Effects of Aging Heat Treatment on the Microstructure of Ti-Nb and Ti-Nb-Sn Alloys Employed as Biomaterials

Eder S.N. Lopes; Alessandra Cremasco; Rodrigo Contieri; Rubens Caram

doi:10.4028/www.scientific.net/AMR.324.61

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HomeAdvanced Materials ResearchAdvanced Materials Research Vol. 324Effects of Aging Heat Treatment on the...

Effects of Aging Heat Treatment on the Microstructure of Ti-Nb and Ti-Nb-Sn Alloys Employed as Biomaterials

Abstract:

The mechanical behavior of β titanium alloys applied as orthopedic biomaterials depends directly on their microstructural features, and can be improved by tailoring the microstructure through the control of their phase transformations. The aim of this investigation is to discuss phase transformations during the aging heat treatment of β Ti-30Nb and β Ti-30Nb-2Sn alloys and to correlate microstructure and mechanical behavior. The results of high temperature XRD experiments showed decomposition of orthorhombic α” phase, followed by the precipitation of ω and α phases. The mechanical behavior of Ti-Nb and Ti-Nb-Sn alloys was found to be highly sensitive to the microstructural changes caused by the addition of Sn and by heat treatments.

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Periodical:

Advanced Materials Research (Volume 324)

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61-64

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.324.61

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Online since:

August 2011

Authors:

Eder S.N. Lopes, Alessandra Cremasco, Rodrigo Contieri, Rubens Caram

Keywords:

Aging Heat Treatment, Phase Transformation, Titanium Alloy, X-Ray Diffraction (XRD)

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