Nano-hardness and microstructure of selective laser melted AlSi10Mg scan tracks

Aboulkhair, Nesma T.; Tuck, Christopher; Maskery, Ian; Ashcroft, Ian; Everitt, Nicola

Abstract

Selective laser melting (SLM) of aluminium alloys faces more challenges than other ongoing alloys such as stainless steels and titanium alloys because of the material’s properties. It is important to study single scan tracks if high density large parts are to be made since they are the primary building blocks. In this study, the geometrical features of AlSi10Mg tracks indicated keyhole mode melting domination. Chemical composition mapping and nanoindentation showed enhanced nano-hardness in SLM material over conventional material with no spatial variation. This is due to a homogeneous elemental distribution and fine microstructure developed by fast solidification.

Citation

Aboulkhair, N. T., Tuck, C., Maskery, I., Ashcroft, I., & Everitt, N. (2015). Nano-hardness and microstructure of selective laser melted AlSi10Mg scan tracks. In Industrial Laser Applications Symposium (ILAS 2015). https://doi.org/10.1117/12.2190015

• Conference Name: Industrial Laser Applications Symposium (ILAS 2015)
• End Date: Mar 18, 2015
• Online Publication Date: Mar 17, 2015
• Publication Date: Jul 1, 2015
• Deposit Date: May 20, 2016
• Publicly Available Date: May 20, 2016
• Electronic ISSN: 0277786X
• Peer Reviewed: Peer Reviewed
• Volume: 9657
• Book Title: Industrial Laser Applications Symposium (ILAS 2015)
• DOI: https://doi.org/10.1117/12.2190015
• Public URL: https://nottingham-repository.worktribe.com/output/752834
• Publisher URL: http://dx.doi.org/10.1117/12.2190015
• Additional Information: Copyright 2015 Society of Photo Optical Instrumentation Engineers. One print or electronic copy may be made for personal use only. Systematic reproduction and distribution, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper are prohibited.
• Contract Date: May 20, 2016