| Back stress strengthening and strain hardening in gradient structure | |
Yang MX(杨沐鑫) ; Pan Y; Yuan FP(袁福平); Zhu YT; Wu XL(武晓雷); Wu, XL (reprint author), Chinese Acad Sci, State Key Lab Nonlinear Mech, Inst Mech, 15 Beisihuan West Rd, Beijing 100190, Peoples R China.
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| Source Publication | MATERIALS RESEARCH LETTERS
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| 2016 | |
| Volume | 4Issue:3Pages:145-151 |
| ISSN | 2166-3831 |
| Abstract | We report significant back stress strengthening and strain hardening in gradient structured (GS) interstitial-free (IF) steel. Back stress is long-range stress caused by the pileup of geometrically necessary dislocations (GNDs). A simple equation and a procedure are developed to calculate back stress basing on its formation physics from the tensile unloading-reloading hysteresis loop. The gradient structure has mechanical incompatibility due to its grain size gradient. This induces strain gradient, which needs to be accommodated by GNDs. Back stress not only raises the yield strength but also significantly enhances strain hardening to increase the ductility. [GRAPHICS] . |
| Keyword | Back Stress Geometrically Necessary Dislocations Work Hardening Ductility Gradient Structure |
| DOI | 10.1080/21663831.2016.1153004 |
| URL | 查看原文 |
| Indexed By | SCI ; EI |
| Language | 英语 |
| WOS ID | WOS:000385011000003 |
| WOS Keyword | Back Stress ; Geometrically Necessary Dislocations ; Work Hardening ; Ductility ; Gradient Structure |
| WOS Research Area | Materials Science |
| WOS Subject | Materials Science, Multidisciplinary |
| Funding Organization | This work was supported by the National Natural Science Foundation of China under Grant numbers (11572328, 11072243, 11222224, 11472286, and 51471039) ; and 973 Projects under Grant numbers (2012CB932203, 2012CB937500, and 6138504). Y.T.Z. is funded by the US Army Research Office (W911 NF-12-1-0009), the US National Science Foundation (DMT-1104667), and by the Jiangsu Key Laboratory of Advanced Micro&Nano Materials and Technology, Nanjing Univ of Sci and Technol. |
| Department | LNM材料介观力学性能的表征 |
| Classification | 一类 |
| Ranking | False |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://dspace.imech.ac.cn/handle/311007/59706 |
| Collection | 非线性力学国家重点实验室 |
| Corresponding Author | Wu, XL (reprint author), Chinese Acad Sci, State Key Lab Nonlinear Mech, Inst Mech, 15 Beisihuan West Rd, Beijing 100190, Peoples R China. |
| Recommended Citation GB/T 7714 | Yang MX,Pan Y,Yuan FP,et al. Back stress strengthening and strain hardening in gradient structure[J]. MATERIALS RESEARCH LETTERS,2016,4,3,:145-151. |
| APA | Yang MX,Pan Y,Yuan FP,Zhu YT,Wu XL,&Wu, XL .(2016).Back stress strengthening and strain hardening in gradient structure.MATERIALS RESEARCH LETTERS,4(3),145-151. |
| MLA | Yang MX,et al."Back stress strengthening and strain hardening in gradient structure".MATERIALS RESEARCH LETTERS 4.3(2016):145-151. |
| Files in This Item: | Download All | |||||
| File Name/Size | DocType | Version | Access | License | ||
| a2016-124.pdf（526KB） | 期刊论文 | 作者接受稿 | 开放获取 | CC BY-NC-SA | View Download | |
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