IMECH-IR  > 非线性力学国家重点实验室
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)
Source PublicationACTA MATERIALIA
2016-05
Volume109Pages:213-22
ISSN1359-6454
Abstract
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) 
DOI10.1016/j.actamat.2016.02.044
Indexed BySCI ; EI
Language英语
WOS IDWOS:000374617600021
Funding OrganizationNational 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
DepartmentLNM材料介观力学性能的表征
Classification一类
RankingTrue
Citation statistics
Document Type期刊论文
Identifierhttp://dspace.imech.ac.cn/handle/311007/60683
Collection非线性力学国家重点实验室
Recommended Citation
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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