Effect of Low and High Double Heat Treatment on Fracture Toughness of TC4 Titanium Alloy Fabricated by Selective Laser Melting

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	Effect of Low and High Double Heat Treatment on Fracture Toughness of TC4 Titanium Alloy Fabricated by Selective Laser Melting
	Li Yuhai 2; Zuo Baiqiang 1,2; Cai Yusheng 1; Jiang Muchi 1,2; Ren Dechun 1; Ji Haibin 1; Lei Jiafeng 1
刊名	RARE METAL MATERIALS AND ENGINEERING
	2022-05-01
卷号	51 期号:5 页码:1864-1872
关键词	selective laser melting TC4 titanium alloy heat treatment fracture toughness
ISSN号	1002-185X
通讯作者	Ji Haibin(hbji@imr.ac.cn)
英文摘要	The effect of different heat treatment temperatures on microstructure and fracture toughness of TC4 titanium alloy fabricated by selective laser melting (SLM) was studied. The results show that the microstructure of low temperature annealed alloy is characterized by a large number of acicular martensite alpha' phase and beta phase. The longitudinal section is characterized by columnar crystals growing along the forming direction. The angle between the acicular martensite alpha' phase and the forming direction is about 45 degrees. After heat treatment, the acicular alpha' phase is transformed into lamellar alpha phase, forming alpha+beta lath structure. With the increase of heat treatment temperature, the alpha lamellar coarsens gradually, the zigzags of crack propagation path increase, and the fracture toughness gradually increases from 43.1 MPa.m(1/2) to 109 MPa.m(1/2).
WOS研究方向	Materials Science ; Metallurgy & Metallurgical Engineering
语种	英语
出版者	NORTHWEST INST NONFERROUS METAL RESEARCH
WOS记录号	WOS:000813756100043
内容类型	期刊论文
源URL	[http://ir.imr.ac.cn/handle/321006/174906]
专题	金属研究所_中国科学院金属研究所
通讯作者	Ji Haibin
作者单位	1.Chinese Acad Sci, Inst Met Res, Shenyang 110016, Peoples R China 2.Shenyang Ligong Univ, Shenyang 110159, Peoples R China
推荐引用方式 GB/T 7714	Li Yuhai,Zuo Baiqiang,Cai Yusheng,et al. Effect of Low and High Double Heat Treatment on Fracture Toughness of TC4 Titanium Alloy Fabricated by Selective Laser Melting[J]. RARE METAL MATERIALS AND ENGINEERING,2022,51(5):1864-1872.
APA	Li Yuhai.,Zuo Baiqiang.,Cai Yusheng.,Jiang Muchi.,Ren Dechun.,...&Lei Jiafeng.(2022).Effect of Low and High Double Heat Treatment on Fracture Toughness of TC4 Titanium Alloy Fabricated by Selective Laser Melting.RARE METAL MATERIALS AND ENGINEERING,51(5),1864-1872.
MLA	Li Yuhai,et al."Effect of Low and High Double Heat Treatment on Fracture Toughness of TC4 Titanium Alloy Fabricated by Selective Laser Melting".RARE METAL MATERIALS AND ENGINEERING 51.5(2022):1864-1872.