Influence of Annealing on Microstructure and Tensile Properties of Electron Beam Weldment of Powder Metallurgy Ti<sub>2</sub>AlNb Alloy

doi:10.12442/j.issn.1002-185X.20230423

IMR OpenIR

	Influence of Annealing on Microstructure and Tensile Properties of Electron Beam Weldment of Powder Metallurgy Ti₂AlNb Alloy
	Yin, Xuchen 1,2; Chen, Zhiyong 3; Wang, Qingjiang 3; Liu, Jianrong 3; Li, Wenhui 1; Deng, Hao 2; Luo, Hengjun 2
通讯作者	Wang, Qingjiang(qjwang@imr.ac.cn)
	2024-08-01
发表期刊	RARE METAL MATERIALS AND ENGINEERING
ISSN	1002-185X
卷号	53 期号:8 页码:2293-2300
摘要	Annealing treatment in the temperature range of 800-900 degrees C was applied to the electron beam weldments of powder metallurgy Ti2AlNb alloys to investigate its influence on microstructure and tensile properties at room temperature and 650 degrees C. The results show that there are coarse columnar and equiaxed B2 grains in the fusion zone (FZ) in the as-welded weldments. Transformation from B2 phase to O+B2 phase occurs in the FZ during the post-weld annealing treatments. The morphology of the O phase is characterized as the basket-weave structure and the size of the O phase plate increases with the increase in the annealing temperature. The microhardness of the FZ of the as-welded weldments is higher than that in the base metal (BM). After the annealing treatments, the microhardness in the FZ increases significantly, which gradually decreases with the increase in annealing temperature. At room temperature, all tensile specimens are fractured at the FZ. The tensile strength of the as-welded weldments is close to that of the BM and local large plastic deformation occurs in the FZ. However, the strength and ductility of the weldments decrease slightly after the post-weld annealing treatment. At 650 degrees C, most of the tensile specimens are fractured at the FZ. The as-welded weldments are failured at the FZ, suggesting the brittle intergranular fracture. After the annealing treatments, there is an apparent improvement in strength of the FZ in the weldments. With the annealing temperature increasing up to 900 degrees C, the failure locations are shifted from the FZ to the BM.
关键词	powder metallurgy Ti2AlNb alloy electron beam weldment annealing treatment microstructure tensile property
DOI	10.12442/j.issn.1002-185X.20230423
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:001320375700004
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/321006/190333
专题	中国科学院金属研究所
通讯作者	Wang, Qingjiang
作者单位	1.Taiyuan Univ Technol, Coll Aeronaut & Astronaut, Taiyuan 030024, Peoples R China 2.China Natl Erzhong Grp Deyang Wanhang Die Forging, Deyang 618000, Peoples R China 3.Chinese Acad Sci, Inst Met Res, Shenyang 110016, Peoples R China
推荐引用方式 GB/T 7714	Yin, Xuchen,Chen, Zhiyong,Wang, Qingjiang,et al. Influence of Annealing on Microstructure and Tensile Properties of Electron Beam Weldment of Powder Metallurgy Ti₂AlNb Alloy[J]. RARE METAL MATERIALS AND ENGINEERING,2024,53(8):2293-2300.
APA	Yin, Xuchen.,Chen, Zhiyong.,Wang, Qingjiang.,Liu, Jianrong.,Li, Wenhui.,...&Luo, Hengjun.(2024).Influence of Annealing on Microstructure and Tensile Properties of Electron Beam Weldment of Powder Metallurgy Ti₂AlNb Alloy.RARE METAL MATERIALS AND ENGINEERING,53(8),2293-2300.
MLA	Yin, Xuchen,et al."Influence of Annealing on Microstructure and Tensile Properties of Electron Beam Weldment of Powder Metallurgy Ti₂AlNb Alloy".RARE METAL MATERIALS AND ENGINEERING 53.8(2024):2293-2300.