固溶温度对GH4163合金显微组织及拉伸性能的影响
Effect of Solid Solution Temperature on Microstructure and Tensile Properties of GH4163 Alloy
李晴1
作者信息
- 1. 大连理工大学宁波研究院,宁波 315020
- 折叠
摘要
通过调控固溶温度,探究不同固溶温度下GH4163合金的显微组织、室温及高温拉伸性能的变化规律.原始态样品显微组织为变形组织,晶界不连续,碳化物呈偏聚条带状分布;当固溶温度为1 000 ℃时,晶粒晶界清晰,晶粒发生不完全再结晶,碳化物条带状偏聚现象明显改善;当固溶温度为1 050 ℃时,晶粒长大缓慢;当固溶温度为1 080 ℃时,条带状分布的碳化物明显减少,晶粒开始迅速长大.GH4163合金的室温屈服强度与晶粒尺寸满足霍尔佩奇关系σy=413.1+1 578.7d-1/2;随固溶温度升高,合金高温抗拉强度无明显降低;室温塑性及高温塑性均先增加后降低,当固溶温度为1 080 ℃时,合金展现出最优异的伸长率.
Abstract
The microstructure of GH4163 alloy at different solid solution temperatures,the changing pattern of tensile properties at room and high temperature,are investigated by adjusting the solution temperature.The microstructure of the original state sample is deformed tissue,with discontinuous grain boundaries and biased polymer band distribution.The grain boundaries are clear,the grain has incomplete recrystallization,and the band polarization of carbide strip is signifi-cantly improved when the solid solution temperature is 1 000 ℃.The grains grow slowly when the solution temperature is 1 050 ℃.The carbides are significantly reduced,and the grains begin to grow rapidly when the solution temperature is 1 080 ℃.The relationship between grain size and yield strength of GH4163 alloy at room temperature satisfies Hall-Petch,which is σy=413.1+1 578.7d-1/2 The tensile strength ofthe alloy at high temperature changes little with the solution temperature increasing.Both room and high temperature plasticity increases first and then decreases.The alloy exhibits the most exc.ellent elongation at the solid solution temperature of 1 080 ℃.
关键词
GH4163合金/固溶温度/显微组织/拉伸性能Key words
GH4163 Alloy/Solid Solution Temperature/Microstructure/Tensile Properties引用本文复制引用
出版年
2024
NETL
NSTL
万方数据