GH141合金的显微组织控制.pdfVIP

14 1 GH 7 GH141 - 141 M icrostructures Control in Ni base Superalloy GH 1 2 2 3 2 , , , , ( 1 , 100095; 2 , 11000 ; 3 , 100081) 1 2 2 3 2 YU Hui-chen , XIE Shi-shu , LU Jun-ying , ZHAO Guang-pu , YANG Hong-Cai ( 1 Institute of Aeronautical M ateials, Beijing 100095, China; 2 Northeastern University Shenyang, 11000 , China; 3 Central Iron Steel Research Institute Beijing, 100081, China) : 141 , GH 7 0900 , , Ostw ald, 27 . 8kJ/ mol : ; ; ; ; + : T G 14 . 1 5; T G 113. 12: A : 1001-4381 ( 2003) 05-0007-04 Abstract : T he effects of heat treatment on microstructures in Ni-base superalloy GH141w ere inves- . tigated The results show that a normal grain growth is closely related w ith dissolution of phases . and carbides during solution treating at phases coarsened by the step growth mechanism change from round shape to cubic one during ageing at 7 0900 , follow ing the lat- - - ( ) . 27 . 8 / tice diffusion controlled growth rule Ostw ald ripening T he coarsening active energy is kJ mol. : ; ; ; ; Key words superalloy heat treatment microstru