Journal article
Kinking nonlinear elastic deformation of Ti3AlC2, Ti2AlC, Ti3Al(C-0.5,N-0.5)(2) and Ti2Al(C-0.5,N-0.5)
Journal of alloys and compounds, v 498(1), pp 62-70
21 May 2010
Abstract
In this paper four ternary MAX phases, Ti3AlC2, Ti2AlC, Ti3Al(C-0.5,N-0.5)(2) and Ti2Al(C-0.5,N-0.5), were fabricated by hot pressing or hot isostatic pressing. The microstructures were characterized and found to be comprised of plate-like grains, 70-130 mu m in diameter and 5-10 mu m thick. Because all compositions traced fully reversible, reproducible, hysteretic loops during uniaxial cyclic compression tests they were classified as kinking nonlinear elastic (KNE) solids. When the results were analyzed using our recently developed microscale incipient kink band (IKB) model, the various relationships predicted among the three independently measured values - stress, nonlinear strain and dissipated energy - were exceptionally well adhered to. From the results we estimate the critical resolved shear stresses, CRSS, of the basal plane dislocations to range from 24 to 60 MPa. We also show that the relationship between the CRSS and grain size is of a Hall-Petch type. The reversible dislocation density is estimated to be (1-9) x 10(13) m(-2) at stresses that ranged from approximate to 300 to 650 MPa. (C) 2010 Elsevier B.V. All rights reserved.
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Details
- Title
- Kinking nonlinear elastic deformation of Ti3AlC2, Ti2AlC, Ti3Al(C-0.5,N-0.5)(2) and Ti2Al(C-0.5,N-0.5)
- Creators
- A. G. Zhou - Drexel UniversityM. W. Barsoum - Drexel University
- Publication Details
- Journal of alloys and compounds, v 498(1), pp 62-70
- Publisher
- Elsevier
- Number of pages
- 9
- Grant note
- DAAD19-03-1-0213 / Army Research Office
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- Materials Science and Engineering
- Web of Science ID
- WOS:000278709700012
- Scopus ID
- 2-s2.0-77952102992
- Other Identifier
- 991019168630604721
InCites Highlights
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- Collaboration types
- Domestic collaboration
- International collaboration
- Web of Science research areas
- Chemistry, Physical
- Materials Science, Multidisciplinary
- Metallurgy & Metallurgical Engineering