Microstructural characterisation of laser beam and gas tungsten arc welded zirconium-2.5Nb
| dc.contributor.author | Mahlalela, Sibusiso Samuel | |
| dc.contributor.author | Pistorius, Pieter Georg Hendrik | |
| dc.date.accessioned | 2018-07-25T08:37:25Z | |
| dc.date.available | 2018-07-25T08:37:25Z | |
| dc.date.issued | 2017-10 | |
| dc.description | This paper was first presented at the AMI Precious Metals 2017 Conference ‘The Precious Metals Development Network’ 17–20 October 2017, Protea Hotel Ranch Resort, Polokwane, South Africa. | en_ZA |
| dc.description.abstract | The current study is intended to characterise the complex microstructure that results from autogenous welding of Zr-2.5Nb and its influence on mechanical properties. Laser beam welding (LBW) and gas tungsten arc welding (GTAW) were performed on a 1.5 mm thick samples by applying different combinations of speed and power to vary the heat input. The effect of cooling rate on β-α phase transformation temperature and the resulting microstructure was investigated using a Bahr dilatometer. In addition, mechanical properties were determined by tensile and hardness testing. The base metal microstructure consisted of a fine structure of Zralpha with a small fraction of Nb-beta phase. Both LBW- and GTAWwelded joints displayed similar martensitic microstructures, with the main difference being the weld geometry and strength. | en_ZA |
| dc.description.department | Materials Science and Metallurgical Engineering | en_ZA |
| dc.description.librarian | am2018 | en_ZA |
| dc.description.librarian | mi2025 | en |
| dc.description.sdg | SDG-09: Industry, innovation and infrastructure | en |
| dc.description.sdg | SDG-12: Responsible consumption and production | en |
| dc.description.sdg | SDG-13: Climate action | en |
| dc.description.uri | http://www.saimm.co.za/journal-papers | en_ZA |
| dc.identifier.citation | Mahlalela. S.S. & Pistorius, P.G.H. 2017, 'Microstructural characterisation of laser beam and gas tungsten arc welded zirconium-2.5Nb', Journal of the Southern African Institute of Mining and Metallurgy, vol. 117, pp. 947-953. | en_ZA |
| dc.identifier.issn | 0038-223X (print) | |
| dc.identifier.issn | 2225-6253 (online) | |
| dc.identifier.other | 10.17159/2411-9717/2017/v117n10a4 | |
| dc.identifier.uri | http://hdl.handle.net/2263/65878 | |
| dc.language.iso | en | en_ZA |
| dc.publisher | Southern African Institute of Mining and Metallurgy | en_ZA |
| dc.rights | © The Southern African Institute of Mining and Metallurgy, 2017 | en_ZA |
| dc.subject | Zr-2.5Nb | en_ZA |
| dc.subject | Autogenous welding | en_ZA |
| dc.subject | Microstructure | en_ZA |
| dc.subject | Laser beam welding (LBW) | en_ZA |
| dc.subject | Gas tungsten arc welding (GTAW) | en_ZA |
| dc.subject | Mechanical properties | en_ZA |
| dc.subject | β-α phase transformation temperature | en_ZA |
| dc.subject | Cooling rate | en_ZA |
| dc.subject.other | Engineering, built environment and information technology articles SDG-09 | |
| dc.subject.other | SDG-09: Industry, innovation and infrastructure | |
| dc.subject.other | Engineering, built environment and information technology articles SDG-12 | |
| dc.subject.other | SDG-12: Responsible consumption and production | |
| dc.subject.other | Engineering, built environment and information technology articles SDG-13 | |
| dc.subject.other | SDG-13: Climate action | |
| dc.title | Microstructural characterisation of laser beam and gas tungsten arc welded zirconium-2.5Nb | en_ZA |
| dc.type | Article | en_ZA |