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The International Journal of Advanced Manufacturing Technology

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19-05-2019 | ORIGINAL ARTICLE

Effect of heat treatments on microstructure/small-scale properties of additive manufactured Ti-6Al-4V

Authors: Muztahid Muhammad, Jonathan W. Pegues, Nima Shamsaei, Meysam Haghshenas

Published in: The International Journal of Advanced Manufacturing Technology | Issue 9-12/2019

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Abstract

In the present study, the effect of various heat treatments on the microstructure and micromechanical properties of a Ti-6Al-4V alloy processed by a laser powder bed fusion (L-PBF) technique is investigated. Heat treatment cycles employed in this study include solutionizing at 950 °C (for 1 h) followed by three different cooling rates (water quenching, air cooling, and furnace cooling) as well as solutionizing followed by water quenching and artificial aging. To assess the small-scale properties, a nanoindentation testing technique is employed. Microstructural quantitative analyses (i.e., optical microscopy and scanning electron microscopy) were performed extensively on the as-fabricated and heat-treated samples. Artificially aged specimens showed the highest microhardness of all the heat-treated samples, followed by air-cooled and furnace-cooled samples.

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Title: Effect of heat treatments on microstructure/small-scale properties of additive manufactured Ti-6Al-4V
Authors: Muztahid Muhammad
Jonathan W. Pegues
Nima Shamsaei
Meysam Haghshenas
Publication date: 19-05-2019
Publisher: Springer London
Published in: The International Journal of Advanced Manufacturing Technology / Issue 9-12/2019
Print ISSN: 0268-3768
Electronic ISSN: 1433-3015
DOI: https://doi.org/10.1007/s00170-019-03789-w

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