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SiC_P/Al复合材料晶面衍射弹性常数的两相模型计算
引用本文:刘力,陈康华,娄瑾,祝昌军.SiC_P/Al复合材料晶面衍射弹性常数的两相模型计算[J].复合材料学报,2017,34(7):1547-1551.
作者姓名:刘力  陈康华  娄瑾  祝昌军
作者单位:1. 中南大学 粉末冶金国家重点实验室, 长沙 410083; 2. 有色金属先进材料协同创新中心, 长沙 410083
基金项目:国家自然科学基金重大科研仪器设备研制专项,国家科技重大专项,国家重点基础研究计划
摘    要:通过分析外载荷作用下,SiCP/Al复合材料中Al基体相和SiC相的相互作用关系,运用自洽方法和Eshelby夹杂理论,建立了一套预测SiCP/Al复合材料"晶面衍射弹性常数"的两相模型。运用该模型计算SiC相和Al相若干晶面的"晶面衍射弹性常数",并与实验测量值进行比对。结果显示,SiC相的{101}及{116}晶面和Al相的{222}晶面的模型计算值均与实验值高度吻合,偏差小于6%。其他晶面的弹性常数值与实验值的偏差均在15%之内。说明该理论模型具有较好的预测性,可靠性较高。通过这一理论预测模型来计算复合材料的"晶面衍射弹性常数"既能避免实验测量的繁琐,减少人力和物力资源浪费,又能得到难以通过实验测量获得的"晶面衍射弹性模量"。

关 键 词:两相模型  晶面衍射弹性常数  金属基复合材料  SiC颗粒  Al  
收稿时间:2016-07-15

Calculation of diffraction elastic constants of SiC particle reinforced aluminum alloy composite by two phase model
LIU Li,CHEN Kanghua,LOU Jin,ZHU Changjun.Calculation of diffraction elastic constants of SiC particle reinforced aluminum alloy composite by two phase model[J].Acta Materiae Compositae Sinica,2017,34(7):1547-1551.
Authors:LIU Li  CHEN Kanghua  LOU Jin  ZHU Changjun
Affiliation:1. State Key Laboratory of Powder Metallurgy, Central South University, Changsha 410083, China; 2. Collaborative Innovation Center of Advanced Nonferrous Structural Materials and Manufacturing, Changsha 410083, China
Abstract:By analyzing the reaction between matrix (Al) and inclusions (SiC) in SiC particle reinforced aluminum alloy composite under uniaxial loading, a two phase model for accumulation of diffraction elastic constants of SiC particle reinforced aluminum alloy composite was built through using self-consistent model and inclusion model.Several diffraction elastic constants of Al phase and SiC phase were figured out by the two phase model.The results calculated by the two phase model of {101} and {116} of SiC and {222} of Al are all highly coincided with test results, which give only a difference of less than 6%.And the others show difference of less than 15%.All results show the theoretical model is reliable and can predict accurately.This kind of predict model can not only avoid the tedious experiment and save the money, but also can make accurate predictions of some materials difficult to test.
Keywords:two phase model  diffraction elastic constants  metal matrix composite  SiC particles  Al
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