航空内燃机用TB6钛合金高温压缩成形特性分析
High temperature compression molding characteristics of TB6 titanium alloy for aviation internal combustion engine
许璐瑶 1辛朝阳 1王丽明1
作者信息
- 1. 黄河交通学院 机电工程学院,河南 焦作 454950
- 折叠
摘要
探究TB6钛合金高温压缩力学性能参数影响因素,主要从流动应力、材料应力—应变关系曲线等方面展开分析.研究结果表明:当应变速率在1000～3000s-1范围内不断增加时,流动应力的增加较为缓慢,该过程中存在应变率强化效应较弱;应变不断增加时,流动应力增长幅度更大,则表示该过程存在的应变硬化效应较强.该研究有助于提高钛合金的压缩成形质量,为后续参数优化奠定一定理论基础.
Abstract
Titanium alloy has a high strength ratio and is widely used in the field of aviation internal combus-tion engine. Its forming characteristics are greatly affected by metal flow. The influence of mechanical proper-ties of TB6 titanium alloy under high temperature compression was studied,mainly from the aspects of flow stress and material stress-strain relationship curve. The results show that when the strain rate increases contin-uously in the range of 1000～3000s-1,the flow stress increases slowly,and the strain rate strengthening effect is weak. When the strain continues to increase,the increase of the flow stress is larger,which indicates that the strain hardening effect of the process is strong. The research is helpful to improve the compression molding quality of titanium alloy and lay a theoretical foundation for the subsequent parameter optimization.
关键词
TB6钛合金/高温压缩/流动应力/力学性能/温度敏感性Key words
TB6 titanium alloy/High temperature compression/Flow stress/Mechanical properties/Temperature sensitivity引用本文复制引用
基金项目
校级课程教学资源库项目(2023)(HHJTXY-2023kczyk16)
出版年
2024
NETL
NSTL
万方数据