The Role of Gd Addition in the Microstructure and Mechanical Property of Directionally Solidified Ti46A10. 5W0. 5Si Alloys

摘要：

The microstructure and compressive properties of directionally solidified Ti46Al0. 5W0. 5Si and Ti46Al0. 5W0. 5Si0. 165Gd alloys were investigated. The macrostructure of the ingots obtained in rapid casting consisted mainly of coarse columnar grains parallel to the axial direction of the ingots. The Ti46Al0. 5W0. 5Si alloys have a nearly fully lamellarstructure (α2/γ) with γ/Ti5Si3 and some W-rich B2 phases. Gd was oxidized and formed Gd2TiO5, which would refine grains. The specimens with growth direction parallel to the loading direction have a higher strength than those with growth direction perpendicular to the loading direction.

关键词： TiAl alloys Directional solidification gadolinium compressive property

作者: R. Chen J. Yang H. Ding J. Guo H. Fu

作者单位: School of Materials Science and Engineering, Harbin Institute of Technology, Harbin, 150001 , China School of Materials Science and Engineering, Harbin Institute of Technology, Harbin, 150001 , China

会议类型: 国际会议

会议名称: The 12th World Conference Titanium(第十二届世界钛会 Ti-2011)

会议地点: 北京

会议语种:英文

页码: 1294-1298

在线出版日期: 2011-06-19（万方平台首次上网日期，不代表论文的发表时间）