弥散强化Pt-10Rh合金高温微观组织结构研究
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摘要
用金相显微镜、扫描电镜观测普通Pt-10Rh合金和弥散强化Pt-10Rh合金的微观组织结构,结果表明,普通Pt-10Rh合金在高温下晶粒长大趋势明显,且高温持久性低,而弥散强化Pt-10Rh合金中有强化颗粒氧化锆的存在,能减少晶界缺陷,提高晶界结合力,降低晶界的扩散速度,减缓位错攀移,有效阻止晶粒长大和晶界的滑移,从而提高材料的强度和使用寿命。
The microstructure of Pt-10 Rh alloys and dispersion-strengthened Pt-10 Rh alloys were observed by metallographic microscope and SEM. The results show that the grain sizes of Pt-10 Rh alloys grew heavily and they had low high temperature sustaining strength. But dispersion-strengthened Pt-10 Rh alloys had distributed strengthened zirconia particles, which could reduce the defect of grain boundary, improve the bonding strength of grain boundary, reduce the diffusion rate of grain boundary, slow down dislocation climbing, and effectively prevent grain growth and grain boundary sliding, thus improving the strength and service life of the material.
The microstructure of Pt-10 Rh alloys and dispersion-strengthened Pt-10 Rh alloys were observed by metallographic microscope and SEM. The results show that the grain sizes of Pt-10 Rh alloys grew heavily and they had low high temperature sustaining strength. But dispersion-strengthened Pt-10 Rh alloys had distributed strengthened zirconia particles, which could reduce the defect of grain boundary, improve the bonding strength of grain boundary, reduce the diffusion rate of grain boundary, slow down dislocation climbing, and effectively prevent grain growth and grain boundary sliding, thus improving the strength and service life of the material.
引文
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[2] 贵金属编写组.贵金属材料加工手册[M].北京:冶金工业出版社,1976.
[3] Su Zhonghua,Peng Xiaodong,Xie Weidong,et al.High temperature performance of dispersion strengthened Pt-3Rh alloy[J].Rare Metal Materials and Engineering,2012,41(3):402-405(in Chinese).苏中华,彭晓东,谢卫东,等.弥散强化Pt-3Rh合金高温性能[J].稀有金属材料与功能,2012,41(3):402-405.
[4] Zhang Suolin.Dispersion strengthened platinum and its production technology[J].China Resources Comprehensive Utilization,2017,35(4):104-107(in Chinese).张索林.弥散强化铂及其制品生产工艺技术研究[J].中国资源综合利用,2017,35(4):104-107.
[5] Zhang Suolin.Reinforcement technology of platinum and its application[J].China Resources Com prehensive Utilization,2017,35(9):85-90(in Chinese).张索林.铂材料强化技术及应用[J].中国资源综合利用,2017,35(9):85-90.
[6] Zhang Jiming,Geng Yonghong,Chen Song,et al.Current research and application status of dispersion-strengthened platinum-based composite materials[J].Precious Metals,2010,31(1):63-69(in Chinese).张吉明,耿永红,陈松等.弥散强化铂基复合材料的研究与应用现状[J].贵金属,2010,31(1):63-69.
[7] Kang Feifei,Zhang Kunhua,Guan Weiming,et al.Effect of dispersion—strengthened phase on high temperature creep property of Ptlr5 alloy[J].Rare Metal Materials and Engineering,2012,41(2):241-245(in Chinese).康菲菲,张昆华,管伟明,等.弥散强化相对PtIr5合金高温蠕变性能的影响[J].稀有金属材料与工程,2012,41(2):241-245.
[8] Zhang Jiming,Geng Yonghong,Cheng Song,et al.Current research status of dispersion-strengthened platinum-based materials[J].Materials Review,2009,23(2):58-70(in Chinese).张吉明,耿永红,陈松,等.弥散强化铂基材料的研究现状[J].材料导报,2009,23(2):58-70.
[9] 唐会毅,万伟建,罗维凡,等.一种用于铂铑基器皿的弥散强化型材料及其制备方法和应用:201711134031.6[P].2018-06-12.
[10] Yu D,Quan Y M,Wei T L,et al.Effect of Zr on microstructure and mechanical property of dispersion-strengthened Pt-20Rh[J].Materials Science and Technology,2018,34(6):654-659.
[11] Shu Xugang,He Xiangzhu,Huang Huimin,et al.Development in applied of nano-ZrO2 powder in composite plating[J].Materials for Mechanical Engineering,2008,32(3):1-4(in Chinese).舒绪刚,何湘柱,黄慧民,等.纳米ZrO2在复合镀中的应用[J].机械工程材料,2008,32(3):1-4.
[12] Tang Huiyi,Wu Baoan,Liu Qingbin,et al.Effect of the microstructure and properties of zirconia strengthened platinum materials[J] .China Metal Bulletin,2015(S1):23-25(in Chinese).唐会毅,吴保安,刘庆宾,等.Pt-ZrO2的显微组织与性能影响[J].中国金属通报,2015(S1):23-25.
[13] Kang F F,Geng Y H,Chen S,et al.Investigation of internal oxidation on Pt-lr-Zr high temperature alloy[J].Rare Metal Materials and Engineering,2011,40(4):0585-0589.
[14] Zhang J M,Geng Y H,Chen S,et al.The high temperature creep behavior of dispersion strengthened Pt5Rh composite[J].Rare Metal Materials and Engineering,2011,40(10):1713-1717.
[15] Yang Zonglun,Liu Weiyan,Sun Jianlin.Study on the microstructure of dispersion-strengthened Pt-3wt%Rh alloy[J].Precious Metals,2010,31(2):32-36(in Chinese).杨宗伦,刘伟延,孙建林.弥散强化Pt-3Rh合金的微观组织结构研究[J].贵金属,2010,31(2):32-36.