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Effect of microstructure degradation on creep crack growth

✍ Scribed by Viggo Tvergaard

Book ID
104614725
Publisher
Springer Netherlands
Year
1990
Tongue
English
Weight
611 KB
Volume
42
Category
Article
ISSN
1573-2673

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✦ Synopsis

Creep crack growth by grain boundary cavitation is analysed numerically for center cracked and edge cracked panels. Creep acceleration induced by microstructure degradation is incorporated in the material model that describes the nucleation and growth of cavities in the grain boundary, including the effect of diffusion, dislocation creep and grain boundary sliding. It is found that the creep acceleration significantly reduces the notch sensitivity of the material.

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