班宜杰,张毅,田保红,董轮涛,柴哲,王冰洁,耿永锋,刘勇

• 1:河南科技大学材料科学与工程学院
• 2:有色金属共性技术河南省协同创新中心
• 3:河南省有色金属材料科学与加工技术重点实验室

摘要(Abstract)：

采用Gleeble-1500D数控动态-力学模拟试验机,对Cu-0. 8Cr-0. 3Zr-0. 2Mg合金在550～900℃温度范围和0. 001～10 s~(-1)应变速率条件下进行了热变形试验,绘制了其真应力-真应变曲线,利用光学显微镜分析了其在热变形过程中的组织演变。绘制了合金的热加工图,找出热变形过程中最适宜的热加工参数。结果表明:合金的流变应力随温度的降低和应变速率的提高而增大;在热变形过程中,合金组织的演变对温度和应变速率有很高的敏感性,高温低应变速率有利于促进动态再结晶的发生;Cu-0. 8Cr-0. 3Zr-0. 2Mg合金适宜的热加工参数范围为:变形温度为850～900℃,应变速率为0. 01～0. 07 s~(-1)。

关键词(KeyWords)： Cu-0.8Cr-0.3Zr-0.2Mg合金;动态再结晶;热压缩变形;热加工图

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金(U1704143);; 河南省高校科技创新人才支持计划(18HASTIT024)

作者(Author): 班宜杰,张毅,田保红,董轮涛,柴哲,王冰洁,耿永锋,刘勇

DOI: 10.13289/j.issn.1009-6264.2019-0107

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