| 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 Author | Liu, Ji-De(jdliu@imr.ac.cn) ; Zhang, Xin-Fang(xfzhang@ustb.edu.cn) ; Guo, Jing-Dong(jdguo@imr.ac.cn) |
| 2021-03-03 | |
| Source Publication | ACTA METALLURGICA SINICA-ENGLISH LETTERS
 |
| ISSN | 1006-7191 |
| Pages | 10 |
| Abstract | 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. |
| Keyword | Electric current pulse Superalloys Precipitation Grain size Mechanical properties |
| Funding Organization | 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 |
| DOI | 10.1007/s40195-021-01211-7 |
| Indexed By | SCI |
| Language | 英语 |
| Funding Project | 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 Research Area | Metallurgy & Metallurgical Engineering |
| WOS Subject | Metallurgy & Metallurgical Engineering |
| WOS ID | WOS:000625092700001 |
| Publisher | CHINESE ACAD SCIENCES, INST METAL RESEARCH |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.imr.ac.cn/handle/321006/161025 |
| Collection | 中国科学院金属研究所 |
| Corresponding Author | Liu, Ji-De; Zhang, Xin-Fang; Guo, Jing-Dong |
| Affiliation | 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 |
| 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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