朱孜毅,孟利,陈冷.Co-Cr-W-Ni合金中碳化物析出机制的研究[J].稀有金属材料与工程,2019,48(9):2893~2898.[Zhu Ziyi,Meng Li,Chen Leng.Study on the Mechanism of Carbide Precipitation in Co-Cr-W-Ni Alloy[J].Rare Metal Materials and Engineering,2019,48(9):2893~2898.]
Co-Cr-W-Ni合金中碳化物析出机制的研究
投稿时间:2018-04-16  修订日期:2018-05-14
中文关键词:  Co-Cr-W-Ni  碳化物  类型  析出  
基金项目:国家重点研发计划资助(项目号2017YFA0403804)
中文摘要:
      Co-Cr-W-Ni合金中碳化物的类型和析出机制对合金的力学性能影响显著,因此,本文用XRD、SEM-EBSD和TEM技术研究了Co-Cr-W-Ni合金时效后碳化物的析出类型、分布特征和析出机制。实验结果表明,Co-Cr-W-Ni合金中碳化物的主要类型为M7C3、M6C和M23C6;M23C6型碳化物主要分布于孪晶与g相晶粒的三叉交界处,与基体g相是立方-立方的取向关系;M6C型碳化物退化分解并原位析出M7C3型碳化物是Co-Cr-W-Ni合金中一种重要的碳化物析出机制。
Study on the Mechanism of Carbide Precipitation in Co-Cr-W-Ni Alloy
英文关键词:Co-Cr-W-Ni  carbides  type  precipitation
英文摘要:
      The Type and Precipitation Mechanism of Carbide in Co-Cr-W-Ni Alloy have significant influence on the mechanical properties of alloy.Therefore, the precipitation type, distribution characteristics and precipitation mechanism of carbides after aging of Co-Cr-W-Ni alloy were studied in this work. The ageing samples were observed by XRD, scanning electron microscopy and transmission electron microscopy. The experimental results show that the types of carbides are M7C3, M6C and M23C6. M23C6 carbide preferentially precipitates at grain and twin boundaries with a cube-cube orientation relationship with the matrix. The M7C3 carbide decomposed gradually with the M6C carbide precipitating in situ is an important mechanism of carbide precipitation.
作者单位E-mail
朱孜毅 北京科技大学材料科学与工程学院 zhuzy@xs.ustb.edu.cn 
孟利 钢铁研究总院冶金工艺研究所  
陈冷 北京科技大学材料科学与工程学院  
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