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
收藏
页码：162 / 168
页数：7
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