Strain hardening in Fe-16Mn-10Al-0.86C-5Ni high specific strength steel | |
Yang MX(杨沐鑫); Yuan FP(袁福平); Xie QG; Wang YD; Ma E; Wu XL(武晓雷) | |
发表期刊 | ACTA MATERIALIA |
2016-05 | |
卷号 | 109页码:213-22 |
ISSN | 1359-6454 |
摘要 |
We report a detailed study of the strain hardening behavior of a Fe-16Mn-10Al-0.86C-5Ni (weight percent) high specific strength (i.e. yield strength-to-mass density ratio) steel (HSSS) during uniaxial tensile deformation. The dual-phase (γ-austenite and B2 intermetallic compound) HSSS possesses high yield strength of 1.2-1.4 GPa and uniform elongation of 18-34%. The tensile deformation of the HSSS exhibits an initial yield-peak, followed by a transient characterized by an up-turn of the strain hardening rate. Using synchrotron based high-energy in situ X-ray diffraction, the evolution of lattice strains in both the γ and B2 phases was monitored, which has disclosed an explicit elasto-plastic transition through load transfer and strain partitioning between the two phases followed by co-deformation. The unloading-reloading tests revealed the Bauschinger effect: During unloading yield in γ occurs even when the applied load is still in tension. The extraordinary strain hardening rate can be attributed to the high back stresses that arise from the strain incompatibility caused by the microstructural heterogeneity in the HSSS. © 2016 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved. (65 refs) |
DOI | 10.1016/j.actamat.2016.02.044 |
收录类别 | SCI ; EI |
语种 | 英语 |
WOS记录号 | WOS:000374617600021 |
项目资助者 | National Natural Science Foundation of China (NSFC) 11572328 11072243 11222224 11472286 973 Programs 2012CB932203 2012CB937500 6138504 U.S.-DOE-BES, Division of Materials Sciences and Engineering DE-FG02-09ER46056 |
课题组名称 | LNM材料介观力学性能的表征 |
论文分区 | 一类 |
力学所作者排名 | True |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://dspace.imech.ac.cn/handle/311007/60683 |
专题 | 非线性力学国家重点实验室 |
推荐引用方式 GB/T 7714 | Yang MX,Yuan FP,Xie QG,et al. Strain hardening in Fe-16Mn-10Al-0.86C-5Ni high specific strength steel[J]. ACTA MATERIALIA,2016,109:213-22. |
APA | Yang MX,Yuan FP,Xie QG,Wang YD,Ma E,&Wu XL.(2016).Strain hardening in Fe-16Mn-10Al-0.86C-5Ni high specific strength steel.ACTA MATERIALIA,109,213-22. |
MLA | Yang MX,et al."Strain hardening in Fe-16Mn-10Al-0.86C-5Ni high specific strength steel".ACTA MATERIALIA 109(2016):213-22. |
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