Influence of Microstructure on Fatigue Crack Propagation and Fracture Toughness of Large Ti-6Al-4V Cast Structure
The study is part of research activities for EU-China FP7 collaborative project (FP7-AAT-2010-RTD-CHINA):Casting of Large Ti Structures (COLTS) and has been carried out in order to investigate the influence of microstructure of cast Ti-6Al-4V large thin wall structure on fatigue crack propagation and fracture toughness.Some samples were post HIPped (hot isostatic pressed).The effects of grain morphology on fracture and fatigue crack propagation mechanism have also been studied.The fracture surface has been examined using scanning electron microscopy (SEM).The relationships between microstructure and fatigue crack propagation rate and fracture toughness were established and comparison has been made between the as-cast and post HIPped conditions.
Ti-6Al-4V alloy Hot isostatic pressing Fracture toughness Fatigue crack growth
Xin Feng Anqi Wang Yingjie Ma Xinhua Wu Jiafeng Lei Yuyou Cui Rui Yang
Institute of Metal Research,Chinese Academy of Sciences,72 Wenhua Road,Shenyang 110016,China FalconTech,99 Hongshan Street,The New District,Wuxi 214145,China Department of Materials Engineering,Monash University,Wellington Road,Clayton,Victoria 3800,Australi
国际会议
北京
英文
1-7
2013-06-16（万方平台首次上网日期，不代表论文的发表时间）