Effects of Hafnium on Mechanical Properties and Fracture Mode in FGH4097 Powder Metallurgy Superalloy

摘要：

　　The effects of Hafnium with different contents on mechanical properties including impact ductility,tensile properties,stress rupture properties and fatigue crack propagation rate in FGH4097 alloy have been investigated.The results showed that proper Hf content plays a beneficial role in improving the comprehensive mechanical properties of FGH4097 alloy,which helps improve mechanical properties,including,tensile plasticity,stress rupture life,and fatigue crack propagation resistance,also helps decrease notch sensitivity.FGH4097 alloy with 0.30wt%Hf content presents the optimum comprehensive mechanical properties.

关键词： PM superalloy FGH4097 Hafnium mechanical properties

作者: Zhang Yiwen Han Shoubo Jia Jian Liu Jiantao Yu Hongyao Hu Benfu

作者单位: High Temperature Materials Research Institute,China Iron & Steel Research Institute Group,Beijing 10 School of Materials Science and Engineering,University of Science and Technology Beijing,Beijing 100

会议类型: 国际会议

会议名称: 2018世界粉末冶金大会

会议地点: 北京

会议语种:英文

页码: 1027-1036

在线出版日期: 2018-09-16（万方平台首次上网日期，不代表论文的发表时间）