The effect of heat treatment on the microstructure and mechanical properties of 3D-printed AlSi9Cu3Fe alloy

0538017 - FZÚ 2021 RIV GB eng C - Konferenční příspěvek (zahraniční konf.)
Roudnická, Michaela - Dvorský, Drahomír - Vojtěch, D.
The effect of heat treatment on the microstructure and mechanical properties of 3D-printed AlSi9Cu3Fe alloy.
IOP Conference Series: Materials Science and Engineering, vol. 461. Bristol: IOP Publishing, 2018, s. 1-7, č. článku 012071. ISSN 1757-8981.
[International Conference Recent Trends in Structural Materials /5./ (COMAT 2018). Plzeň (CZ), 14.11.2018-16.11.2018]
Institucionální podpora: RVO:68378271
Klíčová slova: 3D printing * AlSi9Cu3Fe * heat treatment
Obor OECD: Materials engineering

In this paper, we characterize AlSi9Cu3Fe alloy prepared by selective laser melting (SLM), a 3D printing technique based on the localized melting of a powder material by a laser beam in thin successively deposited layers. The layer-wise building-up resulted in an anisotropic and hierarchical microstructure of this alloy. High cooling rates brought a very fine microstructure, which contributed to high material strength, but also residual stresses, which are undesirable. Residual stresses can be reduced by various heat treatments. We carried out stress-relief and T6 heat treatments and studied their effect on the microstructure and mechanical properties. T6 heat treatment brought a significant increase in tensile yield strength.
Trvalý link: http://hdl.handle.net/11104/0315853