QAl 10-4-4合金热变形行为及热加工图  

Thermal deformation behavior and thermal processing diagram of QAl 10-4-4 alloy

作　　者：朱雨生[1] 郭桦 吕光辉 许磊 王伟波 张帅飞 ZHU Yusheng;GUO Hua;LU Guanghui;XU Lei;WANG Weibo;ZHANG Shuaifei(Luoyang Ship Material Research Institute The 725th Research Institute of China State Shipbuilding Co.,Ltd.,Luoyang 471023,Henan China)

机构地区：[1]洛阳船舶材料研究所中国船舶集团有限公司第七二五研究所,河南洛阳471023

出　　处：《锻压装备与制造技术》2024年第4期139-143,共5页China Metalforming Equipment & Manufacturing Technology

基　　金：国家重点研发计划项目(2021YFB3700700)。

摘　　要：采用Gleeble-3500热模拟机,对QAl 10-4-4合金在变形温度为750~900℃,应变速率为0.01~10s^(-1)条件下进行等温热压缩变形实验。结果表明:在试验范围内,合金的流变应力随应变速率的增大而增大,随应变温度的升高而降低。用Zener-Hollomon参数对QAl 10-4-4合金高温流变应力行为进行描述,建立了本构方程,其形变激活能Q为368.685kJ/mol。构建热加工图,得到QAl10-4-4合金较优热加工工艺:860~900℃,应变速率0.01~0.2s^(-1)。The isothermal compression deformation test of QAl 10-4-4 alloy was carried out by using Gleeble-3500 thermal simulator under the conditions of deformation temperature of 750~900℃ and strain rate of 0.01~10s^(-1).The results show that the rheological stress of the alloy increases with the increase of strain rate and decreases with the increase of strain temperature within the test range.The high-temperature rheological stress behavior of QAl 10-4-4 alloy was described by Zener-Hollomon parameters,and the constitutive equation was established,and the deformation activation energy Q was 368.685 kJ/mol.The thermal processing diagram was constructed,and the optimal thermal working technology of QAl10-4-4 alloy was obtained:860~900℃,and the strain rate was 0.01~0.2s^(-1).

关 键 词：QAl 10-4-4铜合金 热压缩变形 本构方程 热加工图 

分 类 号：TG146.1[一般工业技术—材料科学与工程]