Towards Qualification in the Aviation Industry: Impact Toughness of Ti6Al4V(ELI) Specimens Produced through Laser Powder Bed Fusion Followed by Two-Stage Heat Treatment

Laser powder bed fusion (L-PBF) has the potential to be applied in the production of titanium aircraft components with good mechanical properties, provided the technology has been qualified and accepted in the aviation industry. To achieve acceptance of the L-PBF technology in the aircraft industry,...

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Autores principales:	Lehlohonolo Francis Monaheng, Willie Bouwer du Preez, Claudia Polese
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	impact toughness aviation industry additive manufacturing Ti6Al4V(ELI) two-stage heat treatment Mining engineering. Metallurgy TN1-997
Acceso en línea:	https://doaj.org/article/674334bdf5f7459f96c657197e550eae
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spelling	oai:doaj.org-article:674334bdf5f7459f96c657197e550eae2021-11-25T18:21:35ZTowards Qualification in the Aviation Industry: Impact Toughness of Ti6Al4V(ELI) Specimens Produced through Laser Powder Bed Fusion Followed by Two-Stage Heat Treatment10.3390/met111117362075-4701https://doaj.org/article/674334bdf5f7459f96c657197e550eae2021-10-01T00:00:00Zhttps://www.mdpi.com/2075-4701/11/11/1736https://doaj.org/toc/2075-4701Laser powder bed fusion (L-PBF) has the potential to be applied in the production of titanium aircraft components with good mechanical properties, provided the technology has been qualified and accepted in the aviation industry. To achieve acceptance of the L-PBF technology in the aircraft industry, mechanical property data needed for the qualification process must be generated according to accepted testing standards. The impact toughness of Ti6Al4V extra low interstitial (ELI) specimens, produced through L-PBF followed by annealing, was investigated in this study. Charpy impact testing complying with American Standard Test Method (ASTM) E23 was performed with specimens annealed and conditioned at low temperature. On average, the toughness recorded for the specimens with 3D-printed and machined V-notches was 28 J and 31 J, respectively. These results are higher than the 24 J required in the aerospace industry. Finally, fractographic analyses of the fracture surfaces of the specimens were performed to determine the fracture mechanism of the Ti6Al4V(ELI) impact specimens.Lehlohonolo Francis MonahengWillie Bouwer du PreezClaudia PoleseMDPI AGarticleimpact toughnessaviation industryadditive manufacturingTi6Al4V(ELI)two-stage heat treatmentMining engineering. MetallurgyTN1-997ENMetals, Vol 11, Iss 1736, p 1736 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	impact toughness aviation industry additive manufacturing Ti6Al4V(ELI) two-stage heat treatment Mining engineering. Metallurgy TN1-997
spellingShingle	impact toughness aviation industry additive manufacturing Ti6Al4V(ELI) two-stage heat treatment Mining engineering. Metallurgy TN1-997 Lehlohonolo Francis Monaheng Willie Bouwer du Preez Claudia Polese Towards Qualification in the Aviation Industry: Impact Toughness of Ti6Al4V(ELI) Specimens Produced through Laser Powder Bed Fusion Followed by Two-Stage Heat Treatment
description	Laser powder bed fusion (L-PBF) has the potential to be applied in the production of titanium aircraft components with good mechanical properties, provided the technology has been qualified and accepted in the aviation industry. To achieve acceptance of the L-PBF technology in the aircraft industry, mechanical property data needed for the qualification process must be generated according to accepted testing standards. The impact toughness of Ti6Al4V extra low interstitial (ELI) specimens, produced through L-PBF followed by annealing, was investigated in this study. Charpy impact testing complying with American Standard Test Method (ASTM) E23 was performed with specimens annealed and conditioned at low temperature. On average, the toughness recorded for the specimens with 3D-printed and machined V-notches was 28 J and 31 J, respectively. These results are higher than the 24 J required in the aerospace industry. Finally, fractographic analyses of the fracture surfaces of the specimens were performed to determine the fracture mechanism of the Ti6Al4V(ELI) impact specimens.
format	article
author	Lehlohonolo Francis Monaheng Willie Bouwer du Preez Claudia Polese
author_facet	Lehlohonolo Francis Monaheng Willie Bouwer du Preez Claudia Polese
author_sort	Lehlohonolo Francis Monaheng
title	Towards Qualification in the Aviation Industry: Impact Toughness of Ti6Al4V(ELI) Specimens Produced through Laser Powder Bed Fusion Followed by Two-Stage Heat Treatment
title_short	Towards Qualification in the Aviation Industry: Impact Toughness of Ti6Al4V(ELI) Specimens Produced through Laser Powder Bed Fusion Followed by Two-Stage Heat Treatment
title_full	Towards Qualification in the Aviation Industry: Impact Toughness of Ti6Al4V(ELI) Specimens Produced through Laser Powder Bed Fusion Followed by Two-Stage Heat Treatment
title_fullStr	Towards Qualification in the Aviation Industry: Impact Toughness of Ti6Al4V(ELI) Specimens Produced through Laser Powder Bed Fusion Followed by Two-Stage Heat Treatment
title_full_unstemmed	Towards Qualification in the Aviation Industry: Impact Toughness of Ti6Al4V(ELI) Specimens Produced through Laser Powder Bed Fusion Followed by Two-Stage Heat Treatment
title_sort	towards qualification in the aviation industry: impact toughness of ti6al4v(eli) specimens produced through laser powder bed fusion followed by two-stage heat treatment
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/674334bdf5f7459f96c657197e550eae
work_keys_str_mv	AT lehlohonolofrancismonaheng towardsqualificationintheaviationindustryimpacttoughnessofti6al4velispecimensproducedthroughlaserpowderbedfusionfollowedbytwostageheattreatment AT williebouwerdupreez towardsqualificationintheaviationindustryimpacttoughnessofti6al4velispecimensproducedthroughlaserpowderbedfusionfollowedbytwostageheattreatment AT claudiapolese towardsqualificationintheaviationindustryimpacttoughnessofti6al4velispecimensproducedthroughlaserpowderbedfusionfollowedbytwostageheattreatment
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Towards Qualification in the Aviation Industry: Impact Toughness of Ti6Al4V(ELI) Specimens Produced through Laser Powder Bed Fusion Followed by Two-Stage Heat Treatment

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