The effect of laser energy input on the microstructure, physical and mechanical properties of Ti-6Al-4V alloys by selective laser melting

Do, D. K. and Li, P. (2016) The effect of laser energy input on the microstructure, physical and mechanical properties of Ti-6Al-4V alloys by selective laser melting. Virtual and Physical Prototyping, 11(1), pp. 41-47. (doi: 10.1080/17452759.2016.1142215)

Abstract

Selective laser melting is an advanced manufacturing process which can control the microstructure evolution and mechanical properties of as-manufactured products via various processing parameters. In this study, the porosity/relative density, surface quality, microstructure and mechanical properties were investigated on the selective laser melted Ti-6Al-4V alloy specimens fabricated with a wide range of laser energy inputs. It was found that the microstructure of selected laser melted Ti-6Al-4V alloys is typical of acicular martensites α′. Quantitative analysis reveals that the relative density, martensitic lath size and microhardness increase with the laser energy input. The surface quality is also substantially affected by the energy input.

• Item Type: Articles
• Status: Published
• Refereed: Yes
• Glasgow Author(s) Enlighten ID: Do, Dang Khoa and Li, Dr Peifeng
• Authors: Do, D. K., and Li, P.
• College/School: College of Science and Engineering > School of Engineering > Systems Power and Energy
• Journal Name: Virtual and Physical Prototyping
• Publisher: Taylor & Francis
• ISSN: 1745-2759
• ISSN (Online): 1745-2767
• Published Online: 08 February 2016