Plastic deformation mechanisms in a severely deformed Fe-Ni-Al-C alloy with superior tensile properties | |
Ma Y(马彦); Yang MX(杨沐鑫); Jiang P(姜萍); Yuan FP(袁福平); Wu XL(武晓雷); Yuan, FP (reprint author), Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech, Beijing 100190, Peoples R China. | |
发表期刊 | SCIENTIFIC REPORTS |
2017-11-15 | |
卷号 | 7页码:10.1038/s41598-017-15905-5 |
ISSN | 2045-2322 |
摘要 | Nanostructured metals have high strength while they usually exhibit limited uniform elongation. While, a yield strength of approximately 2.1 GPa and a uniform elongation of about 26% were achieved in a severely deformed Fe-24.8% Ni-6.0% Al-0.38% C alloy in the present work. The plastic deformation mechanisms for the coarse-grained (CG) sample and the cold-rolled (CR) samples of this alloy were investigated by a series of mechanical tests and microstructure characterizations before and after tensile tests. No obvious phase transformation was observed during the tensile deformation for the CG sample, and the plastic deformation was found to be mainly accommodated by deformation twins and dislocation behaviors. While significant phase transformation occurs for the CR samples due to the facts that the deformed grains by CR are insufficient to sustain the tensile deformation themselves and the flow stress for the CR samples is high enough to activate the martensite transformation. The amount of phase transformation increases with increasing thickness reduction of CR, resulting in excellent tensile ductility in the severely deformed alloy. The back stress hardening was found to play a more important role in the CR samples than in the CG sample due to the dynamically reinforced heterogeneous microstructure by phase transformation. |
DOI | 10.1038/s41598-017-15905-5 |
收录类别 | SCI |
语种 | 英语 |
WOS记录号 | WOS:000415265800030 |
关键词[WOS] | TRANSFORMATION-INDUCED PLASTICITY ; HIGH-STRENGTH ; INTERNAL-STRESSES ; MAXIMUM STRENGTH ; LARGE DUCTILITY ; STEELS ; GRADIENT ; METALS ; MICROSTRUCTURE ; BEHAVIORS |
WOS研究方向 | Science & Technology - Other Topics |
WOS类目 | Multidisciplinary Sciences |
项目资助者 | National Key R&D Program of China(2017YFA0204402) ; NSFC(11572328 ; Strategic Priority Research Program of the Chinese Academy of Sciences(XDB22040503) ; 11472286 ; 11672313) |
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 | 1 |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://dspace.imech.ac.cn/handle/311007/71932 |
专题 | 非线性力学国家重点实验室 |
通讯作者 | Yuan, FP (reprint author), Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech, Beijing 100190, Peoples R China. |
推荐引用方式 GB/T 7714 | Ma Y,Yang MX,Jiang P,et al. Plastic deformation mechanisms in a severely deformed Fe-Ni-Al-C alloy with superior tensile properties[J]. SCIENTIFIC REPORTS,2017,7:10.1038/s41598-017-15905-5. |
APA | Ma Y,Yang MX,Jiang P,Yuan FP,Wu XL,&Yuan, FP .(2017).Plastic deformation mechanisms in a severely deformed Fe-Ni-Al-C alloy with superior tensile properties.SCIENTIFIC REPORTS,7,10.1038/s41598-017-15905-5. |
MLA | Ma Y,et al."Plastic deformation mechanisms in a severely deformed Fe-Ni-Al-C alloy with superior tensile properties".SCIENTIFIC REPORTS 7(2017):10.1038/s41598-017-15905-5. |
条目包含的文件 | 下载所有文件 | |||||
文件名称/大小 | 文献类型 | 版本类型 | 开放类型 | 使用许可 | ||
JouArt-2017-183.pdf(3421KB) | 期刊论文 | 作者接受稿 | 开放获取 | CC BY-NC-SA | 浏览 下载 |
除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。
修改评论