Diffusion and deformation controlled creep crack growth |
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| Authors: | D A Miller R Pilkington |
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| Affiliation: | (1) Department of Mechanical Engineering, University of Bristol, Queen’s Building, BS8 1TR Bristol, UK;(2) Department of Metallurgy, University of Manchester, Ml 7HS Manchester, UK |
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| Abstract: | A mechanism for creep crack growth is proposed by which the crack grows by formation of grain boundary cavities ahead of the
crack tip. Two cases are considered; firstly, when cavity growth is diffusion controlled and secondly, where growth is deformation
controlled. The resultant crack growth rates predicted by these theoretical models are compared with experimental data. |
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