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
An aspect of the nucleation of burst martensite
โ Scribed by H. K. D. H. Bhadeshia
- Book ID
- 104825259
- Publisher
- Springer
- Year
- 1982
- Tongue
- English
- Weight
- 444 KB
- Volume
- 17
- Category
- Article
- ISSN
- 0022-2461
No coin nor oath required. For personal study only.
๐ SIMILAR VOLUMES
AbstractรTwo methods of evaluating an activation energy for the nucleation of martensite from kinetic information on isothermal martensite are discussed. In both methods the nucleation is described as thermally activated growth of an embryo up to a size where rapid growth can get started. The ยฎrst m
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,