Coarsening behavior of γ' particles in a nickel-base superalloy  

作　　者：Li, Hongyu  Zuo, Lingli  Song, Xiping  Wang, Yanli  Chen, Guoliang 

机构地区：[1] State Key Laboratory for Advanced Metals and Materials, University of Science and Technology Beijing, Beijing 100083, China

出　　处：《Rare Metals》2009年第2期197-201,共5页稀有金属（英文版）

基　　金：the National Natural Science Foundation of China (No. 50471097);the Programme of Introducing Talents of Discipline to Chinese Universities (No. B07003).

摘　　要：The coarsening behavior of γ particles in a nickel-base superalloy FGH95 was investigated by means of experimental observations and growth kinetics calculations. The results show that when aging at 1000,1080 and 1140°C for different times,the relation of average particle size to time obeys the cube law ( a /2)3= kt,where k is 15.49 × 103,77.5 × 103 and 230.04 × 103 nm3/min,respectively. The particle size distributions are better fit to the LSW theoretical distributions when aging at 1000°C within 1440 min....The coarsening behavior of γ particles in a nickel-base superalloy FGH95 was investigated by means of experimental observations and growth kinetics calculations. The results show that when aging at 1000,1080 and 1140°C for different times,the relation of average particle size to time obeys the cube law ( a /2)3= kt,where k is 15.49 × 103,77.5 × 103 and 230.04 × 103 nm3/min,respectively. The particle size distributions are better fit to the LSW theoretical distributions when aging at 1000°C within 1440 min....

关 键 词：nickel-base superalloys γ particles coarsening behavior particle size distribution activation energy 

分 类 号：TG132.32[一般工业技术—材料科学与工程]