摘要
采用粉末冶金法和 1 2 50℃、2 0 MPa× 2 .5h热压工艺制备 Ti Nb纤维强韧化 Ti- 48Al- 2 Cr- 2 Nb( TACN)基复合材料。测试了复合材料的高温拉伸性能。结果表明 ,复合材料的高温性能优于基体。使用这种工艺制备的复合材料界面由全片层组织构成 ,纤维和基体的结合状态良好 ,纤维损伤比例较小 ,说明此工艺是制备 TACN复合材料的有效方法。
Powder metallurgy and hot pressed technology (1250℃,20 MPa×2.5 h) was adopted to manufacture TiNb fibers reinforced TiAl matrix composites.High temperature tensile property of the composite was tested.Results show that,at high temperature,the composite has a better elongation percentage as well as a higher strength than composite.The interface is made of full lamella structure,matrix and fibers combine well,and damaging ration of the fibers because of manufacture technology is little.
出处
《热加工工艺》
CSCD
北大核心
2000年第2期21-23,共3页
Hot Working Technology
