张志阳,周孟,张毅,唐顺龙,田保红,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)：

通过真空熔炼制备了Cu-1Ti-1Ni-0.1Mg合金，采用Gleeble-1500D数控动态-力学模拟试验机，在0.001～10 s~(-1)应变速率和550～950℃变形温度下，对Cu-1Ti-1Ni-0.1Mg合金进行了热变形试验。在流变应力的基础上得到了合金的本构方程，绘制了其热加工图，分析了合金的微观组织演变和析出相类型。结果表明：Cu-1Ti-1Ni-0.1Mg合金的峰值应力随着变形温度的降低和应变速率的增加而增大。变形温度的升高对动态再结晶有促进作用，合金的主要析出相为CuNi_2Ti。Cu-1Ti-1Ni-0.1Mg合金的最佳热加工区域为应变速率0.001～0.15 s~(-1),变形温度850～950℃。

关键词(KeyWords)： Cu-1Ti-1Ni-0.1Mg合金;热变形;组织演变;热加工图

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金(52071134);; 河南省科技计划项目(220910009);; 河南省高校科技创新团队支持计划(22IRTSTHN001);; 河南省科技攻关计划(212102210117)

作者(Author): 张志阳,周孟,张毅,唐顺龙,田保红,刘勇

DOI: 10.13289/j.issn.1009-6264.2022-0617

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