Effect of High Density Current Pulses on Microstructure and Mechanical Properties of Dual-Phase Wrought Superalloy

doi:10.1007/s40195-021-01211-7

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	Effect of High Density Current Pulses on Microstructure and Mechanical Properties of Dual-Phase Wrought Superalloy
	Zhang, Jun 1,2; Liu, Ji-De 2; Zhang, Xin-Fang 1; Cui, Chuan-Yong 2; Li, Jin-Guo 2; Zhou, Yi-Zhou 2; Wang, Bao-Quan 2; Guo, Jing-Dong 2
刊名	ACTA METALLURGICA SINICA-ENGLISH LETTERS
	2021-03-03
页码	10
关键词	Electric current pulse Superalloys Precipitation Grain size Mechanical properties
ISSN号	1006-7191
DOI	10.1007/s40195-021-01211-7
通讯作者	Liu, Ji-De(jdliu@imr.ac.cn) ; Zhang, Xin-Fang(xfzhang@ustb.edu.cn) ; Guo, Jing-Dong(jdguo@imr.ac.cn)
英文摘要	In this study, high density electric current pulse (ECP) treatment was introduced instead of the conventional solution treatment, and the gamma ' phase was completely dissolved under the ECP treatment within only several milliseconds at 1148 degrees C. Due to the extremely short treatment time and high cooling rate, the growth of gamma-phase matrix grain and gamma ' phase precipitate was effectively retarded. By comparing with the conventional heat process, the grain size of ECP treated sample was controlled to about 15 mu m, the size of the re-precipitated gamma ' phase reduced from 65 to 35 nm, and the number density of gamma ' precipitate increased from 1.46 x 10(8) to 3.03 x 10(8)/mm(2). The Vickers hardness, ultimate tensile strength and yield strength of the ECP treated sample were significantly improved. According to the theoretical derivation of kinetics, the ECP treatment introduces an extra electrical free energy which promoted the dissolution of gamma ' phase. The ECP treatment may provide a new method for solution treatment of the Ni-based superalloy.
资助项目	National Key R&D Program of China[2020YFA0714900] ; National Natural Science Foundation of China[51874023] ; National Natural Science Foundation of China[U1860206] ; National Natural Science Foundation of China[51871221] ; National Natural Science Foundation of China[51671189] ; National Natural Science Foundation of China[51971231] ; Fundamental Research Funds for the Central Universities[FRF-TP-20-02B] ; Recruitment Program of Global Experts ; Ministry of Science and Technology of China[2017YFA0700703] ; Ministry of Science and Technology of China[2019YFA0705304]
WOS研究方向	Metallurgy & Metallurgical Engineering
语种	英语
出版者	CHINESE ACAD SCIENCES, INST METAL RESEARCH
WOS记录号	WOS:000625092700001
资助机构	National Key R&D Program of China ; National Natural Science Foundation of China ; Fundamental Research Funds for the Central Universities ; Recruitment Program of Global Experts ; Ministry of Science and Technology of China
内容类型	期刊论文
源URL	[http://ir.imr.ac.cn/handle/321006/161024]
专题	金属研究所_中国科学院金属研究所
通讯作者	Liu, Ji-De; Zhang, Xin-Fang; Guo, Jing-Dong
作者单位	1.Univ Sci & Technol Beijing, State Key Lab Adv Met, Sch Met & Ecol Engn, Beijing 100083, Peoples R China 2.Chinese Acad Sci, Inst Met Res, Shenyang 110016, Peoples R China
推荐引用方式 GB/T 7714	Zhang, Jun,Liu, Ji-De,Zhang, Xin-Fang,et al. Effect of High Density Current Pulses on Microstructure and Mechanical Properties of Dual-Phase Wrought Superalloy[J]. ACTA METALLURGICA SINICA-ENGLISH LETTERS,2021:10.
APA	Zhang, Jun.,Liu, Ji-De.,Zhang, Xin-Fang.,Cui, Chuan-Yong.,Li, Jin-Guo.,...&Guo, Jing-Dong.(2021).Effect of High Density Current Pulses on Microstructure and Mechanical Properties of Dual-Phase Wrought Superalloy.ACTA METALLURGICA SINICA-ENGLISH LETTERS,10.
MLA	Zhang, Jun,et al."Effect of High Density Current Pulses on Microstructure and Mechanical Properties of Dual-Phase Wrought Superalloy".ACTA METALLURGICA SINICA-ENGLISH LETTERS (2021):10.