| Effect of cold rolling on microstructure, texture, and tensile properties of a Ni-Fe-based superalloy | |
| Wang, Jiaqi1,2; Cheng, Sihan1,2; Wu, Yunsheng2,3; Wang, Tingting4; Qin, Xuezhi2,3; Zhou, Lanzhang2,3 | |
| Corresponding Author | Qin, Xuezhi(xzqin@imr.ac.cn) ; Zhou, Lanzhang(lzz@imr.ac.cn) |
| 2023-03-15 | |
| Source Publication | JOURNAL OF ALLOYS AND COMPOUNDS
 |
| ISSN | 0925-8388 |
| Volume | 937Pages:14 |
| Abstract | In this work, the effect of cold rolling on microstructure, texture, and tensile properties of a Ni-Fe-based superalloy for Generation IV nuclear reactor application was systematically investigated. The results show that different deformed microstructures were observed during cold rolling, including dislocation tangles, slip bands, and microtwins (MTs). The dominant cold rolling deformation mechanism of the alloy gradually changed from planar slipping to deformation twinning, which was a little different from Ni-/Co-based superalloys. A texture transition from Copper {1121 < 111 > to Brass {1101 < 112 > and Goss {1101 < 001 > at 25 % rolling reduction was detected due to the changed deformation mechanism. The standard heat treatment alloy exhibited a yield strength of 213 MPa and good elongation of 54 %. By in-creasing the rolling reduction up to 55 %, the yield strength was significantly enhanced to 872 MPa, which was attributed to the combined strengthening from both MTs and dislocations. Fine-spaced MTs with co-herent interfaces can impede dislocation motion effectively and play a critical role in the strengthening, contributing 75-235 MPa to the yield strength. MTs can also provide ample room for dislocation accu-mulation, which maintained a reasonable elongation of 12 %. Moreover, due to the texture evolution during cold rolling, the averaged Schmid factor (SF) values for {1111 < 110 > slip system exhibited a decreasing trend with the increased rolling reduction, contributing to the progressive increase in yield strength. The present work demonstrates that the formation of MTs at high rolling reductions is an essential reason for the improvement of mechanical properties of the alloy, which also provides a new strategy for designing and optimizing high-performance solid-solution strengthened Ni-Fe-based superalloys.(c) 2022 Elsevier B.V. All rights reserved. |
| Keyword | Ni-Fe-based superalloy Cold rolling Microstructure Texture Strength Deformation twinning |
| Funding Organization | National Natural Science Foundation of China ; China Postdoctoral Science Foundation |
| DOI | 10.1016/j.jallcom.2022.168383 |
| Indexed By | SCI |
| Language | 英语 |
| Funding Project | National Natural Science Foundation of China ; China Postdoctoral Science Foundation ; [51871213] ; [2020M681000] |
| WOS Research Area | Chemistry ; Materials Science ; Metallurgy & Metallurgical Engineering |
| WOS Subject | Chemistry, Physical ; Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering |
| WOS ID | WOS:000900167100003 |
| Publisher | ELSEVIER SCIENCE SA |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.imr.ac.cn/handle/321006/175790 |
| Collection | 中国科学院金属研究所 |
| Corresponding Author | Qin, Xuezhi; Zhou, Lanzhang |
| Affiliation | 1.Univ Sci & Technol China, Sch Mat Sci & Engn, Shenyang 110016, Peoples R China 2.Chinese Acad Sci, Inst Met Res, Shi Changxu Innovat Ctr Adv Mat, Shenyang 110016, Peoples R China 3.Chinese Acad Sci, Inst Met Res, CAS Key Lab Nucl Mat & Safety Assessment, Shenyang 110016, Peoples R China 4.Baowu Special Met Co Ltd, Shanghai 200940, Peoples R China |
| Recommended Citation GB/T 7714 | Wang, Jiaqi,Cheng, Sihan,Wu, Yunsheng,et al. Effect of cold rolling on microstructure, texture, and tensile properties of a Ni-Fe-based superalloy[J]. JOURNAL OF ALLOYS AND COMPOUNDS,2023,937:14. |
| APA | Wang, Jiaqi,Cheng, Sihan,Wu, Yunsheng,Wang, Tingting,Qin, Xuezhi,&Zhou, Lanzhang.(2023).Effect of cold rolling on microstructure, texture, and tensile properties of a Ni-Fe-based superalloy.JOURNAL OF ALLOYS AND COMPOUNDS,937,14. |
| MLA | Wang, Jiaqi,et al."Effect of cold rolling on microstructure, texture, and tensile properties of a Ni-Fe-based superalloy".JOURNAL OF ALLOYS AND COMPOUNDS 937(2023):14. |
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