Ductile and brittle transition behavior of titanium alloys in ultra-precision machining

Abstract Titanium alloys are extensively applied in biomedical industries due to their excellent material properties. However, they are recognized as difficult to cut materials due to their low thermal conductivity, which induces a complexity to their deformation mechanisms and restricts precise pro...

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Autores principales:	W. S. Yip, S. To
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2018
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/e07e54ba7917433b8b5ca58a529cef1f
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id	oai:doaj.org-article:e07e54ba7917433b8b5ca58a529cef1f
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spelling	oai:doaj.org-article:e07e54ba7917433b8b5ca58a529cef1f2021-12-02T15:08:41ZDuctile and brittle transition behavior of titanium alloys in ultra-precision machining10.1038/s41598-018-22329-22045-2322https://doaj.org/article/e07e54ba7917433b8b5ca58a529cef1f2018-03-01T00:00:00Zhttps://doi.org/10.1038/s41598-018-22329-2https://doaj.org/toc/2045-2322Abstract Titanium alloys are extensively applied in biomedical industries due to their excellent material properties. However, they are recognized as difficult to cut materials due to their low thermal conductivity, which induces a complexity to their deformation mechanisms and restricts precise productions. This paper presents a new observation about the removal regime of titanium alloys. The experimental results, including the chip formation, thrust force signal and surface profile, showed that there was a critical cutting distance to achieve better surface integrity of machined surface. The machined areas with better surface roughness were located before the clear transition point, defining as the ductile to brittle transition. The machined area at the brittle region displayed the fracture deformation which showed cracks on the surface edge. The relationship between depth of cut and the ductile to brittle transaction behavior of titanium alloys in ultra-precision machining(UPM) was also revealed in this study, it showed that the ductile to brittle transaction behavior of titanium alloys occurred mainly at relatively small depth of cut. The study firstly defines the ductile to brittle transition behavior of titanium alloys in UPM, contributing the information of ductile machining as an optimal machining condition for precise productions of titanium alloys.W. S. YipS. ToNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 8, Iss 1, Pp 1-8 (2018)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q W. S. Yip S. To Ductile and brittle transition behavior of titanium alloys in ultra-precision machining
description	Abstract Titanium alloys are extensively applied in biomedical industries due to their excellent material properties. However, they are recognized as difficult to cut materials due to their low thermal conductivity, which induces a complexity to their deformation mechanisms and restricts precise productions. This paper presents a new observation about the removal regime of titanium alloys. The experimental results, including the chip formation, thrust force signal and surface profile, showed that there was a critical cutting distance to achieve better surface integrity of machined surface. The machined areas with better surface roughness were located before the clear transition point, defining as the ductile to brittle transition. The machined area at the brittle region displayed the fracture deformation which showed cracks on the surface edge. The relationship between depth of cut and the ductile to brittle transaction behavior of titanium alloys in ultra-precision machining(UPM) was also revealed in this study, it showed that the ductile to brittle transaction behavior of titanium alloys occurred mainly at relatively small depth of cut. The study firstly defines the ductile to brittle transition behavior of titanium alloys in UPM, contributing the information of ductile machining as an optimal machining condition for precise productions of titanium alloys.
format	article
author	W. S. Yip S. To
author_facet	W. S. Yip S. To
author_sort	W. S. Yip
title	Ductile and brittle transition behavior of titanium alloys in ultra-precision machining
title_short	Ductile and brittle transition behavior of titanium alloys in ultra-precision machining
title_full	Ductile and brittle transition behavior of titanium alloys in ultra-precision machining
title_fullStr	Ductile and brittle transition behavior of titanium alloys in ultra-precision machining
title_full_unstemmed	Ductile and brittle transition behavior of titanium alloys in ultra-precision machining
title_sort	ductile and brittle transition behavior of titanium alloys in ultra-precision machining
publisher	Nature Portfolio
publishDate	2018
url	https://doaj.org/article/e07e54ba7917433b8b5ca58a529cef1f
work_keys_str_mv	AT wsyip ductileandbrittletransitionbehavioroftitaniumalloysinultraprecisionmachining AT sto ductileandbrittletransitionbehavioroftitaniumalloysinultraprecisionmachining
_version_	1718388094859739136

Ductile and brittle transition behavior of titanium alloys in ultra-precision machining

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