MICROSTRUCTURE AND MECHANICAL PROPERTIES OF DIRECT METAL LASER SINTERED TI-6AL-4V

Authors

  • Thorsten Hermann Becker Stellenbosch University http://orcid.org/0000-0002-4089-3574
  • Mathias Beck Technische Universität München, München
  • Cornie Scheffer Department of Mechanical and Mechatronic Engineering, Stellenbosch University, Stellenbosch

DOI:

https://doi.org/10.7166/26-1-1022

Keywords:

Selective Laser Melting, Direct Metal Laser Sintering, DMLS, Ti-6Al-4V, Mechanical Properties, Fatigue, Fracture Toughness, Microstructure

Abstract

Direct metal laser sintering (DMLS) is a selective laser melting (SLM) manufacturing process that can produce near net shape parts from metallic powders. A range of materials are suitable for SLM; they include various metals such as titanium, steel, aluminium, and cobalt-chrome alloys. This paper forms part of a research drive that aims to evaluate the material performance of the SLM-manufactured metals. It presents DMLS-produced Ti-6Al-4V, a titanium alloy often used in biomedical and aerospace applications. This paper also studies the effect of several heat treatments on the microstructure and mechanical properties of Ti-6Al-4V processed by SLM. It reports the achievable mechanical properties of the alloy, including quasi-static, crack growth behaviour, density and porosity distribution, and post-processing using various heat-treatment conditions.

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Author Biography

Thorsten Hermann Becker, Stellenbosch University

Senior Lecturer

Department of Mechanical and Mechatronic Engineering

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Published

2015-03-12

How to Cite

Becker, T. H., Beck, M., & Scheffer, C. (2015). MICROSTRUCTURE AND MECHANICAL PROPERTIES OF DIRECT METAL LASER SINTERED TI-6AL-4V. The South African Journal of Industrial Engineering, 26(1), 1–10. https://doi.org/10.7166/26-1-1022

Issue

Vol. 26 No. 1 (2015)

Section

Feature Articles

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