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Oxygen-Induced Dynamic Embrittlement in Nickel-Base Superalloys
Published online by Cambridge University Press: 15 March 2011
Abstract
The phenomenon of dynamic embrittlement involves the stress-induced diffusion of a surface- adsorbed embrittling element into grain boundaries, leading to time-dependent decohesion along these boundaries. Here, the state of our understanding of this generic type of brittle fracture is reviewed, with the focus on cracking of nickel-base superalloys caused by oxygen, including recent and new results on cracking in bicrystals, thermo-mechanical processing to reduce the susceptibility to dynamic embrittlement, and quench cracking.
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- Copyright © Materials Research Society 2004
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