Cold swaging and recrystallization annealling of Ti-Nb-Ta-Zr-O alloy - microstructure, texture and microhardness evolution

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F26316919%3A_____%2F18%3AN0000221" target="_blank" >RIV/26316919:_____/18:N0000221 - isvavai.cz</a>
Result on the web
<a href="https://www.scientific.net/MSF.941.1132" target="_blank" >https://www.scientific.net/MSF.941.1132</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.4028/www.scientific.net/MSF.941.1132" target="_blank" >10.4028/www.scientific.net/MSF.941.1132</a>

Result language
angličtina
Original language name
Cold swaging and recrystallization annealling of Ti-Nb-Ta-Zr-O alloy - microstructure, texture and microhardness evolution
Original language description
Metastable beta-Ti alloy Ti-35.3Nb-7.3Zr-5.7Ta-0.7O (wt. %) shows properties desirable for use as an implant material. However, very large grains (with the size of 0.5 - 3 mm) negatively affect the strength and fatigue resistance. Combination of cold-swaging and recrystallization annealing is used to refine the microstructure. Microstructure after cold swaging and after annealing is studied using scanning electron microscope by electron back-scatter diffraction measurements. Grain size and texture is determined and homogeneity of deformation inside the grains is discussed. Microhardness maps are measured in the cold-swaged samples. It is found that microhardness and thus also the deformation is higher in the center of each rod however the grains retain their original size. Annealing leads to recrystallization that is complete or nearly complete at the temperatures of 1000 degrees C and more. Annealing at 1000 degrees C for 15 min yields grain size of around 100 mu m. This grain size is believed to increase the fatigue performance to satisfactory values.
Czech name
—
Czech description
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Project
<a href="/en/project/FV20147" target="_blank" >FV20147: New generation of joint implants manufactured from a beta titanium alloy</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year
2018
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Article name in the collection
THERMEC 2018: 10TH INTERNATIONAL CONFERENCE ON PROCESSING AND MANUFACTURING OF ADVANCED MATERIALS
ISBN
978-3-0357-1208-7
ISSN
0255-5476
e-ISSN
—
Number of pages
5
Pages from-to
1132-1136
Publisher name
TRANS TECH PUBLICATIONS LTD
Place of publication
Zurich
Event location
Paříž
Event date
Jul 9, 2018
Type of event by nationality
WRD - Celosvětová akce
UT code for WoS article
000468152500185

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