Selective laser melting produced Ti-6Al-4V : post-process heat treatments to achieve superior tensile properties
| dc.contributor.author | Ter Haar, Gerrit M. | en_ZA |
| dc.contributor.author | Becker, Thorsten H. | en_ZA |
| dc.date.accessioned | 2019-10-17T07:43:48Z | |
| dc.date.available | 2019-10-17T07:43:48Z | |
| dc.date.issued | 2018 | |
| dc.description | CITATION: Ter Haar, G. M. & Becker, T. H. 2018. Selective laser melting produced Ti-6Al-4V : post-process heat treatments to achieve superior tensile properties. Materials, 11(1):146, doi:10.3390/ma11010146. | |
| dc.description | The original publication is available at https://www.mdpi.com | |
| dc.description.abstract | ENGLISH ABSTRACT: Current post-process heat treatments applied to selective laser melting produced Ti-6Al-4V do not achieve the same microstructure and therefore superior tensile behaviour of thermomechanical processed wrought Ti-6Al-4V. Due to the growing demand for selective laser melting produced parts in industry, research and development towards improved mechanical properties is ongoing. This study is aimed at developing post-process annealing strategies to improve tensile behaviour of selective laser melting produced Ti-6Al-4V parts. Optical and electron microscopy was used to study α grain morphology as a function of annealing temperature, hold time and cooling rate. Quasi-static uniaxial tensile tests were used to measure tensile behaviour of different annealed parts. It was found that elongated α’/α grains can be fragmented into equiaxial grains through applying a high temperature annealing strategy. It is shown that bi-modal microstructures achieve a superior tensile ductility to current heat treated selective laser melting produced Ti-6Al-4V samples. | en_ZA |
| dc.description.uri | https://www.mdpi.com/1996-1944/11/1/146 | |
| dc.description.version | Publisher's version | |
| dc.format.extent | 15 pages | en_ZA |
| dc.identifier.citation | Ter Haar, G. M. & Becker, T. H. 2018. Selective laser melting produced Ti-6Al-4V : post-process heat treatments to achieve superior tensile properties. Materials, 11(1):146, doi:10.3390/ma11010146 | |
| dc.identifier.issn | 1996-1944 (online) | |
| dc.identifier.other | doi:10.3390/ma11010146 | |
| dc.identifier.uri | http://hdl.handle.net/10019.1/106658 | |
| dc.language.iso | en_ZA | en_ZA |
| dc.publisher | MDPI | en_ZA |
| dc.rights.holder | Authors retain copyright | en_ZA |
| dc.subject | Additives -- Manufacturing | en_ZA |
| dc.subject | Metals -- Heat treatment | en_ZA |
| dc.subject | Titanium alloys -- Heat treatment | en_ZA |
| dc.title | Selective laser melting produced Ti-6Al-4V : post-process heat treatments to achieve superior tensile properties | en_ZA |
| dc.type | Article | en_ZA |