Microstructure and Properties of Spray Deposited Al-17Si-4Fe-2Mn-3Ni-3.5Cu-1Mg Alloy

Shi Haifang1; Qu Bolin1; Yuan Xiaoguang1

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Microstructure and Properties of Spray Deposited Al-17Si-4Fe-2Mn-3Ni-3.5Cu-1Mg Alloy
Vol. 29, Issue 11, Pages: 1050-1053(2009)
Published： 2009 ，
DOI：

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[1]时海芳,曲博林,袁晓光.喷射沉积Al-17Si-4Fe-2Mn-3Ni-3.5Cu-1Mg合金组织与性能[J].特种铸造及有色合金,2009,29(11):1050-1053+978-979.

Shi Haifang1, Qu Bolin1, Yuan Xiaoguang1. Microstructure and Properties of Spray Deposited Al-17Si-4Fe-2Mn-3Ni-3.5Cu-1Mg Alloy. [J]. Special Casting & Nonferrous Alloys 29(11):1050-1053(2009)
[1]时海芳,曲博林,袁晓光.喷射沉积Al-17Si-4Fe-2Mn-3Ni-3.5Cu-1Mg合金组织与性能[J].特种铸造及有色合金,2009,29(11):1050-1053+978-979. DOI：

Shi Haifang1, Qu Bolin1, Yuan Xiaoguang1. Microstructure and Properties of Spray Deposited Al-17Si-4Fe-2Mn-3Ni-3.5Cu-1Mg Alloy. [J]. Special Casting & Nonferrous Alloys 29(11):1050-1053(2009) DOI：

摘要

采用喷射沉积快速凝固技术制备了Al-17Si-4Fe-2Mn-3Ni-3.5Cu-1Mg合金

利用金相、XRD、SEM等测试方法分析了合金的组织特征、热稳定性及力学性能。结果表明

喷射沉积合金的组织由大量弥散分布的粒状相

少量块状相和共晶基体组成。合金在150、250、350℃下不同时间加热后

初晶Si没有明显的粗化。证明其在350℃下具有良好的热稳定性。合金经热处理后

室温抗拉强度达373MPa。

Abstract

Microstructure

thermal stability and mechanical properties of spray-deposited prepared Al-17Si-4Fe-2Mn-3Ni-3.5Cu-1Mg alloy were investigated by OM（optical microscope）

XRD（X-ray diffraction） and SEM（scanning electron microscope）.The results reveal that the microstructure of the alloy is composed of lots of dispersed granular phase

a little block-like phase and eutectic matrix.Obvious coarseness of primary Si phase can not be observed in the alloy with different heating time at 150℃

250℃ and 350℃

respectively

which verifies that the alloy exhibits desirable thermal stability at below 350℃.Ultimate tensile strength of the as-extruded alloy after T6 treatment reaches 373MPa at room temperature.