Book chapter
Elastic and Mechanical Properties of the MAX Phases
Annual review of materials research, pp 195-227
01 Jan 2011
Abstract
The more than 60 ternary carbides and nitrides, with the general formula M(n+1)AX(n)-where n = 1, 2, or 3; M is an early transition metal; A is an A-group element (a subset of groups 13-16); and Xis C and/or N-represent a new class of layered solids, where Mn+1Xn layers are interleaved with pure A-group element layers. The growing interest in the M(n+1)AX(n) phases lies in their unusual, and sometimes unique, set of properties that can be traced back to their layered nature and the fact that basal dislocations multiply and are mobile at room temperature. Because of their chemical and structural similarities, the MAX phases and their corresponding MX phases share many physical and chemical properties. in this paper we review our current understanding of the elastic and mechanical properties of bulk MAX phases where they differ significantly from their MX counterparts. Elastically the MAX phases are in general quite stiff and elastically isotropic. The MAX phases are relatively soft (2-8 GPa), are most readily machinable, and are damage tolerant. Some of them are also lightweight and resistant to thermal shock, oxidation, fatigue, and creep. in addition, they behave as nonlinear elastic solids, dissipating 25% of the mechanical energy during compressive cycling loading of up to 1 GPa at room temperature. At higher temperatures, they undergo a brittle-to-plastic transition, and their mechanical behavior is a strong function of deformation rate.
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Details
- Title
- Elastic and Mechanical Properties of the MAX Phases
- Creators
- Michel W. Barsoum - Drexel UniversityMiladin Radovic - Mitchell Institute
- Contributors
- D R Clarke (Editor)P Fratzl (Editor)
- Publication Details
- Annual review of materials research, pp 195-227
- Series
- Annual Review of Materials Research
- Publisher
- Annual Reviews; PALO ALTO
- Number of pages
- 33
- Resource Type
- Book chapter
- Language
- English
- Academic Unit
- Materials Science and Engineering
- Web of Science ID
- WOS:000294028600008
- Scopus ID
- 2-s2.0-79960109937
- Other Identifier
- 991019167754804721
InCites Highlights
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- Collaboration types
- Domestic collaboration
- Web of Science research areas
- Materials Science, Multidisciplinary