases and that of Al(MnFe)Si type constituents reduces. Al-Mg-Si-Cu aluminium alloys with excessive Si for automotive body sheets can present obviously the paint bake hardenability during the paint bake cycle (i.e. artificial aging at 170 ℃ for 30 min immediately after the solution treatment and quenching). Suitable Mg content should be controlled in the range of 0.8% and 1.2%(mass fraction). 展开更多
关键词 铝镁硅铜合金 自动机体板 硅化镁 冲压成型 热处理
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热压制备Ni/Al微叠层复合板的协调变形行为和气压胀形成形性
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作者 鲁羽鹏 殷宏亮 +3 位作者 席先铮 孟令健 林鹏 梁伟 《Transactions of Nonferrous Metals Society of China》 SCIE EI CAS CSCD 2024年第3期786-797,共12页
为了制造NiAl合金复杂薄壁构件,采用真空热压法制备一种新型Ni/Al微叠层复合板(NAMCS)。基于不同温度的单向拉伸试验,研究Ni/Al微叠层复合板的力学性能。为了阐明Ni/Al微叠层复合板的单向拉伸协调变形机制,通过扫描电子显微镜对不同拉... 为了制造NiAl合金复杂薄壁构件,采用真空热压法制备一种新型Ni/Al微叠层复合板(NAMCS)。基于不同温度的单向拉伸试验,研究Ni/Al微叠层复合板的力学性能。为了阐明Ni/Al微叠层复合板的单向拉伸协调变形机制,通过扫描电子显微镜对不同拉伸应变下的变形组织进行表征。结果表明,在5%应变、室温和300℃条件下,NiAl_(3)层和Ni_(2)Al_(3)层中形成了一些裂纹。在600℃和20%应变条件下,在NiAl3层观察到一些微孔。样品在78.7%的拉伸应变断裂时,Ni_(2)Al_(3)层也未出现裂纹,表现出良好的协调变形能力。Ni/Al微叠层复合板的高温自由气压胀形试验表明,600℃时其极限胀形比(极限胀形高度与凹模直径之比)达到33.3%,表现出良好的成形性。 展开更多
关键词 Ni/al微叠层复合板 力学性能 协调变形机制 气压胀形 成形性
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Preparation of Ti-Al alloy sheet by electron beam physical vapor deposition
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作者 马李 赫晓东 孙跃 《中国有色金属学会会刊:英文版》 CSCD 2007年第A01期477-481,共5页
Ti-Al thin sheet with dimension of 450 mm×450 mm×0.2 mm was prepared by electron beam physical vapor deposition(EB-PVD) technology. The surface and cross-section pattern of as-deposited sample were studied b... Ti-Al thin sheet with dimension of 450 mm×450 mm×0.2 mm was prepared by electron beam physical vapor deposition(EB-PVD) technology. The surface and cross-section pattern of as-deposited sample were studied by SEM and AFM,and then the composition and phase were analysed by XRD and EPMA. Finally,the effect on deposit by re-evaporation of Al was explored by calculating the ratio of re-evaporating capacity with depositing capacity of Al on the substrate. The results indicate that the evaporation process with Nb addition into the molten pool makes it earlier to reach the steady-state. The existing equiaxed crystal and columnar crystal along the cross-sectional may be caused by the transformation latent heat released during the transition course of atoms from gaseous state to solid state. The effect on deposit by re-evaporation of Al can be neglected because the re-evaporating capacity of Al is far below that of the depositing capacity. 展开更多
关键词 电子束 物理性能
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On the Relation of Grain Orientation and Opening Crack of an Al-Cu-Mg Sheet
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作者 Cai Hu 《Engineering(科研)》 2017年第5期510-516,共7页
In this paper, the orientation of grains which adjacent to a developed opening crack was investigated by EBSD. A definition of θ has been came up with which represents the angle between the principal stress plane and... In this paper, the orientation of grains which adjacent to a developed opening crack was investigated by EBSD. A definition of θ has been came up with which represents the angle between the principal stress plane and each plane of the grains. Smaller θ means easier to crack. It gave a good explanation of the crack propagation throughout the grains. It also revealed that propagation path is along with the plane. This finding will give a prediction of tear properties and help us understanding the cracking mechanism and the behavior of tearing. 展开更多
关键词 al-CU-MG sheet TEARING CRACK GRAIN Orientation Plane CRACK Propagation
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Effect of Sr on forming properties of Al-Mg-Si based alloy sheets
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作者 卢广玺 陈海军 关绍康 《中国有色金属学会会刊:英文版》 CSCD 2006年第A03期1489-1492,共4页
The effects of Sr element on the forming properties of the Al-Mg-Si based alloy sheets were studied by tensile test, metallograph, DSC, XRD, SEM and TEM. The results show that the tensile strength of aluminum alloy sh... The effects of Sr element on the forming properties of the Al-Mg-Si based alloy sheets were studied by tensile test, metallograph, DSC, XRD, SEM and TEM. The results show that the tensile strength of aluminum alloy sheet added 0.033%(mass fraction)Sr increases comparing with that of free Sr. Simultaneously, the forming properties of sheets evidently increase, the elongation hardenability (n) and plastic strain ratio (r) and Erichsen number increase 27.8%, 11.1%, 10.8% and 12%, respectively, and the forming limit diagram increases evidently, too. The analysis shows that Sr is surface active element, which can refine grains of alloys, promote precipitation, reduce activation energy ofβ' phase, and lead the formation ofα-(Al8Fe2Si) phase instead ofβ-(Al5FeSi) phase. As a result, the forming properties of the alloy sheet increase. 展开更多
关键词 可成形性 合金 有色金属
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超高强Al-Zn-Mg-Cu系合金板材研究
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作者 黎柏康 赵佳蕾 +5 位作者 秦翔智 李兵 赵巍 章晶林 周毅 李瑞霞 《轻合金加工技术》 CAS 2024年第5期22-26,共5页
利用金相显微镜、扫描电镜、拉伸试验机研究了超高Zn、Mg含量和微量Sc、Sm稀土元素对Al-Zn-Mg-Cu系合金板材微观组织和力学性能的影响。研究结果表明:板材强度随Zn、Mg元素含量的增加而提高;添加微量Sm元素对细化晶粒没有效果,且在基体... 利用金相显微镜、扫描电镜、拉伸试验机研究了超高Zn、Mg含量和微量Sc、Sm稀土元素对Al-Zn-Mg-Cu系合金板材微观组织和力学性能的影响。研究结果表明:板材强度随Zn、Mg元素含量的增加而提高;添加微量Sm元素对细化晶粒没有效果,且在基体中形成不能消除的含Sm第二相,对性能不利;Sc可有效细化铸锭晶粒,抑制再结晶,并显著提高板材强度,Sc元素添加量达到w(Sc)=0.2%可使板材屈服强度提升59 MPa,抗拉强度提升51 MPa;在高合金化的基础上复合添加w(Zr)=0.12%和w(Sc)=0.2%,板材屈服强度可达726 MPa,抗拉强度可达752 MPa。 展开更多
关键词 al-Zn-Mg-Cu系合金板材 高合金化 稀土元素 显微组织 力学性能
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退火工艺对Al/Mg/Al复合板界面结合与阻尼性能的影响 被引量:5
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作者 王敬丰 吴忠山 +3 位作者 王少华 杨文翔 马社 潘复生 《材料导报》 EI CAS CSCD 北大核心 2016年第24期59-65,共7页
研究了Al/Mg/Al三明治结构复合板的退火热处理工艺,探讨了退火温度、时间对复合界面和阻尼性能的影响。结果表明:退火使得Mg层中的孪晶及变形组织消失,晶粒明显长大,且可以促进Al-Mg界面原子的相互扩散。随着退火温度的升高,界面效应对... 研究了Al/Mg/Al三明治结构复合板的退火热处理工艺,探讨了退火温度、时间对复合界面和阻尼性能的影响。结果表明:退火使得Mg层中的孪晶及变形组织消失,晶粒明显长大,且可以促进Al-Mg界面原子的相互扩散。随着退火温度的升高,界面效应对复合板的阻尼性能影响由不利转变为有利,在250℃下随着退火时间的延长,复合板的阻尼性能有一定的提高。综合复合板的组织与性能要求,得到Al/Mg/Al复合板的最佳退火工艺为250℃×2h,在应变振幅为5×10^(-4)下复合板的阻尼值Q^(-1)达0.045。 展开更多
关键词 al/Mg/al复合板 退火工艺 复合界面 阻尼性能
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Mn对Al-Mg-Si-Cu铝合金车身板组织和性能的影响 被引量:17
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作者 刘宏 赵刚 +1 位作者 刘春明 左良 《东北大学学报(自然科学版)》 EI CAS CSCD 北大核心 2005年第4期347-350,共4页
通过拉伸和埃里克森实验以及扫描电镜/能谱、透射电镜和金相分析,研究Mn的质量分数对Al Mg Si Cu铝合金汽车板显微组织、力学性能和成形性的影响·研究表明,随Mn质量分数增加,Al Mg Si Cu汽车板铝合金不可溶结晶相及弥散相粒子数量... 通过拉伸和埃里克森实验以及扫描电镜/能谱、透射电镜和金相分析,研究Mn的质量分数对Al Mg Si Cu铝合金汽车板显微组织、力学性能和成形性的影响·研究表明,随Mn质量分数增加,Al Mg Si Cu汽车板铝合金不可溶结晶相及弥散相粒子数量均增加,不可溶结晶相使合金组织纤维化对板材冲压成形性不利,弥散相粒子阻碍再结晶晶粒长大;提高Mn的质量分数,Al Mg Si Cu汽车板铝合金的强度增加,但延伸率和冲压成形性降低· 展开更多
关键词 al—Mg-Si—Cu—Mn铝合金 车身板 al(FeMn)Si相 弥散相 冲压成形性
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基于最大m值法和恒应变速率法的Ti_3Al基合金超塑变形行为研究 被引量:4
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作者 付明杰 许慧元 +1 位作者 刘佳佳 韩秀全 《材料工程》 EI CAS CSCD 北大核心 2015年第11期32-38,共7页
分别采用最大m值法和恒应变速率法对Ti-24Al-15Nb-1.5Mo合金板材进行超塑拉伸,研究了940~1000℃、5.5×10-5~1.7×10-3s-1和不同拉伸轴方向的超塑性变形行为。结果表明:采用最大m值法获得的伸长率均高于恒应变速率法的,分别在... 分别采用最大m值法和恒应变速率法对Ti-24Al-15Nb-1.5Mo合金板材进行超塑拉伸,研究了940~1000℃、5.5×10-5~1.7×10-3s-1和不同拉伸轴方向的超塑性变形行为。结果表明:采用最大m值法获得的伸长率均高于恒应变速率法的,分别在980℃、垂直轧制方向获得了1596%的最大伸长率和960℃、3.3×10^-4s^-1、与轧制方向成45°获得了932%的伸长率。原始纤维组织经过超塑变形后发生等轴化,并且等轴晶粒随着应变速率的减小和温度的升高,长大程度逐渐增大。最大m值法超塑拉伸可以明显减少孔洞的产生。 展开更多
关键词 Ti3al板材 超塑性 晶粒等轴化 孔洞
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预回复对08Al深冲钢板再结晶组织及织构的影响 被引量:14
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作者 胡卓超 蒋奇武 +1 位作者 赵骧 左良 《东北大学学报(自然科学版)》 EI CAS CSCD 北大核心 2001年第2期146-149,共4页
利用X射线衍射技术 (ODF分析 )并结合光学显微镜和透射电子显微镜观察了本溪钢铁公司生产的 0 8Al深冲钢板的织构和组织 ,研究了预回复对其再结晶织构及组织的影响·结果表明 :预回复退火具有推迟冷轧 0 8Al深冲钢板再结晶的作用 ,... 利用X射线衍射技术 (ODF分析 )并结合光学显微镜和透射电子显微镜观察了本溪钢铁公司生产的 0 8Al深冲钢板的织构和组织 ,研究了预回复对其再结晶织构及组织的影响·结果表明 :预回复退火具有推迟冷轧 0 8Al深冲钢板再结晶的作用 ,但并未改变 0 8Al深冲钢板的再结晶形成机制·0 8Al深冲钢板在预回复下再结晶γ纤维织构增强的原因主要是由于预回复降低了形变储能 ,抑制了其他取向晶核的形成及长大 。 展开更多
关键词 80al深冲钢板 预回复 再结晶 结构 组织 形变储能 γ取向晶粒
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“挤压-轧制”对Al-Pb合金板材微观结构与力学性能的影响 被引量:2
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作者 邓运来 陈健美 +2 位作者 张新明 娄燕雄 刘贵材 《金属热处理》 CAS CSCD 北大核心 2002年第9期22-25,共4页
研究了Al Pb合金制成板材过程中“挤压 轧制”对板材微观结构与力学性能的影响。结果显示 ,Al Pb合金变形前Pb分布在枝晶间隙或“嵌”在基体中 ;合金热挤压成板材后 ,合金颗粒内部的Pb细化 ,但变形颗粒新生表面的Pb粗化 ,在随后的轧制... 研究了Al Pb合金制成板材过程中“挤压 轧制”对板材微观结构与力学性能的影响。结果显示 ,Al Pb合金变形前Pb分布在枝晶间隙或“嵌”在基体中 ;合金热挤压成板材后 ,合金颗粒内部的Pb细化 ,但变形颗粒新生表面的Pb粗化 ,在随后的轧制变形及热处理时难以消除“Pb粗化”造成的遗传影响。合金板材的铝基体发生再结晶前 ,力学性能主要受Pb形貌影响 ;发生再结晶后 。 展开更多
关键词 挤压 轧制 铝-铅合金 板材 微观结构 力学性能
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Al含量对2.2%Si无取向硅钢组织、织构和磁性能的影响 被引量:6
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作者 苗晓 张文康 王一德 《特殊钢》 北大核心 2011年第6期56-59,共4页
通过实验室25 kg真空感应炉冶炼和锻轧研究了0.26%~0.95%Al含量对0.5 mm 2.2%Si无取向硅钢冷轧板组织、织构和磁性能的影响。试验结果表明,0.26%~0.81%Al含量时,随钢中Al含量的增加,成品退火钢板的晶粒尺寸增加同时铁损减少;当Al含量... 通过实验室25 kg真空感应炉冶炼和锻轧研究了0.26%~0.95%Al含量对0.5 mm 2.2%Si无取向硅钢冷轧板组织、织构和磁性能的影响。试验结果表明,0.26%~0.81%Al含量时,随钢中Al含量的增加,成品退火钢板的晶粒尺寸增加同时铁损减少;当Al含量大于0.81%时,随Al含量增加,钢板的晶粒尺寸减小,同时铁损增加。Al含量对硅钢板磁感的影响没有明显的规律。2.2%Si无取向硅钢的合适Al含量为0.48%~0.81%。 展开更多
关键词 2.2%Si 无取向硅钢 0.5 mm冷轧板 al含量 组织 织构 磁性能
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含稀土Al-Mg-Si汽车板材的时效特性和组织性能 被引量:4
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作者 贺素霞 刘忠侠 +5 位作者 张天清 杨明生 董新平 王文彦 翁永刚 王明星 《轻合金加工技术》 CAS 北大核心 2007年第3期49-53,共5页
研究了添加不同含量的稀土元素对Al-Mg-Si汽车板材的时效特性及微观组织的影响。研究表明,提高时效温度可使合金达到硬度峰值的时间缩短,但硬度值较低。稀土可以细化晶界析出物,改善第二相的分布和形状,减小第二相沉淀质点的几何尺寸,... 研究了添加不同含量的稀土元素对Al-Mg-Si汽车板材的时效特性及微观组织的影响。研究表明,提高时效温度可使合金达到硬度峰值的时间缩短,但硬度值较低。稀土可以细化晶界析出物,改善第二相的分布和形状,减小第二相沉淀质点的几何尺寸,增大粒子的分布密度且分布较均匀,加速了合金的时效过程,使得合金达到峰值时效的时间变短,硬度值有所提高。预时效可以形成细密、均匀、弥散的G.P.区,使得在随后的时效过程中形成高密度的强化相,减少自然时效的不利影响,提高合金的硬度。含有稀土的合金预时效后硬度提高约28%,加入稀土后较为适宜的预时效工艺为140℃10 min。 展开更多
关键词 al-Mg-Si汽车板材 稀土元素 预时效 硬度
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