Creep damage mechanisms in Ni-base superalloys focusing on the distribution of alloying elements in γ and γ phases

摘要：

Owing to their excellent high temperature strength and oxidation resistance, directionally solidified Ni-based superalloys have been used widely for blades in land-based gas turbines. Due to the centrifugal force that acts on the blades during operation at high temperatures, severe directional coarsening, so- called rafting, of the initially cuboidal γ particles into plate-like structures can occur locally. It has been shown that raft structures develop during high temperature creep. Several

关键词： Ni base superalloy Creep damage γ and γ phases Atomic distribution

作者: Kazuhiro Ogawa Takahiro Niki Kohei Nobusawa Tetsuo Shoji

作者单位: Fracture and Reliability Research Institute, 6-6-11-718, Aoba, Aramaki, Aoba-ku, Sendai 980-8579, Japan

会议类型: 国际会议

会议名称: 国际断裂力学2007年会(Fracture Mechanics and Applications 2007)

会议地点: 长沙

会议语种:英文

页码: 35-38

在线出版日期: 2007-11-01（万方平台首次上网日期，不代表论文的发表时间）