THE EFFECT OF COLD ROLLING O MICROSTRUCTURE AND MECHANICAL PROPERTIES OF TI-35NB-6TA ALLOY

1 MÁLEK Jaroslav
Co-authors:
1 HNILICA František 1 VESELÝ Jaroslav 2 KOLAŘÍK Kamil 3 ČAPEK Jiří
Institutions:
1 UJP PRAHA a.s., Nad Kamínkou 1345, Praha-Zbraslav 156 00, Czech Republic
2 University of West Bohemia, Plzeň, Czech Republic
3 CTU in Prague, Prague, Czech Republic
Conference:
24th International Conference on Metallurgy and Materials, Hotel Voronez I, Brno, Czech Republic, EU, June 3rd - 5th 2015
Proceedings:
Proceedings 24th International Conference on Metallurgy and Materials
Pages:
1294-1299
ISBN:
978-80-87294-58-1
ISSN:
2694-9296
Published:
12th January 2015
Proceedings of the conference were published in Web of Science and Scopus.
Metrics:
231 views / 99 downloads
Abstract

The beta titanium alloys are widely used for hard tissue replacements due to their properties (e.g. high strength, low Young’s modulus or biocompatibility). Mechanical properties are dependent on microstructure which can be controlled through suitable thermo-mechanical treatment. The effect of cold rolling on texture evolution and mechanical properties has been studied in this paper. Hot forged, solution treated ( / 0.5 h / water quenched) Ti-35Nb-6Ta alloy has been cold rolled with thickness reduction 40, 60 and 80 and 95%. The texture evolution has been studied by using X-ray diffraction analysis and EBSD analysis. The {100} <110> texture is dominant for all studied specimens and became more distinct with increasing thickness reduction. Another texture evolution from {211} <110> to {111} <112> was observed with increasing thickness reduction. The tensile strength increased with thickness reduction from 600 to 830 MPa. On the other hand elongation decreased from 32 to 9%. The Young’s modulus value has been determined within range of 43 to 55 GPa.

Keywords: beta-titanium alloys, mechanical properties, texture, cold rolling

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