真空热处理后Ni-Co-W-Ta-Al-Cr-Mo-Re-Nb-Hf系镍基单晶高温合金表面的氧化状态分析  

Oxidation analysis on surface of Ni-based Ni-Co-W-Ta-Al-Cr-Mo-Re-Nb-Hf single crystal superalloy after vacuum heat treatment

作　　者：孔令利 贺瑞军[1] 刘杭 成亦飞 Kong Lingli;He Ruijun;Liu Hang;Cheng Yifei(Beijing Institute of Aeronautical Materials,Beijing 100095,China)

机构地区：[1]北京航空材料研究院,北京100095

出　　处：《金属热处理》2021年第8期61-65,共5页Heat Treatment of Metals

基　　金：北京航空材料研究院创新基金(KZ21170323)。

摘　　要：将Ni-Co-W-Ta-Al-Cr-Mo-Re-Nb-Hf系镍基单晶高温合金试样在真空炉中完成固溶和时效真空热处理,由于设备状态或是其他原因造成试样表面存在不同程度的氧化(即表现出不同的氧化色),利用光学显微镜、扫描电镜和能谱分析对不同氧化色的单晶高温合金试样表面氧化微观组织和氧化物成分进行观察和测试。结果表明:单晶高温合金试样随着氧化程度的加深表面氧化物的组织状态和成分存在不同程度的变化,对于该氧化问题应详细分析原因并对症处理,最终才能获得表面质量满足要求的单晶高温合金制件。Ni-based Ni-Co-W-Ta-Al-Cr-Mo-Re-Nb-Hf single crystal superalloy specimens were solution treated and aged in a vacuum furnace,and the surface of the specimens showed different oxidation colors due to equipment status or other reasons.The oxidation microstructure and oxide composition on the surface of the single crystal superalloy specimens with different oxidation colors were observed and tested by means of OM,SEM and EDS.The results show that the microstructure status and composition of surface oxides change with the deepening of oxidation degree in different degrees.The oxidation phenomenon showing different oxidation colors should be analyzed for the reasons in detail and treated symptomatically,so the single crystal superalloy with a surface quality that meets the technical requirements can be obtained.

关 键 词：镍基单晶高温合金 真空热处理 氧化色 微观组织 成分 

分 类 号：TG156[金属学及工艺—热处理]