Effect of Heat Treatments on Microstructure and Tensile Properties of TiAl Alloy Extruded below T-alpha

IMR OpenIR

	Effect of Heat Treatments on Microstructure and Tensile Properties of TiAl Alloy Extruded below T-alpha
	Liu Liangliang 1,2; Liu Dong 1; Liu Renci 1; Cui Yuyou 1; Yang Rui 1
通讯作者	Liu Dong(dliu@imr.ac.cn)
	2017-06-01
发表期刊	RARE METAL MATERIALS AND ENGINEERING
ISSN	1002-185X
卷号	46 页码:95-98
摘要	The Ti-47Al-2Cr-2Nb-0.15B (at%) alloy rod was fabricated by near isothermal canned hot extrusion at 1300 degrees C on a 3:1 extrusion ratio. With less refined microstructure including small equiaxed grain belt, remnant lamellar and coarse gamma grains in the band shape, the extrusion rod was heat-treated at 900, 1150 and 1310 degrees C separately. The tensile results at room and elevated temperature shows that samples by heat-treatment at 900 degrees C have the best balanced tensile properties with 3.3% elongation at RT. For those samples heat treated at 1150 degrees C with microstructure of near gamma and heat treated at 1310 degrees C with microstructure of near lamellar, their yield strength and ultimate tensile strength are lower than those heat treated at 900 degrees C. The remnant lamellar restricts the gamma grains from growing freely and keeps the microstructure with extrusion morphology at 900 degrees C.
关键词	TiAl alloy hot extrusion heat treatment microstructures tensile property
收录类别	SCI
语种	英语
WOS研究方向	Materials Science ; Metallurgy & Metallurgical Engineering
WOS类目	Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
WOS记录号	WOS:000406570100020
出版者	NORTHWEST INST NONFERROUS METAL RESEARCH
引用统计
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/124831
专题	中国科学院金属研究所
通讯作者	Liu Dong
作者单位	1.Chinese Acad Sci, Inst Met Res, Shenyang 110016, Peoples R China 2.Univ Sci & Techn China, Sch Mat Sci & Engn, Shenyang 11006, Peoples R China
推荐引用方式 GB/T 7714	Liu Liangliang,Liu Dong,Liu Renci,et al. Effect of Heat Treatments on Microstructure and Tensile Properties of TiAl Alloy Extruded below T-alpha[J]. RARE METAL MATERIALS AND ENGINEERING,2017,46:95-98.
APA	Liu Liangliang,Liu Dong,Liu Renci,Cui Yuyou,&Yang Rui.(2017).Effect of Heat Treatments on Microstructure and Tensile Properties of TiAl Alloy Extruded below T-alpha.RARE METAL MATERIALS AND ENGINEERING,46,95-98.
MLA	Liu Liangliang,et al."Effect of Heat Treatments on Microstructure and Tensile Properties of TiAl Alloy Extruded below T-alpha".RARE METAL MATERIALS AND ENGINEERING 46(2017):95-98.