| Strain rate effects on tensile deformation behaviors for Fe-22Mn-0.6C-(1.5Al) twinning-induced plasticity steel | |
| H. K. Yang; Z. J. Zhang; F. Y. Dong; Q. Q. Duan; Z. F. Zhang | |
| 2014 | |
| Source Publication | Materials Science and Engineering a-Structural Materials Properties Microstructure and Processing
 |
| ISSN | 0921-5093 |
| Volume | 607Pages:551-558 |
| Abstract | In this study, the effect of strain rate on the tensile deformation behavior of Fe-22Mn-0.6C-(1.5Al) (wt%) twinning-induced plasticity (TWIP) steel was investigated. The experimental results indicated that the work hardening exponent (n), ultimate tensile strength (sigma(u)) and the uniform elongation (delta(u)) decreased with increasing strain rates (from 10(-4) to 10(0) s(-1)). This phenomenon exhibited negative strain rate sensitivity (NSRS), and the strain rate sensitivity value (m) was observed to be higher in the aluminum added FeMnC TWIP steel. In order to gain an in-depth understanding of this sensitivity and the subsequent effect of aluminum, the present research focused on the deformation twins and conducted comparative studies on their influence in terms of fractions (F), thickness (t) and spacing (s). Additionally, a twin boundary affected zone (TBAZ) model was proposed, where the relation between higher strain rates were directly applicable to the reduction of interfaces between the matrix and deformation twins. These result indicated that fewer sessile dislocations could be accommodated at high strain rates, thus weakening the work hardening ability. Finally, model calculations were performed to validate the findings, where TBAZ region fractions in FeMnC-Al were observed to be higher than that in FeMnC, corresponding to the increased strain rate sensitivity. (C) 2014 Elsevier B.V. All rights reserved. |
| description.department | [yang, h. k. ; zhang, z. j. ; dong, f. y. ; duan, q. q. ; zhang, z. f.] chinese acad sci, inst met res, shenyang natl lab mat sci, shenyang 110016, peoples r china. ; zhang, zf (reprint author), chinese acad sci, inst met res, shenyang natl lab mat sci, 72 wenhua rd, shenyang 110016, peoples r china. ; zhfzhang@imr.ac.cn |
| Keyword | Twip Steel Strain Rate Deformation Twinning Strength Negative Strain Rate Sensitivity (Nsrs) Stacking-fault Energy Manganese Austenitic Steel c Twip Steel Assisted Multiphase Steels Fcc Copper-alloys Rate Sensitivity Microstructure Evolution Trip/twip Steels Grain-size Multiscale Mechanics |
| URL | 查看原文 |
| Language | 英语 |
| Document Type | 期刊论文 |
| Identifier | http://ir.imr.ac.cn/handle/321006/73466 |
| Collection | 中国科学院金属研究所 |
| Recommended Citation GB/T 7714 | H. K. Yang,Z. J. Zhang,F. Y. Dong,et al. Strain rate effects on tensile deformation behaviors for Fe-22Mn-0.6C-(1.5Al) twinning-induced plasticity steel[J]. Materials Science and Engineering a-Structural Materials Properties Microstructure and Processing,2014,607:551-558. |
| APA | H. K. Yang,Z. J. Zhang,F. Y. Dong,Q. Q. Duan,&Z. F. Zhang.(2014).Strain rate effects on tensile deformation behaviors for Fe-22Mn-0.6C-(1.5Al) twinning-induced plasticity steel.Materials Science and Engineering a-Structural Materials Properties Microstructure and Processing,607,551-558. |
| MLA | H. K. Yang,et al."Strain rate effects on tensile deformation behaviors for Fe-22Mn-0.6C-(1.5Al) twinning-induced plasticity steel".Materials Science and Engineering a-Structural Materials Properties Microstructure and Processing 607(2014):551-558. |
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