Effect of Heat Treatment on Microstructure and Tensile Properties of a New Type of Ni-based Superalloy Designed for Additive Manufacturing

doi:10.12442/j.issn.1002-185X.20230109

IMR OpenIR

	Effect of Heat Treatment on Microstructure and Tensile Properties of a New Type of Ni-based Superalloy Designed for Additive Manufacturing
	Wang Guan 1,2; Song Wei 2; Liang Jingjing 2; Li Jinguo 2; Zhou Yizhou 2; Sun Xiaofeng 2; Jiang Qingwei 1
通讯作者	Jiang Qingwei(jqw6@163.com)
	2024-03-01
发表期刊	RARE METAL MATERIALS AND ENGINEERING
ISSN	1002-185X
卷号	53 期号:3 页码:787-795
摘要	The effects of different heat treatment processes on the microstructure and properties of a new type of Ni-based superalloy ZGH451 were studied. The results show that the as-deposited microstructure is mainly composed of epitaxial micro- columnar grains, and there is gamma/gamma' eutectic exists among the interdendritic region. The segregation of element in the alloy results in the size difference of gamma' phase between dendritic region and interdendritic region, which are 100 nm and 250 nm, respectively. The microstructure and properties of the alloy are different with varying heat treatment processes: as the solution temperature increases from 1180 degrees C to 1350 degrees C, the segregation degree of the alloy decreases gradually until the initial melting microstructure is found at 1350 degrees C. With the first aging temperature increasing from 1050 degrees C to 1150 degrees C, the size of gamma' phase increases gradually, and its shape changes from spherical and other irregular shape to cube shape. In summary, the heat treatment process is optimized and the one suitable for the alloy (HT2) is obtained. Compared with the as- deposited alloy, the grain size of alloy is significantly increased after the complete heat treatment, and the segregation and gamma/gamma' eutectic of the alloy are eliminated. The denser dislocation network is formed at the gamma/gamma' interface during tensile deformation at 1000 degrees C. The tensile strength and yield strength are 520 MPa and 269 MPa, respectively, and the elongation is 11%.
关键词	Ni-based superalloy additive manufacturing heat treatment tensile deformation
DOI	10.12442/j.issn.1002-185X.20230109
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:001252657300020
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/321006/188082
专题	中国科学院金属研究所
通讯作者	Jiang Qingwei
作者单位	1.Kunming Univ Sci & Technol, Sch Mat Sci & Engn, Kunming 650093, Yunnan, Peoples R China 2.Chinese Acad Sci, Inst Met Res, Shi Changxu Innovat Ctr Adv Mat, Shenyang 110016, Peoples R China
推荐引用方式 GB/T 7714	Wang Guan,Song Wei,Liang Jingjing,et al. Effect of Heat Treatment on Microstructure and Tensile Properties of a New Type of Ni-based Superalloy Designed for Additive Manufacturing[J]. RARE METAL MATERIALS AND ENGINEERING,2024,53(3):787-795.
APA	Wang Guan.,Song Wei.,Liang Jingjing.,Li Jinguo.,Zhou Yizhou.,...&Jiang Qingwei.(2024).Effect of Heat Treatment on Microstructure and Tensile Properties of a New Type of Ni-based Superalloy Designed for Additive Manufacturing.RARE METAL MATERIALS AND ENGINEERING,53(3),787-795.
MLA	Wang Guan,et al."Effect of Heat Treatment on Microstructure and Tensile Properties of a New Type of Ni-based Superalloy Designed for Additive Manufacturing".RARE METAL MATERIALS AND ENGINEERING 53.3(2024):787-795.