Microstructure, Mechanical Properties and Tribological Behavior of Wire Electron Beam Additive Manufactured Eutectic Al-12Si Alloy

被引：1

作者：

Tarasov, Sergei ^{[1
]}

Balokhonov, Ruslan ^{[1
]}

Utyaganova, Veronika ^{[1
]}

Zykova, Anna ^{[1
]}

Savchenko, Nikolai ^{[1
]}

Vorontsov, Andrey ^{[1
]}

Romanova, Varvara ^{[1
]}

Shamarin, Nikolai ^{[1
]}

Knyazhev, Evgeny ^{[1
]}

Gurianov, Denis ^{[1
]}

Moskvichev, Evgeny ^{[1
]}

机构：

[1] Russian Acad Sci, Inst Strength Phys & Mat Sci, Tomsk 634055, Russia

来源：

METALS AND MATERIALS INTERNATIONAL | 2025年 / 31卷 / 03期

基金：

俄罗斯科学基金会;

关键词：

Wire electron beam additive manufacturing; Eutectics; Sliding; ALSI12;

D O I：

10.1007/s12540-024-01785-8

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Wire electron beam additive manufacturing has been used to build a wall from Al-12Si wire on an AA5056 substrate. The microstructures composed of aluminum dendrites and Al/Si eutectics have been revealed along with heat-affected bands where silicon crystals coarsened by reheating from deposition of the next layer. Fine precipitates were detected in the aluminum grains subjected to reheating. Twinning of silicon particles was found by means of TEM, which was the result of the thermal expansion mismatch stresses that appeared in cooling to the room temperatures as shown by direct FEM numerical simulations. Ultimate tensile strength (UTS) and yield stress (YS) ranged from 178-185 MPa and 104-115 MPa, respectively, as compared to 84 and 142 MPa for the as-cast alloy. Minimal wear was obtained on samples cut from the middle part of the wall. Wire additive manufacturing allowed obtaining the Al-12Si structures with equiaxed eutectic Si crystals that allowed improving tensile and compression strengths as well as wear resistance as compared to those of the as-cast alloy.

引用

页码：787 / 810

页数：24

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