| Strain Rate Effect on Tensile Behavior for a High Specific Strength Steel: From Quasi-Static to Intermediate Strain Rates | |
Wang W(王雯) ; Ma Y(马彦); Yang MX(杨沐鑫); Jiang P(姜萍); Yuan FP(袁福平); Wu XL(武晓雷)
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| Source Publication | METALS
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| 2018 | |
| Volume | 8Issue:1Pages:11 |
| ISSN | 2075-4701 |
| Abstract | The strain rate effect on the tensile behaviors of a high specific strength steel (HSSS) with dual-phase microstructure has been investigated. The yield strength, the ultimate strength and the tensile toughness were all observed to increase with increasing strain rates at the range of 0.0006 to 56/s, rendering this HSSS as an excellent candidate for an energy absorber in the automobile industry, since vehicle crushing often happens at intermediate strain rates. Back stress hardening has been found to play an important role for this HSSS due to load transfer and strain partitioning between two phases, and a higher strain rate could cause even higher strain partitioning in the softer austenite grains, delaying the deformation instability. Deformation twins are observed in the austenite grains at all strain rates to facilitate the uniform tensile deformation. The B2 phase (FeAl intermetallic compound) is less deformable at higher strain rates, resulting in easier brittle fracture in B2 particles, smaller dimple size and a higher density of phase interfaces in final fracture surfaces. Thus, more energy need be consumed during the final fracture for the experiments conducted at higher strain rates, resulting in better tensile toughness. |
| Keyword | high specific strength steel strain rate effect intermediate strain rates strain partitioning deformation twins |
| DOI | 10.3390/met8010011 |
| URL | 查看原文 |
| Indexed By | SCI |
| Language | 英语 |
| WOS ID | WOS:000427529100011 |
| WOS Keyword | DUAL-PHASE STEELS ; MECHANICAL-BEHAVIOR ; WIDE-RANGE ; TWIP STEEL ; TRIP/TWIP STEELS ; RATE SENSITIVITY ; GRAINED FE ; AL CONTENT ; DEFORMATION ; TRIP |
| WOS Research Area | Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering |
| WOS Subject | Materials Science ; Metallurgy & Metallurgical Engineering |
| Funding Organization | National Key R&D Program of China [2017YFA0204402] ; NSFC [11672313, 11472286, 11572328, 51701228, 51601204] ; Chinese Academy of Sciences [XDB22040503] |
| Classification | 二类 |
| Ranking | 1 |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://dspace.imech.ac.cn/handle/311007/77887 |
| Collection | 非线性力学国家重点实验室 |
| Affiliation | 1.Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech, 15,North 4th Ring,West Rd, Beijing 100190, Peoples R China 2.Univ Chinese Acad Sci, Sch Engn Sci, Beijing 100190, Peoples R China |
| Recommended Citation GB/T 7714 | Wang W,Ma Y,Yang MX,et al. Strain Rate Effect on Tensile Behavior for a High Specific Strength Steel: From Quasi-Static to Intermediate Strain Rates[J]. METALS,2018,8,1,:11. |
| APA | 王雯,马彦,杨沐鑫,姜萍,袁福平,&武晓雷.(2018).Strain Rate Effect on Tensile Behavior for a High Specific Strength Steel: From Quasi-Static to Intermediate Strain Rates.METALS,8(1),11. |
| MLA | 王雯,et al."Strain Rate Effect on Tensile Behavior for a High Specific Strength Steel: From Quasi-Static to Intermediate Strain Rates".METALS 8.1(2018):11. |
| Files in This Item: | Download All | |||||
| File Name/Size | DocType | Version | Access | License | ||
| IrJ2018275.pdf（6000KB） | 期刊论文 | 出版稿 | 开放获取 | CC BY-NC-SA | View Download | |
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