期刊文献+
共找到124篇文章
< 1 2 7 >
每页显示 20 50 100
Wear Performance of Laser Surface Hardened GCr15 Steel 被引量:4
1
作者 雷声 《Journal of Wuhan University of Technology(Materials Science)》 SCIE EI CAS 2010年第1期84-88,共5页
In order to assess the new tribological properties of laser surface hardened GCr15 steel, the wear resistance between specimens treated with laser and those of conventionally hardened under dry sliding conditions was ... In order to assess the new tribological properties of laser surface hardened GCr15 steel, the wear resistance between specimens treated with laser and those of conventionally hardened under dry sliding conditions was compared. The change of wear mechanisms in laser hardened GCr15 resulted in a distinct difference in wear rates. The results showed that quenched zones not only had sufficient depth of hardening and higher hardness, but had more retained austenite and finer carbides because of a higher degree of carbide dissolution. Laser surface hardened GCr15 steel specimens exhibited superior wear resistance to their conventionally hardened specimens due to the effects of the microstructure hardening, high hardness and toughness. The wear mechanism for both the laser quenched layer and conventionally hardened layer was highly similar, generally involving adhesive, material transfer, wear-induced oxidation and plowing. When conventionally hardened block specimens rubbed against the laser hardened specimens, the surface of conventionally hardened block specimens was polished. The microstructural thermal stability was increased after laser surface treatment. 展开更多
关键词 laser hardening dry sliding conditions GCr15 steel wear mechanisms
下载PDF
Microstructural evolution of GCr15 steel during austenitizing and quenching considering C and Cr content 被引量:1
2
作者 刘青龙 钱东升 魏文婷 《Journal of Central South University》 SCIE EI CAS CSCD 2016年第10期2492-2499,共8页
Microstructural evolution of GCr15 steels with different C and Cr contents during austenitizing and quenching was studied. Thermodynamic analysis of cementite dissolution was implied to obtain the critical temperature... Microstructural evolution of GCr15 steels with different C and Cr contents during austenitizing and quenching was studied. Thermodynamic analysis of cementite dissolution was implied to obtain the critical temperature. The coordination number x in Fe_xCr_(3-x)C and the volume fraction of undissolved cementite were computed according to element conservation and equilibrium phase diagram. The M_S(martensite transformation temperature) was calculated by using empirical formula. The retained austenite content was calculated with further consideration of quenching temperature. The results showed that the coordination number and the undissolved cementite content were promoted by the austenitizing temperature and carbon content of the steel. Increasing Cr element reduced the coordination number.GCr15 steels with different components had nearly the same M_S when austenitization at 830 °C to 860 °C. The interaction of C and Cr complicated the evolution of M_S and retained austenite content. The results were in good agreement with the literature, which could guide to obtain specified retained austenite and/or carbides. 展开更多
关键词 GCr15 steel AUSTENITIZATION QUENCHING thermodynamic calculation KINETICS
下载PDF
Effects of Suspension Casting on Solidification Process of GCr15 Steel Ingot
3
作者 Yan Yu Qijie Zhai +2 位作者 Changhu Xing Jinbao Chen Hanqi Hu(Foundry Institution, University of Science and Technology Beijing, Beijing 100083, China) 《International Journal of Minerals,Metallurgy and Materials》 SCIE EI CAS CSCD 1998年第3期179-179,共1页
The mechanism of inoculation in the case of suspension casting process has been studied through solidification kinetics. The effect of suspension casting process on temperature field, solidification rate, temperature ... The mechanism of inoculation in the case of suspension casting process has been studied through solidification kinetics. The effect of suspension casting process on temperature field, solidification rate, temperature gap of crystallization, effective distribution coefficient of solute and nucleation frequency during solidification process in steel ingot were discussed on the base of experiments. It has been found that the suspension casting process can increase both cooling at and solidification rate of steel ingot, improve the temperature field and solute distribution, narrow the temperature gap of crystallication, and increase the nucleation frequency. Thus, the solidification time can be shorten, the solute can be well distributied, the shrinkage porosity can be reduced and the grain of crystallization can be fined. 展开更多
关键词 suspension cating process solidification kinetics solidification rate GCr15 steel
下载PDF
The microstructural nanoindentation characteristics of different phases in precision annealed GCr15 steel
4
作者 Zhang Junbao Yang Xiaoping Wang Xiufang Shi Bi Song Hongwei 《Baosteel Technical Research》 CAS 2008年第4期51-54,共4页
This study characterizes the mechanical properties and volume fractions of the different phases in precision annealed GCr15 steel using nanoindentation technology. Experimental results indicate that the nanoindentatio... This study characterizes the mechanical properties and volume fractions of the different phases in precision annealed GCr15 steel using nanoindentation technology. Experimental results indicate that the nanoindentation hardness of cementite grains is between 14.15 GPa and 17.61 GPa,with a mean value of 15.40 GPa. This hardness is much higher than the hardness of ferrite grains. The nanoindentation hardness of ferrite is between 2.78 GPa and 4.89 GPa, with a mean value of 3.35 GPa. The volume fractions of the different phases were also determined using nanoindentation technology, and the volume fraction of cementite in the steel was identified as 15%. 展开更多
关键词 NANOINDENTATION GCr15 steel mechanical properties of microstructures volume fractions of different phases
下载PDF
15-15Ti ODS奥氏体钢晶粒组织与纳米粒子的透射电镜表征 被引量:2
5
作者 龚翱翔 徐驰 +1 位作者 安瞻 佟振峰 《材料导报》 EI CAS CSCD 北大核心 2024年第10期190-195,共6页
15-15Ti奥氏体不锈钢由于其优异的耐腐蚀性能和高温力学性能成为钠冷快堆包壳的候选材料,其高温力学性能和抗辐照肿胀能力可以通过氧化物弥散强化(ODS)进行增强。本工作对通过机械合金化以及锻造工艺制备的15-15Ti ODS奥氏体钢和作为参... 15-15Ti奥氏体不锈钢由于其优异的耐腐蚀性能和高温力学性能成为钠冷快堆包壳的候选材料,其高温力学性能和抗辐照肿胀能力可以通过氧化物弥散强化(ODS)进行增强。本工作对通过机械合金化以及锻造工艺制备的15-15Ti ODS奥氏体钢和作为参比材料的15-15Ti奥氏体钢的微观结构进行研究,对ODS钢中氧化物颗粒的分布以及强化机制有了较为深入的认识。研究发现氧化物弥散粒子分布总体均匀但有成团聚集倾向。Y-Zr-O粒子的平均粒径为(9.97±0.04) nm,平均粒距为(17.25±0.68) nm,数密度约为4.49×10^(22)m^(-3)。在透射电镜明场像下观察到ODS样品中氧化物颗粒对位错的钉扎作用。扫描透射(STEM)结合能谱分析显示ODS样品中有两种氧化物,分别为占比较少的Al_(2)O_(3)以及占比较多的Y_(4)Zr_(3)O_(12)。高分辨电镜表征发现第二相粒子与基体之间出现共格或半共格界面的迹象,并且少数粒子周围出现非晶化界面。 展开更多
关键词 15-15Ti 奥氏体钢 微观结构 氧化弥散强化颗粒 透射电子显微镜
下载PDF
铣削15-5PH不锈钢的切削力研究
6
作者 宋善奇 金成哲 +1 位作者 高可 鑫龙 《工具技术》 北大核心 2024年第8期118-123,共6页
为研究铣削加工15-5PH不锈钢时切削参数对切削力的影响规律,基于Deform-3D软件采用正交试验法进行铣削加工仿真,通过15-5PH不锈钢的铣削加工试验对比分析仿真和试验结果,验证了仿真模型的合理性。研究结果表明,影响铣削力的切削参数依次... 为研究铣削加工15-5PH不锈钢时切削参数对切削力的影响规律,基于Deform-3D软件采用正交试验法进行铣削加工仿真,通过15-5PH不锈钢的铣削加工试验对比分析仿真和试验结果,验证了仿真模型的合理性。研究结果表明,影响铣削力的切削参数依次为:每齿进给量f z>径向切削深度a_(e)>轴向切削深度a_(p)>切削速度v_(c);最佳切削参数组合为v_(c)=100m/min,f z=0.02mm/z,a_(p)=1.5mm和a_(e)=0.4mm;切削速度逐步增大会导致切削力降低;增大每齿进给量会提高切削力;径向切削深度的增大会使切削力随之上升,但增长速率较低;切削力随轴向切削深度的增大而增大,增长速率较高。 展开更多
关键词 铣削 15-5PH不锈钢 切削力 切削参数
下载PDF
15-15Ti奥氏体不锈钢热老化小尺寸试样单轴拉伸行为的GTN微观损伤模型研究
7
作者 李帅 张子诚 +2 位作者 黎军顽 宁广胜 钟巍华 《上海金属》 CAS 2024年第3期67-74,82,共9页
通过加速热老化试验模拟了15-15Ti奥氏体不锈钢的辐照效应,构建了Ramberg-Osgood力学本构模型和GTN(Gurson-Tvergaard-Needleman)微观损伤模型。结合有限元方法,探讨了热老化不同时间的15-15Ti奥氏体不锈钢小尺寸试样在不同温度拉伸试... 通过加速热老化试验模拟了15-15Ti奥氏体不锈钢的辐照效应,构建了Ramberg-Osgood力学本构模型和GTN(Gurson-Tvergaard-Needleman)微观损伤模型。结合有限元方法,探讨了热老化不同时间的15-15Ti奥氏体不锈钢小尺寸试样在不同温度拉伸试验过程中的应力-应变响应行为和损伤断裂过程。结果表明:热老化小尺寸试样中有少量碳化物析出和大量σ相形成,导致其抗拉强度和屈服强度显著下降;未热老化试样的拉伸断口中有大量韧窝,为韧性断裂,而热老化试样的拉伸断口中韧窝数量明显减少,析出相周围有撕裂棱,为脆性断裂;热老化试样标距段的应力集中和颈缩均延迟发生;热老化试样的断裂应变明显小于未热老化试样;热老化能促使小尺寸试样中孔洞的聚集和增多,从而加速失效。 展开更多
关键词 15-15Ti 奥氏体不锈钢 小尺寸试样 热老化 GTN 模型
下载PDF
加工工艺对高强度15-5PH钢力学性能与侵彻性能的影响
8
作者 程军 吴巍 +1 位作者 胡志明 张笑瀛 《北京理工大学学报》 EI CAS CSCD 北大核心 2024年第3期251-259,共9页
为获得加工工艺对高强度钢性能的影响,选取激光选区熔化(selective laser melting,SLM)和锻造工艺加工弹丸,通过镜像观测、准静态、SHPB和混凝土侵彻等研究手段,对比分析了三种SLM制造工艺以及锻造工艺对于15-5PH钢性能的影响.结果表明,... 为获得加工工艺对高强度钢性能的影响,选取激光选区熔化(selective laser melting,SLM)和锻造工艺加工弹丸,通过镜像观测、准静态、SHPB和混凝土侵彻等研究手段,对比分析了三种SLM制造工艺以及锻造工艺对于15-5PH钢性能的影响.结果表明,SLM技术细化了15-5PH钢组织的晶粒,SLM成型的15-5PH钢力学性能有提升,其中SLM-B工艺的提升效果明显,SLM-B成型的15-5PH钢的准静态屈服强度相较于锻造工艺提升幅度达13.1%;其动态屈服强度相较于锻造工艺钢提高了9.0%;且SLM-B工艺对弹丸抗磨蚀性能最好.试验结果表明SLM工艺提高了15-5PH钢力学性能和抗磨蚀能力. 展开更多
关键词 激光选区熔化 15-5PH钢 力学性能 侵彻 磨蚀
下载PDF
15-5PH不锈钢紧固件在高海水盐雾环境中的应用
9
作者 曹安港 宗浩 +1 位作者 刘欣欣 赵显涛 《腐蚀与防护》 CAS CSCD 北大核心 2024年第7期84-89,共6页
C01型膜盘联轴器在工作过程时,长期处于高浓度的海水盐雾环境中,联轴器的紧固件材料不但要有较高的力学性能,而且应具有较强的耐海水盐雾腐蚀性能。通过点蚀、缝隙腐蚀、应力腐蚀、疲劳腐蚀、电偶腐蚀等试验,测试了15-5PH(0Cr15Ni5Cu4Nb... C01型膜盘联轴器在工作过程时,长期处于高浓度的海水盐雾环境中,联轴器的紧固件材料不但要有较高的力学性能,而且应具有较强的耐海水盐雾腐蚀性能。通过点蚀、缝隙腐蚀、应力腐蚀、疲劳腐蚀、电偶腐蚀等试验,测试了15-5PH(0Cr15Ni5Cu4Nb)不锈钢材料用于膜盘联轴器紧固件的可行性。结果表明:15-5PH不锈钢发生了明显的缝隙腐蚀和轻微的点蚀,但对应力腐蚀和疲劳腐蚀不敏感,且与TC4钛合金耦合后无电化学腐蚀。15-5PH不锈钢可以作为开放海洋环境中TC4钛合金膜盘的紧固件。但应注意避免缝隙腐蚀的发生。 展开更多
关键词 15-5PH不锈钢 联轴器紧固件 海水 盐雾 耐蚀性试验
下载PDF
影响15-5PH沉淀硬化不锈钢硬度的因素
10
作者 赵广进 任卫斌 +1 位作者 赵金龙 李剑雨 《热处理》 CAS 2024年第2期27-29,33,共4页
炼制了两炉化学成分不同的15-5PH马氏体沉淀硬化不锈钢并制备了试样。对试样进行了1040℃保温90 min油冷的固溶处理及铣削、钻削、磨削试验和分别在400~620℃时效1.5、4、8和12 h。随后检测了试样的硬度和显微组织。结果表明:切削加工对... 炼制了两炉化学成分不同的15-5PH马氏体沉淀硬化不锈钢并制备了试样。对试样进行了1040℃保温90 min油冷的固溶处理及铣削、钻削、磨削试验和分别在400~620℃时效1.5、4、8和12 h。随后检测了试样的硬度和显微组织。结果表明:切削加工对15-5PH马氏体沉淀硬化不锈钢的硬度无明显影响;在450℃时效,随着时效时间延长至4 h,15-5PH钢的硬度提高,并达到了44~46 HRC的硬度要求;15-5PH钢的最佳时效工艺为450℃保温4 h。 展开更多
关键词 15-5PH马氏体沉淀硬化不锈钢 硬度 机加工 时效
下载PDF
EAF+VAR生产15-5PH不锈钢点状缺陷成因及改进
11
作者 章东海 潘明旭 +2 位作者 李旭 许勇 熊皓 《特殊钢》 2024年第4期94-98,共5页
采用冶炼成本较低的EAF→VOD→LF+VD→浇注6 t电极棒→真空自耗重熔(VAR)的新工艺流程代替传统双真空冶炼工艺生产15-5PH不锈钢,使用扫描电镜、ASPEX等对其探伤点状缺陷进行检测,并分析其产生原因。结果表明,自耗电极中已存在铝酸钙及... 采用冶炼成本较低的EAF→VOD→LF+VD→浇注6 t电极棒→真空自耗重熔(VAR)的新工艺流程代替传统双真空冶炼工艺生产15-5PH不锈钢,使用扫描电镜、ASPEX等对其探伤点状缺陷进行检测,并分析其产生原因。结果表明,自耗电极中已存在铝酸钙及镁铝尖晶石非金属夹杂物,真空自耗重熔过程的不稳定,将锭冠和非金属漂浮物卷入熔池残留在自耗锭中,导致锻造成材后产生点状缺陷。通过工艺优化改进,VOD还原渣料由铝粒9 kg/t调整为硅铁8 kg/t、铝粒5 kg/t复合脱氧,精炼渣系成分由(质量分数)CaO为50%~55%、SiO_(2)为10%~15%、Al_(2)O_(3)为20%~25%调整为CaO为45%~50%、SiO_(2)为5%~10%、Al_(2)O_(3)为33%~38%,真空自耗重熔熔速由4.2 kg/min提高至6 kg/min、熔滴时间由0.23 s提高至0.27 s,自耗电极洁净度得到较大的提升,自耗重熔过程熔速控制稳定,熔池液面非金属漂浮物得以去除,成品材高低倍检验均满足标准要求,探伤合格率提高至98%以上。 展开更多
关键词 15-5PH不锈钢 点状缺陷 精炼渣系 真空自耗重熔 熔滴时间
下载PDF
Hot Deformation Behavior of GCr15 Steel 被引量:1
12
作者 PENG Ning-qi TANG Guang-bo +1 位作者 YAO Jun LIU Zheng-dong 《Journal of Iron and Steel Research International》 SCIE EI CAS CSCD 2013年第3期50-56,共7页
Hot deformation behavior of GCr15(ASTM 52100) steel was investigated using single-hit compression tests on Gleeble-1500 simulator at the temperature range of 850-1 100 ℃ and strain rate range of 0.1-10 s-1.The flow... Hot deformation behavior of GCr15(ASTM 52100) steel was investigated using single-hit compression tests on Gleeble-1500 simulator at the temperature range of 850-1 100 ℃ and strain rate range of 0.1-10 s-1.The flow stress constitutive equation of GCr15 steel during hot deformation was determined by stress-strain curves analysis on the basis of the hyperbolic sine equation.And the models of dynamic recrystallization fraction and dynamic recrystallization grain size of GCr15 steel were established by the measured curves and microstructure observation in different experimental conditions.The mean activation energy and the time exponent of dynamic recrystallization kinetics equation in the range of experimental conditions were determined to be 356.2 kJ/mol and 2.12,respectively.Meanwhile,the flow stress model was also established by the method of allocating flow stress curve with three main stress values,the saturation stress,the steady state stress and the stress when strain is 0.1.The flow stress curves predicted by the developed models under different deformation conditions are in good agreements with the measured ones. 展开更多
关键词 GCr15 steel hot deformation flow stress dynamic recrystallization
原文传递
15-5PH不锈钢表面类石墨碳基多层膜结构设计及摩擦学行为
13
作者 李迎春 杨更生 +2 位作者 聂傲男 邱明 范恒华 《中国表面工程》 EI CAS CSCD 北大核心 2023年第5期142-155,共14页
针对马氏体沉淀硬化不锈钢15-5PH(0Cr15Ni5Cu4Nb)在海水环境中易腐蚀磨损的问题,采用直流磁控溅射的方法在15-5PH钢样片上制备调制周期分别为940、375和234nm的掺杂Cr的类石墨碳基多层膜(分别标记为Cr/GLC-S1、Cr/GLC-S2和Cr/GLC-S3),... 针对马氏体沉淀硬化不锈钢15-5PH(0Cr15Ni5Cu4Nb)在海水环境中易腐蚀磨损的问题,采用直流磁控溅射的方法在15-5PH钢样片上制备调制周期分别为940、375和234nm的掺杂Cr的类石墨碳基多层膜(分别标记为Cr/GLC-S1、Cr/GLC-S2和Cr/GLC-S3),采用扫描电子显微镜(SEM)、拉曼光谱仪(Raman)、MFT-5000多功能摩擦磨损试验机等仪器设备系统考察三种类石墨碳基多层薄膜的结构及摩擦学性能。研究结果表明:不同调制周期的类石墨多层膜表面均呈现“菜花状”形貌,随着调制周期的减小,“菜花状”颗粒逐渐减小,膜层变得致密;sp2键含量逐渐增大,石墨化程度加剧,机械性能更加优异。在干摩擦条件下,调制周期适中的Cr/GLC-S2薄膜具有良好的减摩耐磨性能,磨损形式以磨粒磨损为主,而调制周期较大的Cr/GLC-S1和调制周期较小的Cr/GLC-S3薄膜,在高载荷下均发生不同程度的脆性剥落,导致其摩擦学性能劣化。在人工海水环境中,Cr/GLC-S1和Cr/GLC-S2薄膜在中低载荷下的摩擦学性能较好,磨损形式仍以磨粒磨损为主,在高载荷下三种多层膜均发生不同程度的脆性剥落,特别是调制周期较小的Cr/GLC-S3薄膜已失效。针对不同的工况,设计合理的调制周期是提高GLC薄膜摩擦学性能的关键,结果可为类石墨碳基薄膜在海洋防护中的实际应用提供一定参考。 展开更多
关键词 磁控溅射 类石墨多层膜 调制周期 摩擦磨损 15-5PH不锈钢
下载PDF
Hot deformation behaviors and flow stress model of GCr15 bearing steel 被引量:6
14
作者 廖舒纶 张立文 +2 位作者 岳重祥 裴继斌 高惠菊 《Journal of Central South University of Technology》 EI 2008年第5期575-580,共6页
The hot deformation behaviors of GCr15 bearing steel were investigated by isothermal compression tests, performed on a Gleeble-3800 thermal-mechanical simulator at temperatures between 950 ℃ and 1 150 ℃ and strain r... The hot deformation behaviors of GCr15 bearing steel were investigated by isothermal compression tests, performed on a Gleeble-3800 thermal-mechanical simulator at temperatures between 950 ℃ and 1 150 ℃ and strain rates between 0.1 and 10 s-1. The peak stress and peak strain as functions of processing parameters were obtained. The dependence of peak stress on strain rate and temperature obeys a hyperbolic sine equation with a Zener-Hollomon parameter. By regression analysis, in the temperature range of 950-1 150 ℃ and strain rate range of 0.1?10 s?1, the mean activation energy and the stress exponent were determined to be 351kJ/mol and 4.728, respectively. Meanwhile, models of flow stress and dynamic recrystallization (DRX) grain size were also established. The model predictions show good agreement with experimental results. 展开更多
关键词 GCr15 bearing steel flow stress dynamic recystallization hot deformation
下载PDF
Alloying Effect of Lanthanum in GCr15 Bearing Steel with Tin and Antimony 被引量:1
15
作者 肖寄光 王福明 +1 位作者 李长荣 赵亚斌 《Journal of Rare Earths》 SCIE EI CAS CSCD 2007年第S2期278-282,共5页
Effect of tin and antimony on hot ductility of GCr15 bearing steel as well as interaction between lanthanum and tramp elements, were studied by simulator Gleeble-1500 and the fractures for the tested steels were analy... Effect of tin and antimony on hot ductility of GCr15 bearing steel as well as interaction between lanthanum and tramp elements, were studied by simulator Gleeble-1500 and the fractures for the tested steels were analyzed using SEM and EDS. The results show that with increasing contents of tin and antimony elements, the hot ductility of GCr15 bearing steel was decreased. Lanthanum can reduce the harmful effect of tramp elements on the hot ductility of GCr15, which can react with antimony to form compound and segregate at grain boundary in steel. Lanthanum can refine the recrystallized austenite grains after deformation and subsequent martensite structure. 展开更多
关键词 tramp element hot ductility GCr15 bearing steel rare Earth elements
下载PDF
15-5PH不锈钢在580℃时效过程中的析出强化行为 被引量:3
16
作者 肖亚姣 刘文庆 +1 位作者 孙光岩 孙梦菊 《上海金属》 CAS 2023年第4期38-44,共7页
对15-5PH不锈钢进行了1040℃×1 h水冷的固溶处理,随后于580℃时效不同时间。利用维氏硬度计、光学显微镜和原子探针层析技术(atom probe tomography,APT)研究了不锈钢时效过程中析出相演变规律及其对硬度的影响。结果表明:时效初期... 对15-5PH不锈钢进行了1040℃×1 h水冷的固溶处理,随后于580℃时效不同时间。利用维氏硬度计、光学显微镜和原子探针层析技术(atom probe tomography,APT)研究了不锈钢时效过程中析出相演变规律及其对硬度的影响。结果表明:时效初期,15-5PH不锈钢的硬度迅速上升并在时效5 min后达到峰值411.0 HV0.5,随后快速下降。时效5 min的钢中富Cu相的数量密度大,强化作用明显,硬度达到峰值。随着时效时间的延长,富Cu相逐渐粗化,强化作用减弱,硬度迅速下降。时效过程中Nb(C,N)颗粒与富Cu相分布在相邻位置,且随着时效时间的延长,铌碳氮化物不断析出长大,元素富集程度不断提高。 展开更多
关键词 15-5PH 不锈钢 时效 富Cu 原子探针层析技术 碳氮化物
下载PDF
基于响应曲面法的15-5PH不锈钢铣削参数优化研究 被引量:1
17
作者 史佳星 金成哲 高可 《制造技术与机床》 北大核心 2023年第7期43-47,共5页
由于15-5PH沉淀硬化不锈钢属于难加工材料,其加工时会产生较大切削力和极大的塑性变形。所以需要对其切削参数进行优化从而优化切削过程。文章以主轴转速、进给速度、轴向切深和径向切深为优化设计变量,以切削力、表面粗糙度和材料去除... 由于15-5PH沉淀硬化不锈钢属于难加工材料,其加工时会产生较大切削力和极大的塑性变形。所以需要对其切削参数进行优化从而优化切削过程。文章以主轴转速、进给速度、轴向切深和径向切深为优化设计变量,以切削力、表面粗糙度和材料去除率作为响应性能指标,设计曲面响应法方案,建立高速铣削沉淀硬化不锈钢的响应分析模型,分析并得到关于优化设计变量的响应函数解析式,研究了各优化设计变量的交互作用对优化目标的影响规律。得到高速铣削沉淀硬化不锈钢条件下降低切削力和粗糙度,提高切削效率的最优选择组合,为v_(c)=100 m/min,f_(z)=0.02 mm/z,a_(p)=1.5 mm,a_(e)=0.4 mm。 展开更多
关键词 曲面响应法 15-5PH不锈钢 高速铣削 参数优化
下载PDF
Analysis on SH-CCT curves of HD15Ni1MnMoNbCu steel for nuclear power station
18
作者 Zhang Jianlin Zhu Ping +3 位作者 Chen Zhongbing Zhang Fayun Huang Maotao Wang Gangang 《China Welding》 EI CAS 2016年第3期57-62,共6页
The microstructural evolution and Vickers hardness measurement in the welding heat-affected zone (HAZ) of HD15 Nil MnMoNbCu steel for nuclear power station were investigated by Gleeble-3180 thermal mechanical simula... The microstructural evolution and Vickers hardness measurement in the welding heat-affected zone (HAZ) of HD15 Nil MnMoNbCu steel for nuclear power station were investigated by Gleeble-3180 thermal mechanical simulator, and the simulated HAZ continuous cooling transformation curves (SH-CCT) were measured simultaneously. With ts/5 inereasing from 3.75 s to 15 000 s, the product was obtained martensite, bainite, ferrite and pearlite, successively. The result of microstructure and Vickers hardness in the heat-affected zone was in good agreement with those measured by SH-CCT diagram with the heat input 16. 2 kJ/cm as an example to weld the HD15Ni1MnMoNbCu steel pipe using TIG/SMAW/SAW welding methods. 展开更多
关键词 HD15Ni1 MnMoNbCu steel SH-CCT diagram coarse-grained heat-affected zone Gleeble physical simulation
下载PDF
热处理工艺对GCr15钢碳化物球化效果的影响 被引量:8
19
作者 方琴 张崇才 +1 位作者 陈庚 曾波 《热加工工艺》 CSCD 北大核心 2012年第12期159-162,共4页
分别采用常规球化退火、循环球化退火和1050℃高温固溶+700℃高温回火三种不同的预热处理工艺处理后,再用840℃淬火+150℃回火工艺处理了GCr15钢试样,研究了经上述三种工艺处理后GCr15钢试样的金相组织和硬度,分析了实验结果和球化机理... 分别采用常规球化退火、循环球化退火和1050℃高温固溶+700℃高温回火三种不同的预热处理工艺处理后,再用840℃淬火+150℃回火工艺处理了GCr15钢试样,研究了经上述三种工艺处理后GCr15钢试样的金相组织和硬度,分析了实验结果和球化机理。结果表明:GCr15钢试样经1050℃高温固溶+700℃高温回火+840℃淬火+150℃回火的热处理工艺,具有工艺过程简便、可操作性较强、生产周期较短、能耗较低和强韧性较好的特点,其热处理后的金相组织为回火马氏体+细小、圆整、比较均匀弥散分布的碳化物。 展开更多
关键词 GCR15 强韧性 球化退火
下载PDF
15-5PH马氏体时效钢的工艺性能 被引量:23
20
作者 李伟 杜楠 樊兆宝 《兵器材料科学与工程》 CAS CSCD 2010年第1期78-81,共4页
研究15-5PH钢482~621℃时效处理时尺寸变化率,焊接系数和冷却介质对固溶和时效硬度的影响。482℃时效处理时尺寸变化率在万分之十一以内,焊接系数0.969,固溶处理后水冷、油冷、空冷3种处理方式中,水冷固溶状态的硬度最低而时效后的硬... 研究15-5PH钢482~621℃时效处理时尺寸变化率,焊接系数和冷却介质对固溶和时效硬度的影响。482℃时效处理时尺寸变化率在万分之十一以内,焊接系数0.969,固溶处理后水冷、油冷、空冷3种处理方式中,水冷固溶状态的硬度最低而时效后的硬度最高,空冷固溶状态的硬度最高而时效后的硬度最低。 展开更多
关键词 15-5PH钢 时效 固溶 尺寸变化率
下载PDF
上一页 1 2 7 下一页 到第
使用帮助 返回顶部