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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)
发表期刊METALS
2018
卷号8期号:1页码:11
ISSN2075-4701
摘要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.
关键词high specific strength steel strain rate effect intermediate strain rates strain partitioning deformation twins
DOI10.3390/met8010011
URL查看原文
收录类别SCI
语种英语
WOS记录号WOS:000427529100011
关键词[WOS]DUAL-PHASE STEELS ; MECHANICAL-BEHAVIOR ; WIDE-RANGE ; TWIP STEEL ; TRIP/TWIP STEELS ; RATE SENSITIVITY ; GRAINED FE ; AL CONTENT ; DEFORMATION ; TRIP
WOS研究方向Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
WOS类目Materials Science ; Metallurgy & Metallurgical Engineering
项目资助者National Key R&D Program of China [2017YFA0204402] ; NSFC [11672313, 11472286, 11572328, 51701228, 51601204] ; Chinese Academy of Sciences [XDB22040503]
论文分区二类
力学所作者排名1
引用统计
被引频次:1[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://dspace.imech.ac.cn/handle/311007/77887
专题非线性力学国家重点实验室
作者单位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
推荐引用方式
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.
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