Cavity nucleation at grain boundary ledges
β Scribed by K.S. Chan; R.A. Page; J. Lankford
- Book ID
- 107709503
- Publisher
- Elsevier Science
- Year
- 1986
- Weight
- 984 KB
- Volume
- 34
- Category
- Article
- ISSN
- 0001-6160
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π SIMILAR VOLUMES
AbstractΓDimpled grain boundary fracture occurs in creep tests, stress relief cracking and hydrogen attack of steels. While the growth of these voids by grain boundary diusion is well established, the mode of void nucleation is uncertain. It is shown that the reduction of surface energy by solute ad
Incubation times and frequency factors are derived for some cases of heterogeneous nucleation on grain boundaries. The incubation time in all cases is found to be proportional to the critical nucleus volume squared divided by the frequency factor and free energy of critical nucleus formation. It is