Study on Sintering-hot Deformed Rare-earth Containing Ti-Fe-Mo-Y Alloy
P/M Ti-Fe-Mo-Y alloys with different Rare-earth Y Content are prepared by blend element method, their sintering and hot deformation behaviors are studied together with microstructure and mechanical properties. The microstructures and properties of the alloying titanium were testified by the analysis of Optical microscopy (OM), X-ray diffraction (XRD), scanning electron microscopy (SEM). The result indicated that Y element absorbs free oxygen and purify the Ti powder surface, promoting densification process. With appropriate vacuum and temperature, the blend element metal powder sintering relative density can reach more than 97％. Microstructure and mechanical properties analysis have shown that Y element composed Y2O3 particles which refine grains and improve plasticity, elevate alloy distortion ability. After hot deformation, the grains crashed and the flow Une appears, the mechanical properties of Ti-Fe-Mo-Y alloy prompted which also validated by large amount of dimples present in tensile fracture surface.
P/M Ti-Fe-Mo-Y alloy blend element method hot deformation
Liu Haiyan Tang Huiping He Werwei Liu yanbin Jia Wenpeng Liu Yong
State Key Laboratory for Porous Metals Materials,Northwest Institute for Non ferrous Metal Research, State Key Laboratory for Powder Metallurgy,Central South University,Changsha,410083,China
国际会议
The 12th World Conference Titanium(第十二届世界钛会 Ti-2011)
北京
英文
827-830
2011-06-19（万方平台首次上网日期，不代表论文的发表时间）