Acta Metallurgica Sinica (English Letters) ›› 1992, Vol. 5 ›› Issue (3): 154-157.

• Research paper • Previous Articles     Next Articles

TEM STUDY ON MICROSTRUCTURE OF LASERGLAZED SINGLE CRYSTAL Ni-BASE SUPERALLOY

WANG Huaming ZHANG Jinghua TANG Yajun LI Ying'ao HU Zhuangqi Institute of Metal Research,Academia Sinica,Shenyang,China   

  • Received:1992-06-25 Revised:1992-06-25 Online:1992-06-25 Published:2009-10-10

Abstract: The microstructure of a rapidly solidified single crystal Ni-base superalloy treated by laserglazing has been observed by TEM and STEM-EDAX techniques.Various morphologies of extraordinary flower-like MC carbide of TiC type were revealed in the nar- row interdendritic regions.While the superfine γ′ precipitate and higher density of dislocation were found in the γ matrix.

Key words: laserglazing, microstructure, single-crystal superalloy