Explaining Deviatoric Residual Stresses in Aluminum Matrix Composites with Complex Microstructure

Explaining Deviatoric Residual Stresses in Aluminum Matrix Composites with Complex Microstructure
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解释具有复杂微观结构的铝基复合材料中的偏残余应力

DOI:
10.1007/s11661-020-05697-1
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发表时间:
2020
期刊:
Metallurgical and Materials Transactions A
影响因子:
--
通讯作者:
G. Bruno
G. Bruno
中科院分区:
--
文献类型:
--
作者:
S. Evsevleev;I. Sevostianov;T. Mishurova;M. Hofmann;G. Garcés;G. Bruno

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采用中子衍射法和基于经典麦克斯韦均匀化方法的模型,研究了含有随机平面取向短纤维和颗粒的多相金属基复合材料的残余应力。与普遍理解和最先进的模型相反,我们实验观察到随机取向的相具有非静水残余应力。最近发展起来的模拟方法可以计算复合材料各相的残余应力.它合理化的存在下的偏应力占的相互作用的随机取向相具有优先取向的纤维。
The residual stresses in multiphase metal matrix composites with both random planar-oriented short fibers and particles were studied by neutron diffraction and by a model based on the reformulation of classic Maxwell’s homogenization method. Contrary to common understanding and state-of-the-art models, we experimentally observed that randomly oriented phases possess non-hydrostatic residual stress. The recently developed modeling approach allows calculating the residual stress inallphases of the composites. It rationalizes the presence of deviatoric stresses accounting for the interaction of random oriented phases with fibers having preferential orientation.
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