作者
MM Aghdam, SR Morsali
发表日期
2014/8/1
期刊
Computational materials science
卷号
91
页码范围
62-67
出版商
Elsevier
简介
A three-dimensional micromechanical model is developed to study the effects of manufacturing process and fiber volume fraction (FVF) on the thermal residual stresses (RS) in SiC/Ti–6Al–4V metal matrix composite (MMC). The model includes the effects of coating, interaction layer and stress relaxation. Effects of stress relaxation are considered by incorporating appropriate creep law for the Titanium matrix. In this paper, attention is focused on manufacturing procedure dependent variable which influences global behavior of the MMC. Predictions made by the presented finite element model show acceptable correlation with the reported experimental data. Results reveal that viscoplastic behavior of the matrix has significant effects on the residual stresses at cooling rates lower than 10 °C/s. Results show that high value of FVF and manufacturing temperature leads to high state of RS within the composite. For these …
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