摘要
实验研究了固溶处理工艺对FGH91合金组织和性能的影响。分析发现,FGH91合金在低于γ’相固溶温度进行固溶处理,随着固溶温度的升高,其晶粒尺寸没有明显变化,晶内一次γ’相含量减少,二次γ’相逐渐增多且尺寸略有增大;FGH91合金随着固溶温度的升高,室温硬度,室温及高温拉伸强度提高;FGH91合金随固溶处理后冷却速率的降低,晶界弯曲幅度和弯曲频率增加,合金持久蠕变性能提高。
The effect of solution treatment on the microstructure and properties of FGH91 was studied.The re‐sults show that when FGH91 alloy is treated at a solution temperature belowγ'solidus,with the increase of solu‐tion temperature,the grain size of FGH91 alloy has no obvious change,the content of primaryγ'phase decreases.The size and content of secondaryγ'phase increase gradually with the increase of solution temperature.The hard‐ness and tensile strength at room temperature and high temperature tensile strength of FGH91 alloy increase with the increase of solution temperature.With the decrease of cooling rate after solution treatment,the grain bound‐ary bending amplitude and frequency increase,and the stress rupture life and creep property of FGH91 alloy is improved.
作者
李科敏
崔阳阳
朱晓蕾
王宁波
贾建
刘明东
LI Kemin;CUI Yangyang;ZHU Xiaolei;WANG Ningbo;JIA Jian;LIU Mingdong(Central Iron and Steel Research Institute,High Temperature Material Institute,Beijing 100081,China;Beijing CISRI-Gaona Materials Technology Co Ltd,Beijing 100081,China)
出处
《粉末冶金工业》
CAS
北大核心
2023年第4期44-48,74,共6页
Powder Metallurgy Industry
基金
国家科技重大专项资助项目(2017-Ⅵ-0008-0078)。
关键词
FGH91
固溶处理
γ’相
弯曲晶界
组织
FGH91
solution treatment
γ′phase
serrated grain boundary
microstructure
