Effect of low-energy pulse current on the microstructure and properties of a Ni-based superalloy

doi:10.1016/j.jmst.2024.12.066

IMR OpenIR

	Effect of low-energy pulse current on the microstructure and properties of a Ni-based superalloy
	Ma, Jinchao 1,2; Guo, Jingdong 1; Liu, Jide 2; Luo, Xinyi 2,3; Zhang, Zhipeng 2,4; Zhang, Tao 5,6; Yan, Jiacheng 1,2,3; Zhang, Mingkui 1,5; Cui, Chuanyong 2; Zhang, Xinfang 5,6; Zhou, Yizhou 2; Li, Jinguo 2
通讯作者	Guo, Jingdong(jdguo@imr.ac.cn) ; Liu, Jide(jdliu@imr.ac.cn)
	2025-10-01
发表期刊	JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
ISSN	1005-0302
卷号	231 页码:180-192
摘要	This study proposes a low-energy pulse current (LEPC) rapid solution treatment method, which can dissolve more primary gamma' phase in a shorter time and effectively suppress abnormal grain growth, thereby successfully achieving microstructure optimization and property enhancement. The microstructure analysis showed that, compared with the 62.5 % dissolution rate of the standard traditional solution treatment (1100 degrees C/4 h), LEPC achieved an 88.9 % dissolution of the primary gamma' phase in just 5 min at the same temperature. Furthermore, due to the rapidity of the LEPC treatment and its "targeted dissolution effect" on the gamma' phase, excessive grain growth was effectively suppressed, resulting ingrain size comparable to those obtained with traditional solution treatment. Mechanical property testing indicated that the alloy treated with LEPC had a hardness of 531 HV at room temperature, while the yield strength, Ultimate strength, and maximum strain reached 994 MPa, 1030 MPa, and 5.1 % at the service temperature (750 degrees C). Compared to the standard traditional solution treatment, these properties were improved by 10.4 %, 11.1 %, 10.4 %, and 17.5 %, respectively. Finally, theoretical calculations revealed that the non- thermal effect of LEPC reduced the dissolution-free energy by approximately 49.4 kJ/mol and increased the diffusion coefficient by about 76 times, which was the fundamental reason for the accelerated dissolution of the primary gamma' phase. (c) 2025 Published by Elsevier Ltd on behalf of The editorial office of Journal of Materials Science & Technology.
关键词	Low-energy pulse current Solution treatment Primary gamma ' phase Targeted dissolution effect Microstructure Property
资助者	National Key R&D Program of China
DOI	10.1016/j.jmst.2024.12.066
收录类别	SCI
语种	英语
资助项目	National Key R&D Program of China[2020YFA0714901] ; National Key R&D Program of China[2020YFA0714904]
WOS研究方向	Materials Science ; Metallurgy & Metallurgical Engineering
WOS类目	Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
WOS记录号	WOS:001448016100001
出版者	ELSEVIER
引用统计
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/192137
专题	中国科学院金属研究所
通讯作者	Guo, Jingdong; Liu, Jide
作者单位	1.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China 2.Chinese Acad Sci, Shi Changxu Innovat Ctr Adv Mat, Inst Met Res, Shenyang 110016, Peoples R China 3.Shenyang Univ Technol, Sch Mat Sci & Engn, Shenyang 110870, Peoples R China 4.Northeastern Univ, Sch Mat Sci & Engn, Key Lab Anisotropy & Texture Mat, MOE, Shenyang 110819, Peoples R China 5.Univ Sci & Technol Beijing, Sch Met & Ecol Engn, Beijing 100083, Peoples R China 6.Inner Mongolia Univ Sci & Technol, Sch Rare Earth Ind, Key Lab Green Extract & Efficient Utilizat Light R, Minist Educ, Baotou 014010, Peoples R China
推荐引用方式 GB/T 7714	Ma, Jinchao,Guo, Jingdong,Liu, Jide,et al. Effect of low-energy pulse current on the microstructure and properties of a Ni-based superalloy[J]. JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY,2025,231:180-192.
APA	Ma, Jinchao.,Guo, Jingdong.,Liu, Jide.,Luo, Xinyi.,Zhang, Zhipeng.,...&Li, Jinguo.(2025).Effect of low-energy pulse current on the microstructure and properties of a Ni-based superalloy.JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY,231,180-192.
MLA	Ma, Jinchao,et al."Effect of low-energy pulse current on the microstructure and properties of a Ni-based superalloy".JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY 231(2025):180-192.