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新技术在钛粉末冶金中的应用 被引量:1
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作者 廖际常 姚丽 《钛工业进展》 CAS 2000年第4期29-34,共6页
关键词 钛粉末冶金 等静压 活化烧结 机械合金化
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低成本生产钛粉及钛粉末冶金制品途径的探索 被引量:2
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作者 孙世杰 《粉末冶金工业》 CAS 北大核心 2005年第4期28-28,共1页
关键词 钛粉末冶金制品 气雾化法 制作方法 生产成本 压制密度
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钛粉末冶金制品在人工骨制造领域的探索
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作者 孙世杰 《粉末冶金工业》 CAS 北大核心 2005年第4期16-16,共1页
关键词 钛粉末冶金制品 人工骨 生物组织 兼容性 强度 磁共振性能 力学性能
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我国钛粉末冶金技术和市场近年来的发展 被引量:1
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作者 梁振锋 陈平 《金属学报》 SCIE EI CAS CSCD 北大核心 2002年第z1期30-32,共3页
本文概要地叙述了近几年来我国钛粉末冶金技术和工艺方面的研究工作进展,并与国外的一些成果进行了比较,对其应用市场情况进行了分析和介绍.
关键词 粉末冶金 应用市场
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钛粉末及其粉末冶金制品的发展现状 被引量:15
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作者 吴引江 梁永仁 《中国材料进展》 CAS CSCD 2011年第6期44-50,63,共7页
简要介绍了钛粉末的不同制备技术及特点。详述了钛粉末冶金制品的主要成形技术和产品的生产现状和趋势。对近年来研究和产业领域都很关注的球形钛粉末的制备技术进行了概括,指出适合工业化推广应用的技术发展方向。并对钛粉末冶金制品... 简要介绍了钛粉末的不同制备技术及特点。详述了钛粉末冶金制品的主要成形技术和产品的生产现状和趋势。对近年来研究和产业领域都很关注的球形钛粉末的制备技术进行了概括,指出适合工业化推广应用的技术发展方向。并对钛粉末冶金制品新的制备技术及其在汽车工业、医疗及生物等方面的应用研究作了总结。最后针对国内粉末冶金钛合金的市场发展和需求,讨论分析了国内钛粉末及其粉末冶金制品的研究热点、新的应用领域及今后所需解决的问题。 展开更多
关键词 粉末 制备方法 钛粉末冶金制品
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粉末冶金钛合金致密化研究的进展 被引量:32
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作者 汤慧萍 黄伯云 +1 位作者 刘咏 欧阳洪武 《稀有金属材料与工程》 SCIE EI CAS CSCD 北大核心 2003年第9期677-680,共4页
综述了粉末冶金钛合金致密化工艺及致密化机理研究的新进展。粉末冶金钛合金致密化工艺除采用传统的热等静压工艺外,注射成型、激光成型等新技术的应用可以得到相对密度达99%的烧结件,其拉伸性能达到甚至超过熔锻钛合金的水平;致密化理... 综述了粉末冶金钛合金致密化工艺及致密化机理研究的新进展。粉末冶金钛合金致密化工艺除采用传统的热等静压工艺外,注射成型、激光成型等新技术的应用可以得到相对密度达99%的烧结件,其拉伸性能达到甚至超过熔锻钛合金的水平;致密化理论方面的研究除扩散、蠕变及屈服机制外,钛合金中还有相变致密化机制与多组元合金元素的强化致密化机制。其中当粉末钛合金在α/β两相区温度下进行循环热压时,相变致密化起主要作用。当多组元粉末钛合金烧结时,促进液相形成或提供扩散通道的合金元素起强化致密化作用。这两种致密化机制在粉末钛合金烧结的实际应用中有重要意义。 展开更多
关键词 粉末冶金合金 致密化 评述
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粉末冶金法多弧离子镀(PVD)用钛靶材的制备
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作者 陈平 李华 +2 位作者 梁振锋 赵峰 苏东艺 《金属学报》 SCIE EI CAS CSCD 北大核心 2002年第z1期594-595,共2页
概要介绍了用粉末冶金工艺制备磁控溅射沉积TiN膜用钛靶的方法,探讨了其技术、经济可行性.结果表明,该方法制备钛靶是可行的,并可推广应用于其它钛复合靶、钛合金、钛化合物靶制备.
关键词 磁控溅射 粉末冶金
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TiH_(2)粉末制备钛合金的组织与力学性能 被引量:3
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作者 陈奏君 林泽华 +2 位作者 段中元 祝贤智 周承商 《粉末冶金材料科学与工程》 2021年第3期243-249,256,共8页
以TiH_(2)粉末为原料,分别在1100、1150和1200℃进行真空烧结,制备粉末冶金纯Ti以及Ti-6Al-4V与Ti-5Al-2.5Fe合金,研究烧结温度对合金密度、微观组织和力学性能的影响。结果表明:随烧结温度升高,钛和钛合金的密度均逐渐提高,拉伸性能明... 以TiH_(2)粉末为原料,分别在1100、1150和1200℃进行真空烧结,制备粉末冶金纯Ti以及Ti-6Al-4V与Ti-5Al-2.5Fe合金,研究烧结温度对合金密度、微观组织和力学性能的影响。结果表明:随烧结温度升高,钛和钛合金的密度均逐渐提高,拉伸性能明显提升。在1200℃真空烧结后,纯Ti的相对密度达98.1%,抗拉强度和伸长率分别为501 MPa和11.3%;Ti-6Al-4V的相对密度为96.2%,抗拉强度和伸长率分别为968 MPa和8.1%;Ti-5Al-2.5Fe的相对密度为96.2%,抗拉强度和伸长率分别为867 MPa和6.7%。这3种材料的拉伸断口均出现大量韧窝,为韧性断裂的断口特征。以TiH_(2)粉末为原料制备的钛合金强度和伸长率均达到钛合金的标准性能要求。 展开更多
关键词 TiH_(2) 粉末冶金合金 烧结温度 显微组织 力学性能
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世界海绵钛工业的现状及对我国未来发展的思考 被引量:6
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作者 和平志 黄淑梅 +2 位作者 郭薇 王运锋 何蕾 《钛工业进展》 北大核心 2017年第4期1-4,共4页
介绍了目前世界海绵钛工业的现状,分析了传统的克劳尔法存在着生产工艺复杂、流程长、能耗高、效率低等特点。指出随着国内外钛及钛合金粉末制备技术的发展和成熟,粉末冶金作为钛及钛合金近净成形的手段之一,必将成为降低钛及钛合金成... 介绍了目前世界海绵钛工业的现状,分析了传统的克劳尔法存在着生产工艺复杂、流程长、能耗高、效率低等特点。指出随着国内外钛及钛合金粉末制备技术的发展和成熟,粉末冶金作为钛及钛合金近净成形的手段之一,必将成为降低钛及钛合金成形件成本的重要方法。建议我国新建和扩建传统克劳尔法制取海绵钛项目应谨慎,要积极跟进金属钛提取新技术,加强钛及钛合金粉末成形工艺和成形设备的研究,使我国钛的提取技术和粉末冶金成形技术能够紧跟世界先进水平。 展开更多
关键词 海绵 克劳尔法 提取新技术 合金粉末冶金
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粉末冶金TC4钛合金热压缩动态软化行为分析 被引量:3
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作者 刘荣娥 王宝雨 +1 位作者 冯鹏妮 胡树山 《稀有金属材料与工程》 SCIE EI CAS CSCD 北大核心 2021年第7期2447-2454,共8页
对粉末冶金TC4钛合金在温度为850~950℃,应变速率为0.1~10 s^(-1)范围内进行热模拟压缩实验获得了应力-应变曲线,建立了材料本构方程,描述了粉末冶金TC4钛合金的流变行为。进一步对动态软化行为进行了分析,并计算了各种因素对软化的影... 对粉末冶金TC4钛合金在温度为850~950℃,应变速率为0.1~10 s^(-1)范围内进行热模拟压缩实验获得了应力-应变曲线,建立了材料本构方程,描述了粉末冶金TC4钛合金的流变行为。进一步对动态软化行为进行了分析,并计算了各种因素对软化的影响程度。结果表明:变形温度越低,应变速率越小,流动软化程度越大;在应变速率为1和10s^(-1)时,主要是变形热导致流动软化;当应变速率为0.1 s^(-1),温度为850和900℃时,有变形热、动态相变和α相形态演化3种软化因素,且温度越低,α相形态演化导致的软化占比越大,温度增加,动态相变软化所占比例增加;当应变速率为0.1s^(-1),变形温度为950℃时,有变形热和动态相变2种软化因素,随着变形量增加,动态相变软化所占比例增大。 展开更多
关键词 粉末冶金TC4合金 动态软化 变形热 动态相变 α相形态演化
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TiH_2粉末制备钛合金的烧结脱氢规律及工艺 被引量:10
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作者 张家敏 易健宏 +6 位作者 雷霆 房志刚 甘国友 严继康 杜景红 方树铭 王洪涛 《科技导报》 CAS CSCD 北大核心 2012年第1期65-68,共4页
以TiH2粉末为原料,通过压制成型和烧结工艺制备粉末钛合金,不同于传统钛粉末冶金方法。通过热分析和热膨胀技术研究不同球磨粒度TiH2粉末的脱氢和收缩规律,以此入手研究了TiH2粉末压坯和TiH2-Al-V粉末压坯的烧结致密特性,以及影响烧结... 以TiH2粉末为原料,通过压制成型和烧结工艺制备粉末钛合金,不同于传统钛粉末冶金方法。通过热分析和热膨胀技术研究不同球磨粒度TiH2粉末的脱氢和收缩规律,以此入手研究了TiH2粉末压坯和TiH2-Al-V粉末压坯的烧结致密特性,以及影响烧结过程的主要工艺因素,包括烧结温度、烧结时间、升温速率、压坯密度、压坯成型方式、合金体系,并对烧结组织进行了分析。结果表明,TiH2粉末球磨后脱氢温度降低,粉末越细,开始温度越低。TiH2粉末压坯在烧结过程中脱氢后获得新鲜钛,其易发生黏接并引起α-Ti的强烈收缩,这时烧结体很容易致密,并获得相对密度大于99%坯体;相比之下,TiH2-Al-V粉末压坯烧结时因为合金元素的溶解,不如纯TiH2粉末压坯的烧结容易致密。TiH2-Al-V粉末经过成型、烧结脱氢可获得典型的层片状α+β钛合金组织,合金元素分布均匀。 展开更多
关键词 钛粉末冶金 TiH2粉末 脱氢 烧结 工艺 显微组织
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Mo对P/MTi-Mo合金烧结致密化和力学性能的影响 被引量:10
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作者 汤慧萍 刘海彦 +2 位作者 黄原平 刘咏 黄伯云 《稀有金属材料与工程》 SCIE EI CAS CSCD 北大核心 2006年第12期1932-1935,共4页
研究了P/MTi-Mo合金中Mo对烧结致密化及力学性能的影响。用热膨胀仪分析了其收缩/膨胀特性,用扫描电镜及力学性能检测等分析手段研究了显微组织和力学性能。结果表明,Mo的添加不利于P/MTi-Mo合金的烧结致密化,但有利于Ti-Mo合金的显微... 研究了P/MTi-Mo合金中Mo对烧结致密化及力学性能的影响。用热膨胀仪分析了其收缩/膨胀特性,用扫描电镜及力学性能检测等分析手段研究了显微组织和力学性能。结果表明,Mo的添加不利于P/MTi-Mo合金的烧结致密化,但有利于Ti-Mo合金的显微组织细化。随着Mo含量的增加,组织细化作用更加明显。该晶粒细化作用大大改善了合金的室温塑性,使烧结态Ti-Mo合金的延伸率达到23%。 展开更多
关键词 粉末冶金合金 烧结致密化 力学性能
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Effect of sintering processing on property of porous Ti using space holder technique 被引量:2
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作者 李伯琼 李志强 陆兴 《Transactions of Nonferrous Metals Society of China》 SCIE EI CAS CSCD 2015年第9期2965-2973,共9页
Porous Ti for the application in clinic orthopaedics field was manufactured by powder metallurgy technique using polymethyl methacrylate as the space holder under different sintering conditions.The final morphological... Porous Ti for the application in clinic orthopaedics field was manufactured by powder metallurgy technique using polymethyl methacrylate as the space holder under different sintering conditions.The final morphological features and mechanical properties were described.The results show that the increase of sintering temperature and time leads to improved grain size of porous Ti ligament and decreased pore size,with a concomitant increase of tensile strength and elastic modulus.The microstructure and mechanical properties of solid Ti depend more on the sintering temperature and time than those of porous Ti.The relative contributions of these mechanisms of porous Ti vary with the initial microstructure and oxygen content. 展开更多
关键词 porous Ti powder metallurgy microstructure mechanical property
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Flow behavior and processing map of PM Ti-47Al-2Cr-0.2Mo alloy 被引量:3
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作者 李慧中 曾敏 +2 位作者 梁霄鹏 李洲 刘咏 《Transactions of Nonferrous Metals Society of China》 SCIE EI CAS CSCD 2012年第4期754-760,共7页
The flow stress features of PM Ti-47Al-2Cr-0.2Mo alloy were studied by isothermal compression in the temperature range from 1000 to 1150 °C with strain rates of 0.001-1 s-1 on Gleeble-1500 thermo-simulation machi... The flow stress features of PM Ti-47Al-2Cr-0.2Mo alloy were studied by isothermal compression in the temperature range from 1000 to 1150 °C with strain rates of 0.001-1 s-1 on Gleeble-1500 thermo-simulation machine.The results show that the deformation temperature and strain rate have obvious effects on the flow characteristic,and the flow stress increases with increasing strain rate and decreasing temperature.The processing maps under different deformation conditions were established.The processing maps of this alloy are sensitive to strains.The processing map at the strain of 0.5 exhibits two suitable deformation domains of 1000-1050 °C at 0.001-0.05 s-1 and 1050-1125 °C at 0.01-0.1 s-1.The optimum parameters for hot working of the alloy are deformation temperature of 1000 °C and strain rate of 0.001 s-1 according to the processing map and microstructure at true strain of 0.5. 展开更多
关键词 powder metallurgy TiAl based alloy hot compression deformation processing map
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Microstructure and mechanical properties of powder metallurgy Ti-Al-Mo-V-Ag alloy
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作者 肖代红 袁铁锤 +1 位作者 欧小琴 贺跃辉 《Transactions of Nonferrous Metals Society of China》 SCIE EI CAS CSCD 2011年第6期1269-1276,共8页
The Ti-Al-Mo-V-Ag α+β alloys were processed by powder metallurgy(PM) using the blended elemental(BE) technique.The effects of Ag addition and sintering temperature on microstructure and properties of the Ti-5Al... The Ti-Al-Mo-V-Ag α+β alloys were processed by powder metallurgy(PM) using the blended elemental(BE) technique.The effects of Ag addition and sintering temperature on microstructure and properties of the Ti-5Al-4Mo-4V alloys were investigated using X-ray diffraction,optical microscope,scanning electron microscope and mechanical properties tests.The results show that adding Ag element increases the relative density and improves the mechanical properties of PM Ti-5Al-4Mo-4V alloy.After sintering at 1 250 ℃ for 4 h,the relative density and compression strength of Ti-5Al-4Mo-4V-5Ag alloy are 96.3% and 1 656 MPa,respectively. 展开更多
关键词 titanium alloys powder metallurgy(PM) AG microstructure mechanical properties
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Influence of rutile(TiO_2) content on wear and microhardness characteristics of aluminium-based hybrid composites synthesized by powder metallurgy 被引量:2
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作者 C.ANTONY VASANTHA KUMAR J.SELWIN RAJADURAI 《Transactions of Nonferrous Metals Society of China》 SCIE EI CAS CSCD 2016年第1期63-73,共11页
The effect of rutile(TiO_2) content on the wear and microhardness properties of aluminium(Al)-based hybrid composites was explored. The proposed content of TiO_2(0, 4%, 8%, 12%, mass fraction) was blended to Al-... The effect of rutile(TiO_2) content on the wear and microhardness properties of aluminium(Al)-based hybrid composites was explored. The proposed content of TiO_2(0, 4%, 8%, 12%, mass fraction) was blended to Al-15% SiC composites through powder metallurgy(P/M) process. Wear test was conducted using pin-on-disc apparatus under dry sliding conditions. Fabricated preforms were characterized using X-ray diffractometer(XRD), scanning electron microscope(SEM) and energy-dispersive X-ray spectrometer(EDS). Optical micrographs of the composite preforms display uniform distribution of TiO_2 throughout the matrix. Quantitative results indicate that wear resistance and microhardness increase with the increase of TiO_2 content. SEM images unveil that high wear resistance is attributed to high dislocation density of deformed planes and high hardness of TiO_2. SEM images of wear debris display gradual reduction in mean size of debris when TiO_2 content increases. EDS spectra confirm the presence of oxide layer which obviously reduces the effective area of contact between the sliding surfaces thereby lowers the wear loss of composites. The observation concludes that delamination and adhesive wear are the predominant mechanisms. 展开更多
关键词 aluminium metal-matrix composite RUTILE powder metallurgy sliding wear
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Production and mechanical properties of nano SiC particle reinforced Ti-6Al-4V matrix composite 被引量:4
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作者 G.SIVAKUMAR V.ANANTHI S.RAMANATHAN 《Transactions of Nonferrous Metals Society of China》 SCIE EI CAS CSCD 2017年第1期82-90,共9页
Different mass fractions (0, 5%, 10%, and 15%) of the synthesized nano SiC particles reinforced Ti-6Al-4V (Ti64) alloy metal matrix composites (MMCs) were successfully fabricated by the powder metallurgy method.... Different mass fractions (0, 5%, 10%, and 15%) of the synthesized nano SiC particles reinforced Ti-6Al-4V (Ti64) alloy metal matrix composites (MMCs) were successfully fabricated by the powder metallurgy method. The effects of addition of SiC particle on the mechanical properties of the composites such as hardness and compressive strength were investigated. The optimum density (93.33%) was obtained at the compaction pressure of 6.035 MPa. Scanning electron microscopic (SEM) observations of the microstructures revealed that the wettability and the bonding force were improved in Ti64 alloy/5% nano SiCp composites. The effect of nano SiCp content in Ti64 alloy/SiCp matrix composite on phase formation was investigated by X-ray diffraction. The correlation between mechanical parameter and phase formation was analyzed. The new phase of brittle interfaced reaction formed in the 10% and 15% SiCp composite specimens and resulted in no beneficial effect on the strength and hardness. The compressive strength and hardness of Ti64 alloy/5% nano SiCp MMCs showed higher values. Hence, 5% SiCp can be considered to be the optimal replacement content for the composite. 展开更多
关键词 titanium alloy nano SiC particle powder metallurgy HARDNESS compressive strength
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Microstructures and mechanical properties of Al 2519 matrix composites reinforced with Ti-coated SiC particles 被引量:8
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作者 Cui-ge DONG Rui CUI +2 位作者 Ri-chu WANG Chao-qun PENG Zhi-yong CAI 《Transactions of Nonferrous Metals Society of China》 SCIE EI CAS CSCD 2020年第4期863-871,共9页
Ti-coated SiCp particles were developed by vacuum evaporation with Ti to improve the interfacial bonding of SiCp/Al composites.Ti-coated SiC particles and uncoated SiC particles reinforced Al 2519 matrix composites we... Ti-coated SiCp particles were developed by vacuum evaporation with Ti to improve the interfacial bonding of SiCp/Al composites.Ti-coated SiC particles and uncoated SiC particles reinforced Al 2519 matrix composites were prepared by hot pressing,hot extrusion and heat treatment.The influence of Ti coating on microstructure and mechanical properties of the composites was analyzed by scanning electron microscopy(SEM)and energy dispersive spectroscopy(EDS).The results show that the densely deposited Ti coating reacts with SiC particles to form TiC and Ti5Si3 phases at the interface.Ti-coated SiC particle reinforced composite exhibits uniformity and compactness compared to the composite reinforced with uncoated SiC particles.The microstructure,relative density and mechanical properties of the composite are significantly improved.When the volume fraction is 15%,the hardness,fracture strain and tensile strength of the SiCp reinforced Al 2519 composite after Ti plating are optimized,which are HB 138.5,4.02%and 455 MPa,respectively. 展开更多
关键词 Al 2519 matrix composites surface modification Ti-coated SiCp powder metallurgy interfacial microstructure mechanical properties
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Hot compressive deformation behavior of an in-situ TiB whisker reinforced Ti matrix composite
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作者 张杰 郭永良 《Journal of Harbin Institute of Technology(New Series)》 EI CAS 2004年第3期245-249,共5页
An in-situ TiB whisker reinforced Ti matrix (TiBw/Ti) composite is fabricated by powder metallurgy technique followed by hot extrusion. Hot compressive deformation behavior of the composite, in which the TiB whiskers ... An in-situ TiB whisker reinforced Ti matrix (TiBw/Ti) composite is fabricated by powder metallurgy technique followed by hot extrusion. Hot compressive deformation behavior of the composite, in which the TiB whiskers were oriented along the extruded direction, is investigated. The results indicate that the hot compressive resistance of the TiBw/Ti composite is higher than that of the unreinforced Ti, and hot compressive resistance of the composite in the direction parallel to the whisker orientation is higher than that in the direction perpendicular to the whisker orientation. The hot compressive resistance of the composite increases with increasing strain rate and decreasing temperature. With increasing test temperature, the rate of the decrement of the compressive flow stress of the composite is higher than that of the unreinforced Ti. With increasing amount of compressive deformation, more and more TiB whiskers rotate and break during deformation. The rotation of the whiskers is easier at higher temperature, while, at lower temperature it becomes more difficult and whisker breakage becomes much more serious. 展开更多
关键词 METALS composite materials powder metallurgy thermal properties
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Microstructural evolution in a powder metallurgical Ti-7Mo alloy with continuous oxygen gradient 被引量:1
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作者 陈智星 刘彬 +2 位作者 刘咏 曾凡沛 卢金忠 《Journal of Central South University》 SCIE EI CAS CSCD 2016年第3期508-514,共7页
A titanium alloy containing continuous oxygen gradient was prepared by powder metallurgy(P/M) and the composition–property relationship was studied on a single sample. The alloy was sintered with layered powder of di... A titanium alloy containing continuous oxygen gradient was prepared by powder metallurgy(P/M) and the composition–property relationship was studied on a single sample. The alloy was sintered with layered powder of different oxygen contents via vacuum sintering and spark plasma sintering(SPS), respectively. After subsequent heat treatments, high-throughput characterizations of the microstructures and mechanical properties by localized measurements were conducted. The Ti-7% Mo(molar fraction) alloy with an oxygen content ranging from 1.3×10^(-3) to 6.2×10^(-5)(mass fraction) was obtained, and the effects of oxygen on the microstructural evolution and mechanical properties were studied. The results show that SPS is an effective way for fabricating fully dense Ti alloy with a compositional gradient. The average width of α′ phase coarsens with the increase of the content of oxygen. The content of α″ martensitic phase also increases with the content of oxygen. At oxygen contents of 3×10^(-3) and 4×10^(-3)(mass fraction), the Ti alloys present the lowest microhardness and the lowest elastic modulus, respectively. The results also indicate that the martensitic phases actually decrease the hardness of Ti-7Mo alloy, and oxygen effectively hardens the alloy by solid solution strengthening. Therefore, the high-throughput characterization on a microstructure with a gradient content of oxygen is an effective method for rapidly evaluating the composition–property relationship of titanium alloys. 展开更多
关键词 titanium alloys oxygen martensitic transformation high-throughput method powder metallurgy (P/M) mechanical properties
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