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
朱雨生 1郭桦 1吕光辉 1许磊 1王伟波 1张帅飞1
作者信息
- 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
- 折叠
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.
Abstract
The isothermal compression deformation test of QAl 10-4-4 alloy was carried out by using Glee-ble-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 e-quation was established,and the deformation activation energy Q was 368.685 kJ/mol. The thermal process-ing 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Key words
QAl 10-4-4 copper alloy/Thermal compression deformation/Constitutive equations/Thermal processing diagram引用本文复制引用
基金项目
国家重点研发计划(2021YFB3700700)
出版年
2024
NETL
NSTL
万方数据