Fracture Toughness of SiCf/Ti-6Al-4V Composites

摘要：

The apparent fracture toughness of the Ti-6Al-4V composites uniaxially reinforced with SiC fibers was measured by the three-point bend test and the effect of the interfacial reaction on the toughness was discussed. It was pointed out that bridging of the intact fibers in the plastic zone ahead of the crack tip plays an important role in the fracture toughness of the composites. And the fracture toughness of the heat-treated composites decreases due to the severe interfacial reaction that leads to the damage of the SiC fibers and therefore the decrease of the load-bearing ability, and to the increase of the brittleness in the titanium matrix.

关键词： SiC fiber Ti-6Al-4V composite fracture toughness bridging interfacial reaction

作者: YANG Yan-qing LI Jian-kang LUO Xian HUANG Bin CHEN Yan

作者单位: School of Materials,State Key Lab of Solidification Processing,Northwestern Polytechnical University,Xian 710072,.China

会议类型: 国际会议

会议名称: The Fourth Asian Conference on Heat Treatment and Surface Engineering(第四届亚洲热处理及表面工程大会)

会议地点: 北京

会议语种:英文

页码: 159-162

在线出版日期: 2009-10-27（万方平台首次上网日期，不代表论文的发表时间）