Optimal stress and deformation partition in gradient materials for better strength and tensile ductility: A numerical investigation
文献类型：期刊论文
| 作者 | Wang, Yao; Yang, Guangxue; Wang, Wenjing; Wang, Xi; Li, Qiang ; Wei YJ(魏宇杰); Li, Q (reprint author), Beijing Jiaotong Univ, Minist Educ, Key Lab Vehicle Adv Mfg Measuring & Control Techn, Beijing 100044, Peoples R China.; Wei, YJ (reprint author), Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech LNM, Beijing 100190, Peoples R China.
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| 刊名 | SCIENTIFIC REPORTS
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| 出版日期 | 2017-09-08 |
| 卷号 | 7 |
| ISSN号 | 2045-2322 |
| DOI | 10.1038/s41598-017-10941-7 |
| 文献子类 | Article |
| 英文摘要 | Inspired by recent progress in developing gradient materials with excellent performances, here we report a systematic finite-element based investigation to show how the strength and tensile ductility of gradient crystalline metals depend on their microstructure characteristics. We reveal that the yielding strength of polycrystalline metals with gradient grain size can be significantly enhanced at no reduction in ductility. By employing a representative 3D voronoi gradient sample, we demonstrate that the redistribution of stress and deformation in the gradient structure - stronger grains carry more load and ductile ones share more deformation - accounts for the realized optimal property in strength and ductility. In addition, the hardenability of the ductile domain is beneficial to circumvent pre-mature plastic instability in gradient samples. |
| 分类号 | 一类 |
| URL标识 | 查看原文 |
| WOS关键词 | GRAIN-SIZE GRADIENT ; VOID NUCLEATION ; PLASTICITY ; COPPER ; FRACTURE ; STEELS |
| WOS研究方向 | Science & Technology - Other Topics |
| 语种 | 英语 |
| WOS记录号 | WOS:000409841100016 |
| 资助机构 | National Natural Science Foundation of China (NSFC)(11425211) ; Strategic Priority Research Program of the Chinese Academy of Sciences(XDB22020200) ; Basic Scientific Research Foundation of Beijing Jiaotong University(M14JB00130) |
| 源URL | [http://dspace.imech.ac.cn/handle/311007/70048]  |
| 专题 | 力学研究所_非线性力学国家重点实验室 |
| 通讯作者 | Li, Q (reprint author), Beijing Jiaotong Univ, Minist Educ, Key Lab Vehicle Adv Mfg Measuring & Control Techn, Beijing 100044, Peoples R China.; Wei, YJ (reprint author), Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech LNM, Beijing 100190, Peoples R China. |
| 推荐引用方式 GB/T 7714 | Wang, Yao,Yang, Guangxue,Wang, Wenjing,et al. Optimal stress and deformation partition in gradient materials for better strength and tensile ductility: A numerical investigation[J]. SCIENTIFIC REPORTS,2017,7. |
| APA | Wang, Yao.,Yang, Guangxue.,Wang, Wenjing.,Wang, Xi.,Li, Qiang.,...&Wei, YJ .(2017).Optimal stress and deformation partition in gradient materials for better strength and tensile ductility: A numerical investigation.SCIENTIFIC REPORTS,7. |
| MLA | Wang, Yao,et al."Optimal stress and deformation partition in gradient materials for better strength and tensile ductility: A numerical investigation".SCIENTIFIC REPORTS 7(2017). |
入库方式： OAI收割
来源：力学研究所
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