On the nucleation of the martensite transformation
β Scribed by GALLIGAN, J. M.; GAROSSHEN, T.
- Book ID
- 109710420
- Publisher
- Nature Publishing Group
- Year
- 1978
- Tongue
- English
- Weight
- 113 KB
- Volume
- 274
- Category
- Article
- ISSN
- 0028-0836
- DOI
- 10.1038/274674a0
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π SIMILAR VOLUMES
Abstmet-The heterogeneous nucleation of martensite at a dislocation is considered using an elasticity model. The dislocation is allowed to have an arbitrary Burgers vector representing, in an approximate manner, the stress field of a pile-up. It is found that an array of roughly 10 dislocations is r
Martensitic nucleation near inhomogeneities is modeled using linear elasticity. The coherent strain energy due to the formation of a martensite embryo decreases when the inhomogeneity is elastically stiffer than the matrix and vice versa. A maximum reduction of 20% in strain energy is calculated for
Estimations of nucleation barriers for singledomain and multiple-domain states of a martensite phase have been obtained. A macroscopic approach, considering the free energy of a heterophase system to be a sum of the energy of the elastically stressed equilibrium phases and the energy of interfaces,