Crack initiation and propagation mechanisms during thermal fatigue in directionally solidified superalloy DZ125
Abstract
Dramatic temperature changes will lead to uneven expansion and contraction, and then create transient stress cycles that inevitably result in thermal fatigue damage. In this study, the thermal fatigue crack initiation and propagation behaviors of a typical directionally solidified superalloy DZ125 under 900 °C and 1000 °C were investigated systematically using a homemade and calibrated thermal fatigue facility. The maximum thermal stress was...
Paper Details
Title
Crack initiation and propagation mechanisms during thermal fatigue in directionally solidified superalloy DZ125
Published Date
Feb 1, 2019
Volume
119
Pages
355 - 366
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