Browsing by Author "Becker, Thorsten Hermann"
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- ItemMicrostructure and mechanical properties of direct metal laser sintered TI-6AL-4V(SAIIE, 2015) Becker, Thorsten Hermann; Beck, Mathias; Scheffer, CornieDirect 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.
- ItemOn the impact of different system strategies on the material performance of selective laser melting- manufactured TI6AL4V components(Southern African Institute for Industrial Engineering, 2016-11) Dimitrov, Dimitri; Becker, Thorsten Hermann; Yadroitsev, Igor; Booysen, GerryENGLISH ABSTRACT: Selective Laser Melting (SLM) is a powder-based additive manufacturing process that has gained substantial interest in recent years due to its feasibility of producing geometrically- complex metallic components for end-use in various industries, with or without post-treatment procedures. This paper presents recent research undertaken on different scanning strategies and process parameters with the purpose of providing an overview of the achievable material performance of Ti6Al4V components, and comparing its properties with the conventionally-produced parts. In order to understand their output, differences in the building strategies of the systems studied are analysed, and their influence on the resulting mechanical and metallurgical properties is highlighted.