The Use of Selective Laser Melting to Increase the Performance of AlSi9Cu3Fe Alloy

被引：32

作者：

Fousova, Michaela ^{[1
,2
]}

Dvorsky, Drahomir ^{[1
,2
]}

Vronka, Marek ^{[2
]}

Vojtech, Dalibor ^{[1
]}

Lejcek, Pavel ^{[2
]}

机构：

[1] Univ Chem & Technol Prague, Dept Met & Corros Engn, Tech 5, Prague 16628 6, Czech Republic

[2] AS CR, Inst Phys, Na Slovance 1999-2, Prague 18221 8, Czech Republic

来源：

MATERIALS | 2018年 / 11卷 / 10期

关键词：

aluminum alloy; AlSi9Cu3(Fe); selective laser melting; additive manufacturing; MECHANICAL-PROPERTIES; AL-SI; HEAT-TREATMENT; TENSILE PROPERTIES; GRAIN-REFINEMENT; CASTING ALLOYS; AL-12SI ALLOY; MICROSTRUCTURE; SLM; TI-6AL-4V;

D O I：

10.3390/ma11101918

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

For the first time, the comprehensive characterization of the additively manufactured AlSi9Cu3Fe alloy is reported in this paper. Conventionally, the AlSi9Cu3(Fe) alloy is prepared by high-pressure die casting (HPDC), but this technology largely does not offer such opportunities as additive manufacturing (AM) does, especially in the design of new lightweight parts. In the present paper, testing samples were prepared by selective laser melting (SLM), one of the AM technologies, and characterized in terms of their microstructure (by means of light microscopy, scanning electron microscopy and transmission electron microscopy in combination with analytical techniques for evaluation of chemical and phase composition) and mechanical properties (static tension, compression, and hardness). All the characteristics were compared with the HPDC reference material. Our study showed an excellent improvement both in strength (374 +/- 11 MPa compared to 257 +/- 17 MPa) and plasticity (1.9 +/- 0.2% compared to 1.2 +/- 0.5%) of the material thanks to its very fine and distinctive microstructure.

引用

页数：16

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