Record number :
2156465
Title of article :
The effect of thermal exposure on the properties of a Ni-base superalloy
Author/Authors :
Aghaie-Khafri، نويسنده , , M. and Hajjavady، نويسنده , , M.، نويسنده ,
Issue Information :
روزنامه با شماره پیاپی سال 2008
Pages :
6
From page :
388
To page :
393
Abstract :
The effect of 1000 h thermal exposure on the microstructural instability and mechanical properties degradation of IN738C at 850 °C were investigated by means of TEM, SEM and accelerated creep tests. Experimental observation on the coarsening of primary and secondary γ′ precipitates showed that D 3 − D 0 3 is linear with time in accordance with LSW theory. The correlation between γ′ changes due to thermal exposure and creep characteristics was investigated and modeled on the basis of the γ′ diameter and γ′ particles spacing.
Keywords :
Creep , Phase transformations , Superalloy , Coarsening
Journal title :
MATERIALS SCIENCE & ENGINEERING: A
Serial Year :
2008
Link To Document :
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