Deformation mechanisms during high temperature tensile creep of Ti3AlC2 MAX phase

Drouelle, Elodie; Joulain, Anne; Cormier, Jonathan; Gauthier‐Brunet, V.; Villechaise, Patrick; Dubois, S.; Sallot, Pierre

doi:10.1016/j.jallcom.2016.09.194

Cited by 50 publications

(23 citation statements)

References 33 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…10) not readily seen in the optical micrograph such as grain buckling, grain delamination, kink band formation and grain boundary cracking can be clearly seen. This damage tolerance observed is a hallmark of the MAX phases and has been attributed to basal slip activation as reported elsewhere [35,36]. Thus in practical applications, the importance of this high-damage tolerance phenomemon i.e., ability of this material to confine damage to small area around indentations cannot be overemphasized.…”

Section: Density and Vickers Hardnesssupporting

confidence: 61%

Microstructural evolution and wear mechanism of Ti3AlC2 – Ti2AlC dual MAX phase composite consolidated by spark plasma sintering (SPS)

Magnus

Cooper

Sharp

et al. 2019

Wear

View full text Add to dashboard Cite

In this work, we report the report the synthesis, deformation and tribological behaviour of a novel Ti3AlC2-Ti2AlC MAX phase composite metallo-ceramic. The dual MAX phase composite was synthesized by spark plasma sintering under vacuum environment using Ti, Al, and C precursor powders. The deformation mechanism and the tribological behaviour were studied and analyzed by SEM, TEM, and Raman spectroscopy. The transition in friction and wear as well as the operative wear mechanisms involved were further discussed. Detailed analysis of the worn surface showed that the Ti3AlC2-Ti2AlC MAX phase composite is intrinsically self-lubricating. 1.

show abstract

Section: Density and Vickers Hardnesssupporting

confidence: 61%

Microstructural evolution and wear mechanism of Ti3AlC2 – Ti2AlC dual MAX phase composite consolidated by spark plasma sintering (SPS)

Magnus

Cooper

Sharp

et al. 2019

Wear

View full text Add to dashboard Cite

show abstract

“…The creep behaviour of dense Ti2AlC has also been presented in the literature [30]: the parameters Q and n of Ti2AlC were 362 kJ/mol and 2.5, respectively, and the observation of the fracture surface indicated that dislocation creep with possibly grain boundary sliding was the dominant creep mechanism. The creep mechanism of Ti3AlC2 has been also studied recently [31]: the parameter n was 2.34-2.50, and based on TEM observations it was concluded that creep deformation was governed by grain boundary sliding, either through dislocation or diffusion. (Note that most of these investigations still suggest a necessity for further investigations to clarify the creep mechanism.…”

Section: Creep Mechanism Of Dense Cr2alcmentioning

confidence: 99%

High temperature compressive creep of dense and porous Cr2AlC in air

Araki

González‐Julián

Malzbender

2019

Journal of the European Ceramic Society

View full text Add to dashboard Cite

The creep behaviours of the dense and porous Cr2AlC ceramics were investigated, being the first study on creep behaviour of not only Cr2AlC but also porous MAX phase. The creep rate of the porous Cr2AlC measured during cooling was significantly lower than the one during heating due to oxide and carbide scales formed during the creep tests at the high temperatures, whilst the dense Cr2AlC possesses consistent creep rates during heating and cooling. The formation of these scales led to the reinforcement of the porous ceramics and some healing of defects, which significantly improved the creep resistance. A comparison with other porous alloys and ceramics revealed that the oxidised porous Cr2AlC has a high potential as a refractory material, especially considering its machinability and lightweight .

show abstract

“…The crystallographic structure of the MAX phases with atomic metal layers stacked in between covalent ceramics enables electrical conductivity and a good machinability (Ref 2,3). The mechanical deformation of MAX phases is mainly attributed to the role of the metal layer and locally weaker bonds and associated dislocation gliding mechanisms in the basal plane, or kink banding often causing internal delamination ( Ref 1,[4][5][6][7]. The general formula M n?1 AX n describes the composition with M as an early transition metal (Ti, Zr, Cr…), A as an IIIA-group element (Si, Al…) and X as carbon or nitrogen (Ref 8).…”

Section: Introductionmentioning

confidence: 99%

Influence of MAX-Phase Deformability on Coating Formation by Cold Spraying

et al. 2020

View full text Add to dashboard Cite

As solid-state deposition technique avoiding oxidation, cold gas spraying is capable of retaining feedstock material properties in the coatings, but typically fails to build up coatings of brittle materials. Ceramic MAX phases show partial deformability in particular lattice directions and may thus successfully deposit in cold spraying. However, deformation mechanisms under high strain rate, as necessary for cohesion and adhesion, are not fully clear yet. A MAX-phase deposit only builds up, if the specific mechanical properties of the MAX phase allow for, and if suitable spray parameter sets get realized. To investigate the influence of material properties and deposition conditions on coating microstructure and quality, three MAX phases, Ti3SiC2, Ti2AlC and Cr2AlC, were selected. Up to ten passes under different spray parameters yielded Ti2AlC and Cr2AlC coatings with thicknesses of about 200-500 µm. In contrast, Ti3SiC2 only forms a monolayer, exhibiting brittle laminar failure of the impacting particles. In all cases, the crystallographic structure of the MAX-phase powders was retained in the coatings. Thicker coatings show rather low porosities (< 2%), but some laminar cracks. The deposition behavior is correlated with individual mechanical properties of the different MAX-phase compositions and is discussed regarding the particular, highly anisotropic deformation mechanisms.

show abstract

Deformation mechanisms during high temperature tensile creep of Ti3AlC2 MAX phase

Cited by 50 publications

References 33 publications

Microstructural evolution and wear mechanism of Ti3AlC2 – Ti2AlC dual MAX phase composite consolidated by spark plasma sintering (SPS)

Microstructural evolution and wear mechanism of Ti3AlC2 – Ti2AlC dual MAX phase composite consolidated by spark plasma sintering (SPS)

High temperature compressive creep of dense and porous Cr2AlC in air

Influence of MAX-Phase Deformability on Coating Formation by Cold Spraying

Contact Info

Product

Resources

About