International Journal on Advanced Science, Engineering and Information Technology, Vol. 5 (2015) No. 4, pages: 329-334, DOI:10.18517/ijaseit.5.4.556

The Effects of Short-Time Solution Treatment and Short-Time Aging on Mechanical Properties of Ti-6Al-4V for Orthopaedic Applications

Abdul Ajiz, Gunawarman Gunawarman, Jon Affi

Abstract

The Ti-6Al-4Valloy is currently utilized as structural materials in artificial hip and knee joints, bone plates and screws, and artificial dental roots. It is mainly used in implants that replace hard tissue because has a high strength, good corrosion resistance, high biocompatibility compared to other conventional metallic biomaterials such as stainless steel and Co-Cr-Moalloys.The Ti-6Al-4V alloy with low Young’s modulus equivalent  to that of the cortical  bone is a simultaneously required in order to inhibit  bone absorption.Byshort-time solution treatment and subsquent short-time aging, the mechanical properties of  Ti–6Al–4V alloy can be improvedwhile maintaining a low Young’s modulus. The result showed optimum heat treatments were solution treatment at930 oC (1203 K) for 60 sand subsquent aging at 530 oC (803 K) for 40 s; the yield strength and tensile strength improved without reduction in ductility. Their maximum improvement rates of reached 21,6% and 21,1%, respectively and the Young’s modulus reduced  with maximum rates of reached 12%.

Keywords:

Ti-6Al-4V, short-time solution treatment, short-time aging, mechanical properties

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