首页|Influence of cold work in the elastic modulus of the Ti-16.2Hf-24.8Nb-1Zr alloy characterized by instrumented nanoindentation
Influence of cold work in the elastic modulus of the Ti-16.2Hf-24.8Nb-1Zr alloy characterized by instrumented nanoindentation
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Abstract. Nowadays, β type Ti-based alloys have been developed for load transfer clinical applications due to their superelasticity, shape memory effect, low elastic modulus and high damping capacity [1]. These properties promote bone regeneration and make them promising candidates for being used in load transfer implantology. The objective of the present work is to achieve a material with shape memory properties and/or low elastic modulus. The influence of cold work on the thermoelastic martensitic transformation and elastic modulus of the Ti-16.2Hf-24.8Nb-1Zr alloy has been investigated to determine optimal conditions. The homogenized vacuum arc melted button was heat treated at 1100℃ during 2 hours and quenched. Samples of each alloy were microstructurally and mechanically characterized after being cold rolled from 5 up to 95%. The elastic response for each condition was evaluated by instrumented nanoindentation by using a Berkovich tip and a spherical tip. A decrease in elastic modulus was observed when increasing the cold work percentage. The lowest value, 44 GPa, similar to that of cortical bone, was found in the 95% cold worked condition.
nanoindentationshape memory effectlow elastic modulusNi-free Ti alloys
M. Gonzalez、J.Pena、J.M. Manero、F.J. Gil
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Department of Materials Science and Metallurgy, Universitat Politecnica de Catalunya, Avda. Diagonal 647, Barcelona, 08028, Spain
Department of Materials Science and Metallurgy, Universitat Politecnica de Catalunya, Avda. Diagonal 647, Barcelona, 08028, Spain Materials science, Elisava Escola Superior de Disseny, C/Ample 11-13, Barcelona, 08002, Spain
NETL
NSTL
Trans Tech Publications Ltd
