210 SiC/Ti単繊維複合材料の引張り破壊特性(金属基複合材料)

概要

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In order to discuss the fracture process of mono-composites fabricated by titanium matrix coated on the SiC fiber (SCS-6) by CVD method, tensile test was performed for the mono-composites and the fracture surfaces and the surface of the mono-composites were examined. Two types of relationship between stress and displacement were observed. The one is linear relationship, and the other is non-linear relationship. For the mono-composites having the non-linear load-displacement relationship the second load-displacement curves after first unloading were the same as that for mono-composite having linear relationship. The load-displacement curves for the dissolved fiber of matrix alloys from the mono-composites had linear relationship between load-displacement. In the surface of two mono-composites having non linear relationship many fine cracks were seen and after loaded mono-composites many cracks been extended to the interface between SiC fiber and matrix alloys and debondings were seen at the interfaces. On the other hands, for other the crack and debonding were not observed.
一般社団法人日本機械学会の論文
2006-11-25