Elastic constants of oriented Ti3AlC2 and Ti3SiC2 obtained via coherent inelastic neutron scattering

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dc.contributor.authorKirstein, Oen_AU
dc.contributor.authorGray, Ven_AU
dc.contributor.authorStampfl, APJen_AU
dc.contributor.authorKisi, EHen_AU
dc.date.accessioned2021-08-24T21:31:46Zen_AU
dc.date.available2021-08-24T21:31:46Zen_AU
dc.date.issued2017-07-12en_AU
dc.date.statistics2021-08-17en_AU
dc.description.abstractEffort has gone into understanding the properties of MAX phases and their archetypes, Ti3SiC2,and Ti3AlC2, is as these materials exhibit a desirable combination of metallic and ceramic properties [1]. Single crystal elastic constants(SEC), usually obtained using ab-initio calculations in combination with crystallographic information, indicate the materials to be isotropic [2]. While it is difficult to obtain single crystals it is possible to produce highly textured specimens. Using a method developed by Buchenau [3] allows using coherent inelastic neutron scattering to obtain an estimation of the SEC, and such an experiment was performed using the three-axis spectrometer TAIPAN at ANSTO [4]. Results for Ti3AlC2 agree with ab-initio calculations and the assumption of isotropy. For Ti3SiC2 experimental results of c44 = 402.7 GPa do not support isotropic values obtained from ab-initio calculations. Molecular dynamics simulations combined with inelastic neutron scatteringexperiments support the initial diffraction experiment and hence themicromechanical model that was used [5]. We present here a self-consistentdescription of the mechanical properties of the MAX phases Ti3SiC2and Ti3AlC2. [1] M. W. Barsoum et al. Annual Rev.Mat. Res. 41(2011); [2] M. F. Cover et al., J. Phys.Conds. Matt., 21(2009) 305403; [3] U. Buchenau, Sol. St. Comm.,Vol.32(12), 1979 ; [4] V. Gray et al.. J. Am. Ceram. Soc.1-6, 2016; [5] E.H. Kisi et al, J. of Phys.: Cond.Matter 22 (2010) 162202en_AU
dc.identifier.citationKirstein, O., Gray, V., Stampfl, A. P. J., & Kisi, E. H. (2017). Elastic constants of oriented Ti3AlC2 and Ti3SiC2 obtained via coherent inelastic neutron scattering. Paper presented at ICNS 2017 (International Conference on Neutron Scattering), Daejeon, South Korea, 9 to 13 July 2017. Retrieved from: http://www.icns2017.org/program.phpen_AU
dc.identifier.conferenceenddate13 July 2017en_AU
dc.identifier.conferencenameICNS 2017 (International Conference on Neutron Scattering)en_AU
dc.identifier.conferenceplaceDaejeon, South Koreaen_AU
dc.identifier.conferencestartdate9 July 2017en_AU
dc.identifier.editorsAkiniwa, Y. & Akita, K., & Suzki, H.en_AU
dc.identifier.urihttp://www.icns2017.org/program.phpen_AU
dc.identifier.urihttps://apo.ansto.gov.au/dspace/handle/10238/11462en_AU
dc.language.isoenen_AU
dc.publisherInternational Conference on Neutron Scatteringen_AU
dc.subjectMonocrystalsen_AU
dc.subjectElasticityen_AU
dc.subjectCrystallographyen_AU
dc.subjectNeutron diffractionen_AU
dc.subjectANSTOen_AU
dc.subjectSpectrometersen_AU
dc.titleElastic constants of oriented Ti3AlC2 and Ti3SiC2 obtained via coherent inelastic neutron scatteringen_AU
dc.typeConference Abstracten_AU
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