Acta Metallurgica Sinica (English Letters) ›› 2010, Vol. 23 ›› Issue (3): 215-222.DOI: 10.11890/1006-7191-103-215

• 研究论文 • 上一篇    下一篇

Phase stability of Ta-W alloys

Li Xiaobo1,zhangping2   

  1. 1.
    2. 湖南湘潭大学土木工程与力学学院
  • 收稿日期:2010-01-11 修回日期:2010-04-20 出版日期:2010-06-25 发布日期:2010-10-14
  • 通讯作者: zhangping

Phase stability of Ta-W alloys

Li Xiaobo1,zhangping2   

  • Received:2010-01-11 Revised:2010-04-20 Online:2010-06-25 Published:2010-10-14

关键词: Ta-W alloys, phase diagram, characteristic crystal model, thermodynamics, phase stability

Abstract: The characteristic crystal model is applied to the study of phase stability and thermodynamics in substitutional bcc-based Ta-W alloys. The basic principle and method of alloy thermodynamics which is described by the characteristic crystal model is introduced in detail. The thermodynamic properties of the Ta-W system are evaluated to describe the Gibbs energies of various phases including both disordered and ordered phases. The phase diagram of Ta-W is assessed and predicted. The results are in good agreement with experiments and better than that of first principle.