徐高磊,彭丽军,米绪军,解浩峰,黄国杰,杨振,冯雪,尹向前,刘冬梅.上引-连续挤压法制备Cu-Cr-Ag合金组织性能的研究[J].稀有金属材料与工程,2019,48(4):1310~1316.[XuGaolei,PengLijun,Mixujun,XIEHaofemh,Huangguojie,yangzhen,Fengxue,Yinxiangqiang,LiuDongmei.Microstructure and Properties of Cu-Cr-Ag alloy fabricated by up-drawn continuous casting and continuous extrusion[J].Rare Metal Materials and Engineering,2019,48(4):1310~1316.]
上引-连续挤压法制备Cu-Cr-Ag合金组织性能的研究
投稿时间:2017-12-17  修订日期:2018-02-02
中文关键词:  Cu-Cr-Ag 合金  上引-连续挤压  时效处理  微观组织  物理性能
基金项目:国家重点研发计划项目(2016YFB0301400),国家自然科学基金(项目号:51601017和51401026)
中文摘要:
      本文采用扫描电子显微镜(SEM)、透射电子显微镜(TEM)等分析测试手段系统研究不同热处理工艺制度对上引-连续挤压法制备Cu-Cr-Ag合金微观组织性能的影响规律。试验结果表明,上引连铸Cu-Cr-Ag合金棒坯经连续挤压过程中合金发生了强烈的剪切变形,晶粒破粹明显,其晶粒平均尺寸为4~5μm。挤压后合金经60%变形,875℃×1h固溶处理,60%变形,450℃不同时效处理后,其维氏硬度与时效时间的关系呈先下降后上升再下降的趋势,而导电率与时效时间的关系呈先快速上升后缓慢增加最后趋于稳定的趋势。析出相的析出序列为过饱和固溶体→G.P 区→f.c.c Cr相→有序化→b.c.c Cr相,且b.c.c Cr相与基体的取向关系呈N-W关系。
Microstructure and Properties of Cu-Cr-Ag alloy fabricated by up-drawn continuous casting and continuous extrusion
英文关键词:Cu-Cr-Ag alloy  Up-drawn continuous casting and continuous extrusion  Aging treatment  Microstructure  Physical properties
英文摘要:
      Effect of aging treatment on microstructure and properties of Cu-Cr-Ag alloy fabricated by up-drawn continuous casting and continuous extrusion are investigated by scanning electron microscopy (SEM) and transmission electron microscopy (TEM). The results show that the grains were refined significantly, with an average size of 4~5 μm, when the cast rob was processed during the continuous extrusion. The relation curve between Vickers hardness and aging time firstly rapid decrease, then quickly raise, finally slowly decrease and the electrical conductivity firstly rapid increase, then slowly raise, finally trended to stable as the aging time rise, when the Cu-Cr-Ag alloy was solutioned at 875℃ for 1h, 60% cold deformation and aged at 450℃ for different time, respectively. The precipitation sequence of Cu-Cr-Ag alloy aged at 450 ℃ is supersaturated solid sloution→G.P zones→fcc Cr phase→order fcc Cr phase→bcc Cr phase. The orientation relationship between bcc Cr precipitates and the matrix exhibit NW-OR
作者单位E-mail
徐高磊 北京有色金属研究总院 xugaolei@126.com 
彭丽军 北京有色金属研究总院  
米绪军 北京有色金属研究总院  
解浩峰 北京有色金属研究总院  
黄国杰 北京有色金属研究总院  
杨振 北京有色金属研究总院  
冯雪 北京有色金属研究总院  
尹向前 北京有色金属研究总院  
刘冬梅 北京有色金属研究总院  
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