Effects of Plate Magnetic Field on Iron-Rich Phase of Al-20Si-10Fe Alloy during Solidification

Abstract:

This paper studies iron-rich phase transformation law and mechanism of Al-20Si-10Fe alloy under the effect of plate magnetic field. with optical microscopy(OM)，scanning electron microscopy(SEM),energy dispersive spectrum(EDS)and transmission electron microscopy(TEM). The results show that plate magnetic field is directly involved in the phase transformation of iron-rich phase, making iron-rich phase change from lath-shaped β-Al₅FeSi to herringbone-shapedα-Al₈SiFe₂. The enforcement of plate magnetic field during the phase-transforming process of β-Al₅FeSi→α-Al₈Si Fe₂ makes block α-Al_1.3Si_7.8Fe_2.1 phase yield out. And precipitation of α-Al_1.3Si_7.8Fe_2.1 phase is affected by the transforming process ofβ-Al₅SiFe phase→α-Al₈Si Fe₂phase.

• Periodical: Applied Mechanics and Materials (Volumes 182-183)
• Pages: 167-173
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.182-183.167
• Online since: June 2012
• Authors: Ming Li, Zhi Ming Shi, Dong Fang
• Keywords: Al-20Si-10Fe, Iron-Rich Phase, Plate Magnetic Field, Transformation

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