A heat treatable TiB2/Al-3.5Cu-1.5Mg-1Si composite fabricated by selective laser melting: Microstructure, heat treatment and mechanical properties

被引：154

作者：

Wang, P. ^{[1
]}

Gammer, C. ^{[2
]}

Brenne, F. ^{[3
]}

Niendorf, T. ^{[3
]}

Eckert, J. ^{[2
,4
]}

Scudino, S. ^{[1
]}

机构：

[1] IFW Dresden, Inst Complex Mat, Helmholtzstr 20, D-01069 Dresden, Germany

[2] Austrian Acad Sci, Erich Schmid Inst Mat Sci, Jahnstr 12, A-8700 Leoben, Austria

[3] Inst Mat Engn Metall Mat, Monchebersstr 3, D-34125 Kassel, Germany

[4] Univ Leoben, Dept Mat Phys, Jalntstr 12, A-8700 Leoben, Austria

来源：

COMPOSITES PART B-ENGINEERING | 2018年 / 147卷

基金：

欧洲研究理事会;

关键词：

Selective laser melting; TiB2/Al-Cu-Mg-Si composite; Heat treatment; Microstructure Mechanical properties; ALUMINUM-MATRIX COMPOSITES; AL; ALLOY; BEHAVIOR; TITANIUM; STRENGTH; NANOCOMPOSITES; PARTICLES; STRESS;

D O I：

10.1016/j.compositesb.2018.04.026

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

A heat treatable TiB2/Al-3.5Cu-1.5Mg-1Si composite was successfully fabricated by selective laser melting (SLM). The results show that the Q phase forms in the matrix of the as-fabricated TiB2/Al-3.5Cu-1.5Mg-1Si composite. After T6 heat treatment, the Q phase disappears and the AlxMny, Mg2Si and Al2Cu(Mg) phases are formed. The same results can be observed before and after heat treatment in the unreinforced Al-Cu-Mg-Si alloy. EBSD and TEM analyses indicate that the addition of the TiB2 particles results in a remarkable grain refinement, leading to enhanced strength of the TiB2/Al-Cu-Mg-Si composite in comparison to the unreinforced Al-Cu-Mg-Si alloy in both the as-fabricated and heat-treated conditions. Both grain refinement and Orowan strengthening contribute to the high strength of the heat treated TiB2/Al-Cu-Mg-Si composite.

引用

页码：162 / 168

页数：7

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