| A numerical study of grain size effects on the strength and elongation of Al polycrystals using strain gradient plasticity theory |
| L. Zhou; S. X. Li; W. Ke
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| 2008
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| 发表期刊 | International Journal of Materials Research
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| ISSN | 1862-5282
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| 卷号 | 99期号:2页码:191-196 |
| 摘要 | By incorporating the constitutive equations based on classical plasticity and the mechanism-based strain gradient plasticity with finite element software, the stress-strain relationships and uniform elongations of Al polycrystals with different grain sizes were studied numerically. The calculation results indicate that grain refinement cannot substantially improve the uniform elongation but can increase the yield strength of Al polycrystals when the grain size is of the order of the micron and submicron scale. The Hall-Petch relationship for yield strength holds and the uniform elongation decreases with decreasing grain size. The calculation results in general agree well with the experiment data. |
| 部门归属 | [zhou, l.] shenyang ligong univ, dept mech engn, shenyang 110168, peoples r china. [zhou, l.; li, s. x.] cas, imr, shenyang natl lab mat sci, shenyang, peoples r china. [ke, w.] cas, imr, state key lab corros & protect, shenyang, peoples r china.;zhou, l (reprint author), shenyang ligong univ, dept mech engn, shenyang 110168, peoples r china;lizhou@imr.ac.cn
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| 关键词 | Strain Gradient Plasticity
Classical Plasticity
Finite Element Method
Al polycrystAls
Size Effect
Matrix Composites
Particle-size
Length Scale
Aluminum
Deformation
Ductility
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| URL | 查看原文
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| WOS记录号 | WOS:000253543900009
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| 引用统计 |
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| 文献类型 | 期刊论文
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| 条目标识符 | http://ir.imr.ac.cn/handle/321006/33389
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| 专题 | 中国科学院金属研究所
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推荐引用方式
GB/T 7714 |
L. Zhou,S. X. Li,W. Ke. A numerical study of grain size effects on the strength and elongation of Al polycrystals using strain gradient plasticity theory[J]. International Journal of Materials Research,2008,99(2):191-196.
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| APA |
L. Zhou,S. X. Li,&W. Ke.(2008).A numerical study of grain size effects on the strength and elongation of Al polycrystals using strain gradient plasticity theory.International Journal of Materials Research,99(2),191-196.
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| MLA |
L. Zhou,et al."A numerical study of grain size effects on the strength and elongation of Al polycrystals using strain gradient plasticity theory".International Journal of Materials Research 99.2(2008):191-196.
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