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A coupled diffusion-deformational phase field formulation for precipitate growth during laser-aided additive manufacturing processстатья
Информация о цитировании статьи получена из
Scopus
Статья опубликована в журнале из списка Web of Science и/или Scopus
Дата последнего поиска статьи во внешних источниках: 6 марта 2019 г.
- Автор: Mirzade F.Kh
- Журнал: Journal of Physics: Conference Series
- Том: 1109
- Год издания: 2018
- Издательство: IOP Publishing
- Местоположение издательства: [Bristol, UK], England
- Первая страница: 012014
- DOI: 10.1088/1742-6596/1109/1/012014
- Аннотация: A coupled stress-diffusion model for diffusion-controlled growth of precipitates in the powder-based laser additive manufacturing (AM) of metallic parts is presented using phase field approximation. The model is developed in a thermodynamically consistent way, with free- energy expressions associated with microstructural processes, the postulation of energy and mass balances and demonstration that the classical entropy inequality (Clausus-Duhem inequality) is satisfied. The governing equations that follow from the balance laws involve the phase variable, the atomic displacement field, the plastic hardening variables, and the solute concentration field, with significant couplings between all equations. The model includes concentration dependent eigen strain, strain due to phase transformation, strain dependency on precipitate growth and plastic hardening effects. To describe the effects of temperature and fluid velocity distributions and thermal history on the precipitate growth mechanisms a linking of microscale model with the macroscopic AM processing conditions is discussed
- Добавил в систему: Мирзаде Фикрет Хансуварович