2019年5月
A parametric study of morphology selection in equiaxed dendritic solidification
Computational Materials Science
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- 巻
- 162
- 号
- 開始ページ
- 76
- 終了ページ
- 81
- 記述言語
- 掲載種別
- 研究論文(学術雑誌)
- DOI
- 10.1016/j.commatsci.2019.02.027
© 2019 Elsevier B.V. Morphological change of equiaxed dendritic structure in fcc-based alloys associated with transition in preferred growth direction was investigated by means of three-dimensional quantitative phase-field simulations. The anisotropy parameters of interfacial energy ε 1 and ε 2 were systematically changed to investigate the growth direction and growth morphology. The growth morphologies can be classified into four types; 〈1 0 0〉 growth, 〈1 0 0〉-like hyperbranched growth, 〈1 1 0〉-like hyperbranched growth and 〈1 1 0〉 growth morphologies. An orientation selection map for these morphologies was constructed in a space spanned by ε 1 and ε 2 . Furthermore, dependence of the orientation selection map on solidification condition and alloy system was investigated. When initial supersaturation is large and/or partition coefficient of alloy is small, the region of 〈1 0 0〉 growth, typical growth direction of fcc alloy, diminishes in the orientation selection map.
- リンク情報
- ID情報
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- DOI : 10.1016/j.commatsci.2019.02.027
- ISSN : 0927-0256
- SCOPUS ID : 85062177824