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- Title
Microstructure and Crystallization Evolution of Directionally Solidified Al–Cu–Si Alloys With the Assistance of a Static Magnetic Field.
- Authors
Du, Dafan; Dong, Anping; Shu, Da; Zhu, Guoliang; Sun, Baode; Li, Xi
- Abstract
We report on the study of the evolution of microstructure and crystallization during directionally solidified Al–Cu–Si alloys with the assistance of a static magnetic field (SMF). Our results investigate how the applied SMF changed a colony eutectic structure to a normal eutectic structure; moreover, the eutectic colony spacing and the interlamellar spacing decrease with increasing SMF intensity. Electron backscatter diffraction (EBSD) results show that the SMF changed the crystal orientation relationships (OR) between α-Al and Al2Cu phases from an unusual relationship [Gamma 4: Al(001)//Al2Cu(011)] to a normal one [Beta 6: Al(111)//Al2Cu(211)]. Cu content in the α-Al phase decreases with increasing SMF intensity. The evolution of the eutectic microstructure and the OR can be attributed to the thermoelectric magnetic effects which change the solute distribution at both the crucible and eutectic scales.
- Subjects
MAGNETIC fields; EUTECTIC structure; CRYSTALLIZATION; THERMOELECTRIC effects; EUTECTICS; ALLOYS
- Publication
Metallurgical & Materials Transactions. Part A, 2022, Vol 53, Issue 8, p3166
- ISSN
1073-5623
- Publication type
Article
- DOI
10.1007/s11661-022-06735-w