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Ductility improvement of additively manufactured Ti6AL4V alloy through heat treatment / Siti Najihah Rahmad

Selective laser melting (SLM) is one of additive manufacturing (AM) technique that enable the production of high strength Titanium Ti6Al4V alloys that are currently demanded by bioengineering applications. However, Titanium Ti6A14V alloys exhibited the lowest ductility as compared to other bioengine...

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Main Author: Rahmad, Siti Najihah
Format: Thesis
Language:English
Published: 2022
Subjects:
Heat
Online Access:https://ir.uitm.edu.my/id/eprint/75756/1/75756.pdf
https://ir.uitm.edu.my/id/eprint/75756/
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spelling my.uitm.ir.757562023-03-31T01:55:08Z https://ir.uitm.edu.my/id/eprint/75756/ Ductility improvement of additively manufactured Ti6AL4V alloy through heat treatment / Siti Najihah Rahmad Rahmad, Siti Najihah Heat Selective laser melting (SLM) is one of additive manufacturing (AM) technique that enable the production of high strength Titanium Ti6Al4V alloys that are currently demanded by bioengineering applications. However, Titanium Ti6A14V alloys exhibited the lowest ductility as compared to other bioengineering material which is due to the rapid cooling of SLM process that produced acicular α' martensite. Thus, in this study, the effect of different heat treatment temperatures of SLM fabricated Ti6A14V alloy sample on its microconstituents and mechanical properties were investigated with the objective to increase the ductility of Ti6A14V alloys. The selected heating temperatures were 800 °C, 850 °C, 950 °C and 1050 °C before samples were furnace cooled. The morphological behaviour of the samples before and after heat treatment were observed using optical microscopes, SEM, and XRD. Both tensile strength and Vickers microhardness were also measured. The results indicated that heat treatment successfully reduced the production of α' martensite and induced formation of α and β lath which led to increment of ductility of the samples. Both tensile strength and hardness values reduced after heat treatment but the values are still appreciable for bioengineering applications. In conclusion, heat treated samples showed increment of ductility values of more than 60% thus achieving the objectives of the studies. 2022 Thesis NonPeerReviewed text en https://ir.uitm.edu.my/id/eprint/75756/1/75756.pdf Ductility improvement of additively manufactured Ti6AL4V alloy through heat treatment / Siti Najihah Rahmad. (2022) Masters thesis, thesis, Universiti Teknologi MARA (UiTM).
institution Universiti Teknologi Mara
building Tun Abdul Razak Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Teknologi Mara
content_source UiTM Institutional Repository
url_provider http://ir.uitm.edu.my/
language English
topic Heat
spellingShingle Heat
Rahmad, Siti Najihah
Ductility improvement of additively manufactured Ti6AL4V alloy through heat treatment / Siti Najihah Rahmad
description Selective laser melting (SLM) is one of additive manufacturing (AM) technique that enable the production of high strength Titanium Ti6Al4V alloys that are currently demanded by bioengineering applications. However, Titanium Ti6A14V alloys exhibited the lowest ductility as compared to other bioengineering material which is due to the rapid cooling of SLM process that produced acicular α' martensite. Thus, in this study, the effect of different heat treatment temperatures of SLM fabricated Ti6A14V alloy sample on its microconstituents and mechanical properties were investigated with the objective to increase the ductility of Ti6A14V alloys. The selected heating temperatures were 800 °C, 850 °C, 950 °C and 1050 °C before samples were furnace cooled. The morphological behaviour of the samples before and after heat treatment were observed using optical microscopes, SEM, and XRD. Both tensile strength and Vickers microhardness were also measured. The results indicated that heat treatment successfully reduced the production of α' martensite and induced formation of α and β lath which led to increment of ductility of the samples. Both tensile strength and hardness values reduced after heat treatment but the values are still appreciable for bioengineering applications. In conclusion, heat treated samples showed increment of ductility values of more than 60% thus achieving the objectives of the studies.
format Thesis
author Rahmad, Siti Najihah
author_facet Rahmad, Siti Najihah
author_sort Rahmad, Siti Najihah
title Ductility improvement of additively manufactured Ti6AL4V alloy through heat treatment / Siti Najihah Rahmad
title_short Ductility improvement of additively manufactured Ti6AL4V alloy through heat treatment / Siti Najihah Rahmad
title_full Ductility improvement of additively manufactured Ti6AL4V alloy through heat treatment / Siti Najihah Rahmad
title_fullStr Ductility improvement of additively manufactured Ti6AL4V alloy through heat treatment / Siti Najihah Rahmad
title_full_unstemmed Ductility improvement of additively manufactured Ti6AL4V alloy through heat treatment / Siti Najihah Rahmad
title_sort ductility improvement of additively manufactured ti6al4v alloy through heat treatment / siti najihah rahmad
publishDate 2022
url https://ir.uitm.edu.my/id/eprint/75756/1/75756.pdf
https://ir.uitm.edu.my/id/eprint/75756/
_version_ 1762396089538838528
score 13.211869

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