预变形对FGH97粉末高温合金热处理组织的影响  

Effect of pre-deformation on heat treatment microstructure of FGH97 PM superalloy

作　　者：韩寿波[1,2] 吕日红 张莹[1,2] 孙志坤[1,2] 李科敏[1,2] 黄虎豹[1,2] 刘明东[1,2] 张义文[1,2] 

机构地区：[1]北京钢研高纳科技股份有限公司,北京100081 [2]钢铁研究总院高温材料研究所,北京100081 [3]贵州黎阳航空动力有限公司,贵州贵阳561102

出　　处：《粉末冶金工业》2016年第6期50-54,共5页Powder Metallurgy Industry

基　　金：北京市科技计划资助项目(Z141100002814014)

摘　　要：FGH97粉末高温合金制品在生产加工过程中由于操作不当会出现局部表面凹坑,对存在该缺陷的合金制品进行检测分析,发现受外力影响的区域经热处理后晶粒异常粗大;采用热模拟实验验证了局部变形对FGH97合金热处理组织的影响。结果表明:FGH97合金在受外力作用后的合金变形量达到临界变形量时,热处理过程中会发生晶粒异常长大,造成组织不均匀,进而影响合金的性能与应用。合金在制备过程应严格遵守操作规程,避免局部发生变形。During the production and processing process,local surface pits usually occur on FGH97 PM superalloy products due to improper operation. The FGH97 alloy product with this kind of defects was tested and analyzed. The abnormal grain coarsening was found at the deformation zone caused by external force. Thermal simulation experiments were carried out to verify the effect of pre- deformation on heat treatment microstructure of FGH97 alloy. Results show that abnormal grain growth appears during heat treatment when the deformation of FGH97 alloy reaches the critical deformation,resulting in non-homogeneous microstructure,thereby affecting the performance and application of the alloy. It is advised that operation specification should be strictly abided to avoid local deformation.

关 键 词：FGH97粉末高温合金 预变形 热处理 晶粒长大 

分 类 号：TF125[冶金工程—粉末冶金] TG166.7[冶金工程—冶金物理化学]