Effect of build direction on the microhardness and dry sliding wear behaviour of laser additive manufactured Ti-6Al-4V

Chandramohan Palanisamy; Shepherd Bhero; Babatunde Abiodun Obadele; Peter Apata Olubambi

doi:10.1016/j.matpr.2017.11.097

Effect of build direction on the microhardness and dry sliding wear behaviour of laser additive manufactured Ti-6Al-4V

Chandramohan Palanisamy, Shepherd Bhero, Babatunde Abiodun Obadele, Peter Apata Olubambi

University of Johannesburg

Research output: Contribution to journal › Article › peer-review

22 Citations (Scopus)

Abstract

This work presents micro structural and tribological behaviour of Ti-6Al-4V fabricated by direct metal laser sintering technique. The laser sintering was carried out at laser power of 170 W in an argon atmosphere. The microstructure, phase composition, micro hardness and wear study were determined. It has been found that specimens built vertically (VB) contained vanadium carbide (VC) and titanium oxide (TiO) phases in the present of α and β phases resulting in higher micro hardness as compared to horizontal build (HB) specimens. Wear volume loss was determined in a dry sliding wear configuration. An increase in applied load from 5 N to 25 N resulted in an increment in wear volume loss. The presence of delamination could be observed on the worn surface of HB specimen.

Original language	English
Pages (from-to)	397-402
Number of pages	6
Journal	Materials Today: Proceedings
Volume	5
Issue number	1
DOIs	https://doi.org/10.1016/j.matpr.2017.11.097
Publication status	Published - 2018

Keywords

Hardness
Laser
Sintering
Titanium
Wear

ASJC Scopus subject areas

General Materials Science

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.1016/j.matpr.2017.11.097

Cite this

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abstract = "This work presents micro structural and tribological behaviour of Ti-6Al-4V fabricated by direct metal laser sintering technique. The laser sintering was carried out at laser power of 170 W in an argon atmosphere. The microstructure, phase composition, micro hardness and wear study were determined. It has been found that specimens built vertically (VB) contained vanadium carbide (VC) and titanium oxide (TiO) phases in the present of α and β phases resulting in higher micro hardness as compared to horizontal build (HB) specimens. Wear volume loss was determined in a dry sliding wear configuration. An increase in applied load from 5 N to 25 N resulted in an increment in wear volume loss. The presence of delamination could be observed on the worn surface of HB specimen.",

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AU - Palanisamy, Chandramohan

AU - Bhero, Shepherd

AU - Abiodun Obadele, Babatunde

AU - Apata Olubambi, Peter

PY - 2018

Y1 - 2018

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AB - This work presents micro structural and tribological behaviour of Ti-6Al-4V fabricated by direct metal laser sintering technique. The laser sintering was carried out at laser power of 170 W in an argon atmosphere. The microstructure, phase composition, micro hardness and wear study were determined. It has been found that specimens built vertically (VB) contained vanadium carbide (VC) and titanium oxide (TiO) phases in the present of α and β phases resulting in higher micro hardness as compared to horizontal build (HB) specimens. Wear volume loss was determined in a dry sliding wear configuration. An increase in applied load from 5 N to 25 N resulted in an increment in wear volume loss. The presence of delamination could be observed on the worn surface of HB specimen.

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KW - Sintering

KW - Titanium

KW - Wear

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Effect of build direction on the microhardness and dry sliding wear behaviour of laser additive manufactured Ti-6Al-4V

Abstract

Keywords

ASJC Scopus subject areas

UN SDGs

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