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HomeKey Engineering MaterialsKey Engineering Materials Vol. 727Microstructure and Mechanical Properties of...

Microstructure and Mechanical Properties of Ti-Nb-Zr Alloys Prepared by Spark Plasma Sintering

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Abstract:

Biomedical Ti-24Nb-2Zr (at.%) alloy is prepared by powder metallurgy method including high energy mechanical milling and spark plasma sintering (SPS). Compact bulk specimens, with density equivalent to arc melted ones, are obtained after SPS for 10 min with sintering temperatures above 850 °C. Higher temperature sintering promotes combination of raw element powders and diffusion of element, and results in a single β phase in the obtained specimens. Microhardness, compressive strength and plasticity increase with rising sintering temperatures. As the specimens are further heat treated at 850 °C for 1h, element distribution becomes much more uniformly together with releasing of internal stress and greater solution hardening. The bulk specimens, obtained by sintering at 1100 °C and 1200 °C, shows higher strength and plasticity, which are suitable for biomedical applications. SPS technology can be used as a rapid fabrication method to prepare Ti alloy products.

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Functional Materials Research II

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Periodical:

Key Engineering Materials (Volume 727)

Pages:

136-142

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.727.136

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Online since:

January 2017

Authors:

Qiang Li*, Guang Hao Ma, Xu Yan Liu, Zhi Kang Tu, Deng Pan

Keywords:

Compression, Microhardness, Spark Plasma Sintering, Titanium Alloy

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© 2017 Trans Tech Publications Ltd. All Rights Reserved

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