Shot Peening Of Superalloys And Its Fatigue Properties At Elevated Temperature

Author:  R. Wang, Zhang, D. Song, Y Yin
Source:  Conf Proc: ICSP-1, (p.395-404)
Doc ID:  1981064
Year of Publication:  1981
Abstract:  
The effects of shot-peening on the elevated temperature fatigue properties (550-800oC) of four iron base, four wrought nickel base and one cast nickel base superalloys were investigated. It was found that the elevated temperature fatigue strength of all suepralloys can be improved by shot-peening in different degree, and the effects of fatigue improvement are more pronounced for notched specimens. Descriptors: Shot-peening, Elevated temperature fatigue (superalloys); Subgrain; Latticedistortion; Residual stress; Fractography