Wear behavior of Ti6Al4V biomedical alloys processed by selective laser melting, hot pressing and conventional casting

被引：126

作者：

Bartolomeu, F. ^{[1
]}

Buciumeanu, M. ^{[2
]}

Pinto, E. ^{[3
]}

Alves, N. ^{[3
]}

Silva, F. S. ^{[1
]}

Carvalho, O. ^{[1
]}

Miranda, G. ^{[1
]}

机构：

[1] Univ Minho, Ctr Microelectro Mech Syst CMEMS UMinho, P-4800058 Azurem, Guimaraes, Portugal

[2] Dunarea de Jos Univ Galati, Cross Border Fac Humanities Econ & Engn, Domneasca 47, Galati 800008, Romania

[3] Polytech Inst Leiria, Ctr Rapid & Sustainable Prod Dev, Rua Gen Norton de Matos,Apartado 4133, P-2411901 Leiria, Portugal

来源：

TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA | 2017年 / 27卷 / 04期

关键词：

biomedical alloy; Ti6Al4V alloy; wear behavior; microstructure; selective laser melting; hot pressing; casting; MECHANICAL-PROPERTIES; DENSIFICATION BEHAVIOR; PREDICTIVE MODELS; STAINLESS-STEEL; MICROSTRUCTURE; TITANIUM; CORROSION; EVOLUTION;

D O I：

10.1016/S1003-6326(17)60060-8

中图分类号：

TF [冶金工业];

学科分类号：

080601 [冶金物理化学];

摘要：

The aim of this work was to study the influence of the processing route on the microstructural constituents, hardness and tribological (wear and friction) behavior of Ti6Al4V biomedical alloy. In this sense, three different processing routes were studied: conventional casting, hot pressing and selective laser melting. A comprehensive metallurgical, mechanical and tribological characterization was performed by X-ray diffraction analysis, Vickers hardness tests and reciprocating ball-on-plate wear tests of Ti6Al4V/Al2O3 sliding pairs. The results showed a great influence of the processing route on the microstructural constituents and consequent differences on hardness and wear performance. The highest hardness and wear resistance were obtained for Ti6Al4V alloy produced by selective laser melting, due to a markedly different cooling rate that leads to significantly different microstructure when compared to hot pressing and casting. This study assesses and confirms that selective laser melting is potential to produce customized Ti6Al4V implants with improved wear performance.

引用

页码：829 / 838

页数：10

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