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Significant elastic anisotropy in Ti1−xAlxN alloys
Linköping University, Department of Physics, Chemistry and Biology, Theoretical Physics . Linköping University, The Institute of Technology.
Linköping University, Department of Physics, Chemistry and Biology, Theoretical Physics . Linköping University, The Institute of Technology.
Linköping University, Department of Physics, Chemistry and Biology, Nanostructured Materials . Linköping University, The Institute of Technology.
Argonne National Laboratory, Illinois, USA.
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2010 (English)In: Applied Physics Letters, ISSN 0003-6951, E-ISSN 1077-3118, Vol. 97, no 23, 231902-231904 p.Article in journal (Refereed) Published
Abstract [en]

Strong compositional-dependent elastic properties have been observed theoretically and experimentally in Ti1−xAlxN alloys. The elastic constant, C11, changes by more than 50% depending on the Al-content. Increasing the Al-content weakens the average bond strength in the local octahedral arrangements resulting in a more compliant material. On the other hand, it enhances the directional (covalent) nature of the nearest neighbor bonds that results in greater elastic anisotropy and higher sound velocities. The strong dependence of the elastic properties on the Al-content offers new insight into the detailed understanding of the spinodal decomposition and age hardening in Ti1−xAlxN alloys.

Place, publisher, year, edition, pages
American Institute of Physics , 2010. Vol. 97, no 23, 231902-231904 p.
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Natural Sciences
Identifiers
URN: urn:nbn:se:liu:diva-62980DOI: 10.1063/1.3524502ISI: 000285364000028OAI: oai:DiVA.org:liu-62980DiVA: diva2:375442
Note
Original Publication: Ferenc Tasnádi, Igor Abrikosov, Lina Rogström, Jonathan Almer, Mats Johansson and Magnus Odén, Significant elastic anisotropy in Ti1-xAlxN alloys, 2010, Applied Physics Letters, (97), 23, 231902-231904. http://dx.doi.org/doi:10.1063/1.3524502 Copyright: American Institute of Physics http://www.aip.org/ Available from: 2010-12-08 Created: 2010-12-08 Last updated: 2017-12-11

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Tasnádi, FerencAbrikosov, IgorRogström, LinaOdén, Magnus

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