Rate-dependent behavior of hierarchical Al matrix composites

H. Zhang; J. Ye; S.P. Joshi

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Rate-dependent behavior of hierarchical Al matrix composites

机译：分层铝基复合材料的速率依赖性行为

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摘要

We present the rate-dependent constitutive response of hierarchical Al matrix composites which comprise a bi-modal distribution of Al in fine (nanocrystalline Al containing micro-sized B_4C particles) and coarse (micro-grained Al) grain regimes. The strength of these composites is improved by various strengthening mechanisms. Shear localization is observed to be the primary failure mode. Compared to quaistatic loading, significant increase of strain to failure is observed at high strain rates. Varying rate-sensitivity is observed with different amount of B_4C particles.

机译：我们介绍了分层铝基复合材料的速率依赖性本构响应，该复合材料包括细（含微晶B_4C颗粒的纳米Al）和粗（微晶Al）晶粒体系中的双峰Al分布。这些复合材料的强度通过各种强化机制得以改善。剪切定位被认为是主要的失效模式。与准静态载荷相比，在高应变率下观察到应变到破坏的显着增加。对于不同数量的B_4C颗粒，观察到不同的速率敏感性。

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《Scripta materialia》 |2008年第10期|共4页
作者
H. Zhang; J. Ye; S.P. Joshi;
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正文语种 eng
中图分类金属学与热处理;
关键词
Hierarchical microstructure; Length-scale effects; Rate-dependent behavior; Metal matrix composite; Strain-to-failure;

机译：分层微观结构;长度尺度效应;速率依赖行为;金属基复合材料;应变失效;

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1. Rate-dependent behavior of hierarchical Al matrix composites [J] . H. Zhang, J. Ye, S.P. Joshi Scripta materialia . 2008,第10期

机译：分层铝基复合材料的速率依赖性行为
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Rate-dependent behavior of hierarchical Al matrix composites

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