Cu-2Ti-0.3Zr合金的热变形行为及组织演变
Hot deformation behavior and microstructure evolution of Cu-2Ti-0.3Zr alloy
王能能 1田保红 2周孟 2景柯 2刘勇 2邹晋3
作者信息
- 1. 河南科技大学材料科学与工程学院,河南洛阳 471023
- 2. 河南科技大学材料科学与工程学院,河南洛阳 471023;有色金属新材料与先进加工技术省部共建协同创新中心,河南洛阳 471023
- 3. 江西省科学院江西省铜钨新材料重点实验室,江西南昌 330096
- 折叠
摘要
通过真空熔炼技术制备了 Cu-2Ti-0.3Zr合金,在变形温度为750～900℃及应变速率为0.001～1 s-1的条件下,采用Gleeble-1500D热模拟试验机对Cu-2Ti-0.3Zr合金进行了热变形试验.通过分析合金的热变形行为,构建了其本构方程和热加工图,并分析了其在不同变形条件下的微观组织演变.结果表明:合金的流变应力随变形温度的降低而增加,随应变速率增加而上升.通过绘制热加工图,得到了 Cu-2Ti-0.3Zr合金的最佳热加工工艺:变形温度为825～900 ℃和应变速率为0.010～0.050 s-1.在较优的工艺条件下,合金的组织主要由变形晶粒和等轴亚晶组织组成.
Abstract
Cu-2Ti-0.3Zr alloy was prepared by vacuum melting technology.Under the conditions of deformation temperature of 750-900 ℃and strain rate of 0.001-1 s-1,hot deformation tests were conducted on the Cu-2Ti-0.3Zr alloy using Gleeble-1500D thermal simulation testing machine.By analyzing the hot deformation behavior of the alloy,its constitutive equation and hot processing map were constructed,and the microstructure evolution under different deformation conditions was analyzed.The results show that the flow stress of the alloy increases with the decrease of deformation temperature and the increase of strain rate.By drawing hot processing map,the optimal hot working process for the Cu-2Ti-0.3Zr alloy is obtained:the deformation temperature of 825-900 ℃ and the strain rate of 0.010-0.050 s-1.Under optimal process conditions,the microstructure of the alloy mainly consists of deformed grains and equiaxed subgrain structure.
关键词
Cu-Ti-Zr合金/流变应力/本构方程/热加工图/组织演变Key words
Cu-Ti-Zr alloy/flow stress/constitutive equation/hot processing map/microstructure evolution引用本文复制引用
基金项目
河南省自然科学基金面上项目(232300420089)
中国博士后科学基金(2023TQ0107)
江西省重点研发计划(20224BBE51047)
出版年
2024
NETL
NSTL
万方数据