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宋志刚,徐长征,蒲恩祥,苗亚洲,马天军,丰涵,郑文杰.高Mo超级奥氏体不锈钢和Ni-Cr-Mo镍基合金析出相研究及对比[J].稀有金属材料与工程(英文),2018,47(3):895~903.[Song Zhigang,Xu Changzheng,Pu Enxiang,Miao Yanzhou,Ma Tianjun,Feng Han,Zheng Wenjie.Research and Comparasion on Precipitated Phases of High Mo Super Austenitic Stainless Steel and Ni-Cr-Mo Nickel-base Alloy[J].Rare Metal Materials and Engineering,2018,47(3):895~903.]
Research and Comparasion on Precipitated Phases of High Mo Super Austenitic Stainless Steel and Ni-Cr-Mo Nickel-base Alloy
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Received:September 10, 2017  Revised:December 14, 2017
DOI:
Key words: High Mo super austenitic stainless steel  Ni - Cr - Mo nickel-based alloy  Precipitated phase
Foundation item:
Author NameAffiliationE-mail
Song Zhigang Central Iron and Steel Research Institute songzhigang@nercast.com 
Xu Changzheng 宝钢特钢有限公司  
Pu Enxiang Tsinghua University  
Miao Yanzhou Central Iron and Steel Research Institute  
Ma Tianjun 宝钢特钢有限公司  
Feng Han Central Iron and Steel Research Institute  
Zheng Wenjie Central Iron and Steel Research Institute  
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Abstract:
      Typical grade 654SMo and C-276 were selected to investigate the precipitated phases of high Mo super austenictic stainless steel and Ni-Cr-Mo Nickel-base alloy. Microstructure observation, EDS and phase analysis was taken for 654SMo and C-276 samples at different aging conditions.The results showed that the types and morphology of the precipitated phase in 654SMo and C-276 were different due to their different alloy system athough they both contained high content of Cr, Mo element. About eight kinds of second phases were precipitated in 654SMo, which included σ phase,Cr2N,μ phase,χphase,Laves phase,M23C6,M6C and M3C. σ phase and Cr2N were the main harmful phases of 654SMo and the peak precipitating temperature is 900℃. For C-276 alloy, M6C and μ phase were the main precipitated phases and σ phase wasn’t found under the aging condition of this aticle.