ISSN:1003-8620

CN:42-1243/TF

主管:中信泰富特钢集团股份有限公司

主办:大冶特殊钢有限公司

特殊钢 ›› 2009, Vol. 30 ›› Issue (5): 7-9.

• 试验研究 • 上一篇    下一篇

镍基耐蚀合金C-276平衡析出相的热力学计算

施爱娟,董建新,张麦仓,郑 磊   

  1. 北京科技大学材料科学与工程学院,北京 100083
  • 收稿日期:2009-03-24 出版日期:2009-10-01 发布日期:2022-11-22
  • 通讯作者: 董建新
  • 作者简介:施爱娟(1982-),女,北京科技大学,硕士研究生,镍基耐蚀合金组织研究。

Thermodynamic Calculation on Equilibrium Precipitated Phases in Nickel Base Corrosion-Resistant Alloy C-276

Shi  Aijuan , Dong  Jianxin , Zhang  Maicang  ,  Zheng  Lei   

  1. School of Materials Science and Engineering,University of Science and Technology,Beijing 100083
  • Received:2009-03-24 Published:2009-10-01 Online:2022-11-22
  • Contact: Dong Jianxin

摘要: 采用Thermo-Calc热力学计算软件,对C-276合金(%:≤0.01C、14.5~16.5Cr、15.0~17.0Mo、≤2.5Co、3.0~4.5W、4.0~7.0Fe、余Ni)平衡析出相γ、M6C、P、μ和非平衡凝固进行了模拟计算分析。结果表明,合金凝固过程中Mo、Cr偏析比较严重;随合金中Cr含量增加,基体γ相中Cr含量明显增加,而γ相中Mo含量明显降低;但合金中Mo含量的变化对γ相中Mo、Cr含量几乎没有影响,因合金初始Cr、Mo含量的提高增加了P相析出量,P相中主要元素为Mo,P相的增加减少基体γ相中的Mo含量。

关键词: 镍基合金C-276, 析出相, 热力学计算

Abstract: Simulated calculation and analysis on equilibrium precipitated phases γ,M6C,P,μ and non-equilibrium solidification of alloy C-276(%;≤0.01C,14.5~16.5Cr,15.0~17.0Mo,≤2.5Co,4.0~7.0Fe,balance Ni)have been carried by using Thermo-Calc thermodynamic calculation software. Results show that during solidification of alloy the segregation of Mo and Cr is serious;and with increasing Cr content in alloy,the Cr content in matrix y phase increases obviously,while the Mo content in y phase decreases markedly; but the change of Mo content in alloy nearly hasn't infuence on Mo and Cr content in y phase,because with increasing initial Cr and Mo,the precipitated amount of P phase increases,and the Mo is main element of P phase, with increasing the amount of P phase, the Mo content in matrix γ phase decreases.

Key words: Nickel Base Alloy C-276, Precipitated Phases, Thermodynamic Calculation