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Effect of High Density Current Pulses on Microstructure and Mechanical Properties of Dual-Phase Wrought Superalloy
Zhang, Jun1,2; Liu, Ji-De2; Zhang, Xin-Fang1; Cui, Chuan-Yong2; Li, Jin-Guo2; Zhou, Yi-Zhou2; Wang, Bao-Quan2; Guo, Jing-Dong2
Corresponding AuthorLiu, Ji-De(jdliu@imr.ac.cn) ; Zhang, Xin-Fang(xfzhang@ustb.edu.cn) ; Guo, Jing-Dong(jdguo@imr.ac.cn)
2021-03-03
Source PublicationACTA METALLURGICA SINICA-ENGLISH LETTERS
ISSN1006-7191
Pages10
AbstractIn 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.
KeywordElectric current pulse Superalloys Precipitation Grain size Mechanical properties
Funding OrganizationNational 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
DOI10.1007/s40195-021-01211-7
Indexed BySCI
Language英语
Funding ProjectNational 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 Research AreaMetallurgy & Metallurgical Engineering
WOS SubjectMetallurgy & Metallurgical Engineering
WOS IDWOS:000625092700001
PublisherCHINESE ACAD SCIENCES, INST METAL RESEARCH
Citation statistics
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/161025
Collection中国科学院金属研究所
Corresponding AuthorLiu, Ji-De; Zhang, Xin-Fang; Guo, Jing-Dong
Affiliation1.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
Recommended Citation
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.
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