Effects of Cooling Rate on Solidification Characteristics and Microstructure of Al-Fe Alloy

He Kezhun; LüJun; Shi Xiaoming; Wang Chunxia

doi:10.15980/j.tzzz.2021.03.013

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Effects of Cooling Rate on Solidification Characteristics and Microstructure of Al-Fe Alloy
Vol. 41, Issue 3, Pages: 325-327(2021)
Published： 2021 ，
DOI： 10.15980/j.tzzz.2021.03.013

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[1]何克准,吕君,史晓明,王春霞.冷却速度对Al-3Fe合金凝固特性和微观组织的影响[J].特种铸造及有色合金,2021,41(03):325-327.

He Kezhun, LüJun, Shi Xiaoming, et al. Effects of Cooling Rate on Solidification Characteristics and Microstructure of Al-Fe Alloy. [J]. Special Casting & Nonferrous Alloys 41(3):325-327(2021)
[1]何克准,吕君,史晓明,王春霞.冷却速度对Al-3Fe合金凝固特性和微观组织的影响[J].特种铸造及有色合金,2021,41(03):325-327. DOI： 10.15980/j.tzzz.2021.03.013.

He Kezhun, LüJun, Shi Xiaoming, et al. Effects of Cooling Rate on Solidification Characteristics and Microstructure of Al-Fe Alloy. [J]. Special Casting & Nonferrous Alloys 41(3):325-327(2021) DOI： 10.15980/j.tzzz.2021.03.013.

摘要

采用冷却曲线测定、光学显微镜（OM）和X射线衍射仪（XRD）研究了冷却速度对Al-3Fe合金凝固特性和凝固组织的影响。结果表明

在冷却速度为0.69～11.8℃/s的范围内

Al-3Fe合金的显微组织均由α-Al枝晶、初生富Fe相及枝晶间的共晶组织组成

其中富Fe相主要为Al

Fe、Al

和Al

Fe相。冷却速度对Al-3Fe合金的凝固特性和凝固组织有明显的影响。随着冷却速度的提高

合金初生相形核温度和共晶反应温度降低

合金的凝固组织明显细化。

Abstract

The effects of cooling rate on the solidification characteristics and microstructure of Al-3Fe alloy were investigated by cooling curve measurement

optical microscope（OM）and X-ray diffraction（XRD）.The results indicate that in the cooling rate of 0.69～11.8℃/s

the microstructure of Al-3Fe alloy is composed ofα-Al dendrites

primary Fe-rich phases

which mainly contains Al

Fe and Al

phases

and interdendrite eutectic structures.the cooling rates have an obvious effect on the solidification characteristics and microstructure of Al-3Fe alloy.With the increase of cooling rates

the nucleation temperature of primary phases and eutectic reaction temperature are decreased

with the solidification structures refined significantly.