Current progress of mechanical properties of metals with nano-scale twins
文献类型：期刊论文
| 作者 | L. Lu |
| 刊名 | Journal of Materials Science & Technology
 |
| 出版日期 | 2008 |
| 卷号 | 24期号:4页码:473-482 |
| ISSN号 | 1005-0302 |
| 关键词 | nanostructured metallic materials twin boundary strengthening ductility rate sensitivity deformation mechanism strain-rate sensitivity ultrafine-grained metals centered-cubic metals nanocrystalline copper nanostructured metals tensile properties nanoscale twins deformation-behavior ultrahigh-strength activation volume |
| 中文摘要 | Focus on face-centered cubic (fcc) metals with nano-scale twins lamellar structure, this paper presents a brief overview of the recent progress made in improving mechanical properties, including strength, ductility, work hardening, strain rate sensitivities, and in mechanistically understanding the underling deformation mechanisms. Significant developments have been achieved in nano-twinned fcc metals with a combination of high strength and considerable ductility at the same time, enhanced work hardening ability and enhanced rate sensitivity. The findings elucidate the role of interactions between dislocations and twin boundaries (TBs) and their contribution to the origin of outstanding properties. The computer simulation analysis accounts for high plastic anisotropy and rate sensitivity anisotropy by treating TBs as internal interfaces and allowing special slip geometry arrangements that involve soft and hard modes of deformation. Parallel to the novel mechanical behaviors of the nano-twinned materials, the investigation and developments of nanocrystalline materials are also discussed in this overview for comparing the contribution of grain boundaries/TBs and grain size/twin lamellar spacing to the properties. The recent advances in the experimental and computational studies of plastic deformation of the fcc metals with nano-scale twin lamellar structures provide insights into the possible means of optimizing comprehensive mechanical properties through interfacial engineering. |
| 原文出处 | |
| 公开日期 | 2012-04-13 |
| 源URL | [http://210.72.142.130/handle/321006/32993]  |
| 专题 | 金属研究所_中国科学院金属研究所 |
| 推荐引用方式 GB/T 7714 | L. Lu. Current progress of mechanical properties of metals with nano-scale twins[J]. Journal of Materials Science & Technology,2008,24(4):473-482. |
| APA | L. Lu.(2008).Current progress of mechanical properties of metals with nano-scale twins.Journal of Materials Science & Technology,24(4),473-482. |
| MLA | L. Lu."Current progress of mechanical properties of metals with nano-scale twins".Journal of Materials Science & Technology 24.4(2008):473-482. |
入库方式： OAI收割
来源：金属研究所
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