Circular nano-indentation in particle-reinforced metal matrix composites: Simply uniformly distributed particles lead to complex nano-indentation response
Circular nano-indentation in particle-reinforced metal matrix composites: Simply uniformly distributed particles lead to complex nano-indentation response
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颗粒增强金属基复合材料中的圆形纳米压痕：简单均匀分布的颗粒会导致复杂的纳米压痕响应
DOI：
10.1016/j.commatsci.2009.11.027
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发表时间：
2010-02
影响因子：
3.3
通讯作者：
Li, Zhenhuan
中科院分区：
文献类型：
--
作者：
Huang, Minsheng;Ouyang, Chaojun;Hu, Lili;Li, Zhenhuan
结合ANSYS有限元软件，对铝基SiC颗粒增强金属基复合材料（PR-MMCs）在二维离散位错塑性作用下的压痕响应进行了数值分析。详细讨论了公称硬度HNon对颗粒尺寸、颗粒面积分数、压头与颗粒之间的基体厚度、压痕位置以及颗粒形状等多种因素的依赖关系。本文表明，PR-MMCs的纳米压痕响应与PR-MMCs的颗粒面积分数以及阻止基体内无位错滑动密切相关。在高颗粒面积分数为25%时，由于颗粒对位错滑动的阻挡作用增强，随着颗粒尺寸的减小，hns增大。然而，在9%的低颗粒面积分数下，可以观察到hni的反向依赖，这是由于在基体中形成了长自由滑移带。
The indentation response of aluminum–matrix SiC particle-reinforced metal matrix composites (PR-MMCs) impressed by a circular indenter has been numerically analyzed under the two-dimensional discrete dislocation plasticity combined with the ANSYS® finite element software. Dependence of the nominal hardness HNon multiple factors, including the particle size, the particle area fraction, the matrix thickness between the indenter and the particle, the indentation location as well as the particle shape, is addressed in detail. Herein, we show that the nano-indentation response of the PR-MMCs is strongly associated with the particle area fraction of PR-MMCs as well as the blocking of dislocation free gliding within the matrix. At a high particle area fraction of 25%, HNincreases with the decrease of the particle size due to the increasing blocking effect of particles on the dislocation gliding. However, at a low particle area fraction of 9%, a reverse dependence of HNcould be observed, which is attributed to the formation of long free-slip bands in the matrix.
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DOI：
10.1016/0956-716x(94)90147-3
发表时间：
1994-09
期刊：
Scripta Metallurgica Et Materialia
影响因子：
--
作者：
J. Leggoe;X. Hu;M. Swain;M. Bush
通讯作者：
J. Leggoe;X. Hu;M. Swain;M. Bush
DOI：
10.1016/s0921-5093(00)01256-9
发表时间：
2001-01
影响因子：
6.4
作者：
Yu‐Lin Shen;N. Chawla
通讯作者：
Yu‐Lin Shen;N. Chawla
影响因子：
9.8
作者：
G. Hu
通讯作者：
G. Hu
DOI：
10.1007/bf02669616
发表时间：
1993
期刊：
Metallurgical Transactions A
影响因子：
--
作者：
Zhirui Wang;Tzikang Chen;D. Lloyd
通讯作者：
Zhirui Wang;Tzikang Chen;D. Lloyd
影响因子：
9.1
作者：
Dai, LH;Ling, Z;Bai, YL
通讯作者：
Bai, YL