Novel Zr-Rich Alloys of Ternary Ti-Zr-Nb System with Large Superelastic Recovery Strain
Four novel superelastic alloys, Ti-41Zr-12Nb, Ti-42Zr-11Nb, Ti-43Zr-10Nb, Ti-44Zr-10Nb (at.%), were obtained and studied in terms of their microstructure and mechanical properties. The obtained alloys were subjected to thermomechanical treatment, providing alloys with a pronounced superelastic behav...
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2022-01-01
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author | Danil Barilyuk Andrey Bazlov Natalia Arkharova Tatyana Teplyakova Anton Konopatsky Sergey Prokoshkin |
author_facet | Danil Barilyuk Andrey Bazlov Natalia Arkharova Tatyana Teplyakova Anton Konopatsky Sergey Prokoshkin |
author_sort | Danil Barilyuk |
collection | DOAJ |
description | Four novel superelastic alloys, Ti-41Zr-12Nb, Ti-42Zr-11Nb, Ti-43Zr-10Nb, Ti-44Zr-10Nb (at.%), were obtained and studied in terms of their microstructure and mechanical properties. The obtained alloys were subjected to thermomechanical treatment, providing alloys with a pronounced superelastic behavior. Materials phase composition and microstructure were studied using XRD and SEM methods. Based on the XRD results, maximum lattice strains in the <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><msub><mrow><mfenced close="]" open="["><mrow><mn>011</mn></mrow></mfenced></mrow><mi>β</mi></msub></mrow></semantics></math></inline-formula> direction were calculated as 5.9%, 6.3%, 7.5%, and 7.2% for Ti-41Zr-12Nb, Ti-42Zr-11Nb, Ti-43Zr-10Nb, and Ti-44Zr-10Nb alloys, respectively. Mechanical properties of the thermomechanically-treated alloys were studied by Vickers microhardness testing, static tensile testing, and superelastic mechanical cycling. The maximum superelastic recovery strains attained at room temperature was 3.7%, 1.9%, 3.2%, and 3.0% for the Ti-41Zr-12Nb, Ti-42Zr-11Nb, Ti-43Zr-10Nb, and Ti-44Zr-10Nb alloys, respectively. Ti-41Zr-12Nb alloy demonstrated the highest ductility, with relative elongation to failure of over 20%, combined with the total recovery strain of more than 6%. Obtained results indicate that Ti-41Zr-12Nb is one the most promising alloys of the Ti-Zr-Nb system, with quite perfect superelastic behavior at room temperature. |
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spelling | doaj.art-849e539347764302a50775dbdb50aaf62023-11-23T21:06:18ZengMDPI AGMetals2075-47012022-01-0112218510.3390/met12020185Novel Zr-Rich Alloys of Ternary Ti-Zr-Nb System with Large Superelastic Recovery StrainDanil Barilyuk0Andrey Bazlov1Natalia Arkharova2Tatyana Teplyakova3Anton Konopatsky4Sergey Prokoshkin5National University of Science and Technology “MISIS”, 119049 Moscow, RussiaNational University of Science and Technology “MISIS”, 119049 Moscow, RussiaA.V. Shubnikov Institute of Crystallography, FSRC “Crystallography and Photonics” RAS, 119333 Moscow, RussiaNational University of Science and Technology “MISIS”, 119049 Moscow, RussiaNational University of Science and Technology “MISIS”, 119049 Moscow, RussiaNational University of Science and Technology “MISIS”, 119049 Moscow, RussiaFour novel superelastic alloys, Ti-41Zr-12Nb, Ti-42Zr-11Nb, Ti-43Zr-10Nb, Ti-44Zr-10Nb (at.%), were obtained and studied in terms of their microstructure and mechanical properties. The obtained alloys were subjected to thermomechanical treatment, providing alloys with a pronounced superelastic behavior. Materials phase composition and microstructure were studied using XRD and SEM methods. Based on the XRD results, maximum lattice strains in the <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><msub><mrow><mfenced close="]" open="["><mrow><mn>011</mn></mrow></mfenced></mrow><mi>β</mi></msub></mrow></semantics></math></inline-formula> direction were calculated as 5.9%, 6.3%, 7.5%, and 7.2% for Ti-41Zr-12Nb, Ti-42Zr-11Nb, Ti-43Zr-10Nb, and Ti-44Zr-10Nb alloys, respectively. Mechanical properties of the thermomechanically-treated alloys were studied by Vickers microhardness testing, static tensile testing, and superelastic mechanical cycling. The maximum superelastic recovery strains attained at room temperature was 3.7%, 1.9%, 3.2%, and 3.0% for the Ti-41Zr-12Nb, Ti-42Zr-11Nb, Ti-43Zr-10Nb, and Ti-44Zr-10Nb alloys, respectively. Ti-41Zr-12Nb alloy demonstrated the highest ductility, with relative elongation to failure of over 20%, combined with the total recovery strain of more than 6%. Obtained results indicate that Ti-41Zr-12Nb is one the most promising alloys of the Ti-Zr-Nb system, with quite perfect superelastic behavior at room temperature.https://www.mdpi.com/2075-4701/12/2/185materials sciencetitanium alloyssuperelasticitybiocompatibility |
spellingShingle | Danil Barilyuk Andrey Bazlov Natalia Arkharova Tatyana Teplyakova Anton Konopatsky Sergey Prokoshkin Novel Zr-Rich Alloys of Ternary Ti-Zr-Nb System with Large Superelastic Recovery Strain Metals materials science titanium alloys superelasticity biocompatibility |
title | Novel Zr-Rich Alloys of Ternary Ti-Zr-Nb System with Large Superelastic Recovery Strain |
title_full | Novel Zr-Rich Alloys of Ternary Ti-Zr-Nb System with Large Superelastic Recovery Strain |
title_fullStr | Novel Zr-Rich Alloys of Ternary Ti-Zr-Nb System with Large Superelastic Recovery Strain |
title_full_unstemmed | Novel Zr-Rich Alloys of Ternary Ti-Zr-Nb System with Large Superelastic Recovery Strain |
title_short | Novel Zr-Rich Alloys of Ternary Ti-Zr-Nb System with Large Superelastic Recovery Strain |
title_sort | novel zr rich alloys of ternary ti zr nb system with large superelastic recovery strain |
topic | materials science titanium alloys superelasticity biocompatibility |
url | https://www.mdpi.com/2075-4701/12/2/185 |
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