Effects of Fiber Volume Fraction on Transverse Tensile Properties of SiC/Ti-6Al-4V Composites

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• 作者：Lou Juhong ; ^a ; ^{fxj815@163.com"" rel=""nofollow} ; Yang Yanqing ; ^a ; Luo Xian^a ; Feng Guanghai^a ; Zhang Wei^a
• 关键词：titanium matrix composites ; transverse properties ; fiber volume fraction ; finite element analysis
• 刊名：Rare Metal Materials and Engineering
• 出版年：2011
• 出版时间：April 2011
• 年：2011
• 卷：40
• 期：4
• 页码：575-579
• 全文大小：153 K

文摘

The transverse tensile properties of SiC/Ti-6Al-4V composites, subjected to both residual stress and applied transverse stress, have been investigated with emphasis on effects of fiber volume fractions by finite element analysis. Coincident nodes at fiber/matrix interfaces were connected by springs to simulate interfacial debonding. The results indicate that the applied stresses required to cause interfacial debonding (corresponding to strain jumps in stress-strain curves) are mainly affected by interfacial residual radial stresses at θ=0° under fixed interfacial bonding strength. The collapse stresses (corresponding to horizontal parts in stress-strain curves) of the composites, however, are a function of fiber volume fractions. Furthermore, the lower the fiber volume fractions are, the higher the collapse stresses are.