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Effects of hot isostatic pressing and heat treatments on structural and corrosion properties of direct metal laser sintered parts

Effects of hot isostatic pressing and heat treatments on structural and corrosion properties of... This paper aims to investigate the effects of various heat treatments on microstructure, hardness, porosity and corrosion properties of the parts.Design/methodology/approachHot isostatic pressing (HIP) process, various heat treatments and their combinations were applied to the AlSi10Mg parts produced by direct laser metal sintering (DMLS).FindingsIt has been found that the HIP process, which is a post-processing process, reduces the amount of porosity in DMLS-AlSi10Mg material, thus improves corrosion resistance significantly.Originality/valueIn this study, the HIP process and subsequent T6 heat treatments were applied to AlSi10Mg parts produced by the DMLS technique. The study aims to increase the corrosion resistance of AlSi10Mg parts by reducing porosity with the HIP process and by altering the microstructure with the T6 process. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Rapid Prototyping Journal Emerald Publishing

Effects of hot isostatic pressing and heat treatments on structural and corrosion properties of direct metal laser sintered parts

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Publisher
Emerald Publishing
Copyright
© Emerald Publishing Limited
ISSN
1355-2546
eISSN
1355-2546
DOI
10.1108/rpj-10-2020-0245
Publisher site
See Article on Publisher Site

Abstract

This paper aims to investigate the effects of various heat treatments on microstructure, hardness, porosity and corrosion properties of the parts.Design/methodology/approachHot isostatic pressing (HIP) process, various heat treatments and their combinations were applied to the AlSi10Mg parts produced by direct laser metal sintering (DMLS).FindingsIt has been found that the HIP process, which is a post-processing process, reduces the amount of porosity in DMLS-AlSi10Mg material, thus improves corrosion resistance significantly.Originality/valueIn this study, the HIP process and subsequent T6 heat treatments were applied to AlSi10Mg parts produced by the DMLS technique. The study aims to increase the corrosion resistance of AlSi10Mg parts by reducing porosity with the HIP process and by altering the microstructure with the T6 process.

Journal

Rapid Prototyping JournalEmerald Publishing

Published: Jul 14, 2021

Keywords: Hot isostatic pressing (HIP); Direct metal laser sintering (DMLS); Heat treatment; AlSi10Mg; Additive manufacturing (AM); Corrosion resistance

References