Journal
MATERIALS LETTERS
Volume 234, Issue -, Pages 196-200Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.matlet.2018.09.109
Keywords
Selective laser melting; Metals and alloys; AlSi10Mg; Residual stress; X-ray techniques; Mechanical properties
Funding
- National Natural Science Foundation of China [51604223]
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In the present work, the model alloy of AlSi10Mg was prepared by selective laser melting, and further annealed by two kinds of heat treatment regimes, i.e. A1 (300 degrees C/2h+ water quench) and A2 (535 degrees C/1h + water quench + 190 degrees C/10 h+ furnace quench). The samples were investigated by XRD, SEM, EBSD, room temperature tensile and nanoindentation tests, to understand the effect of heat treatments on the phase constituents, microstructure, residual stress and mechanical properties of the laser additive manufactured AlSi10Mg alloy. The experimental results showed that, the heat treatment method of A1 is an effective heat treatment regime for eliminating the residual stress and improving the comprehensive mechanical properties for structural applications. (C) 2018 Elsevier B.V. All rights reserved.
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