Combining indentation and diffusion couple techniques for combinatorial discovery of high temperature shape memory alloys

Shastry, V.V.; Divya, V.D.; Azeem, Mohammed Abdul; Paul, Arindam; Dye, David; Ramamurty, Upadrasta

doi:10.1016/j.actamat.2013.06.017

Cited by 33 publications

(10 citation statements)

References 47 publications

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“…In structural materials development, there have been numerous efforts aimed at high throughput explorations [62][63][64][65][66][67][68][69][70][71]. A number of these prior efforts have either employed standard tensile testing [62] (demands sufficiently large amounts of material samples produced with excellent control of processing history in the entire sample volume) or grossly simplified hardness measures [72] (these should largely be treated as qualitative measures as they generally correspond to a finite amount of plastic strain that is not maintained constant for the different samples and materials tested).…”

Section: Application: High Throughput Exploration Of Process-propertymentioning

confidence: 99%

High throughput exploration of process-property linkages in Al-6061 using instrumented spherical microindentation and microstructurally graded samples

Weaver

Khosravani

Castillo

et al. 2016

Integr Mater Manuf Innov

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Recent spherical nanoindentation protocols have proven robust at capturing the local elastic-plastic response of polycrystalline metal samples at length scales much smaller than the grain size. In this work, we extend these protocols to length scales that include multiple grains to recover microindentation stress-strain curves. These new protocols are first established in this paper and then demonstrated for Al-6061 by comparing the measured indentation stress-strain curves with the corresponding measurements from uniaxial tension tests. More specifically, the scaling factors between the uniaxial yield strength and the indentation yield strength was determined to be about 1.9, which is significantly lower than the value of 2.8 used commonly in literature. The reasons for this difference are discussed. Second, the benefits of these new protocols in facilitating high throughput exploration of process-property relationships are demonstrated through a simple case study.

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Section: Application: High Throughput Exploration Of Process-propertymentioning

confidence: 99%

High throughput exploration of process-property linkages in Al-6061 using instrumented spherical microindentation and microstructurally graded samples

Weaver

Khosravani

Castillo

et al. 2016

Integr Mater Manuf Innov

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“…Crystallographic variants for a given set of phase candidates in a martensitic transformation can be predicted using the phenomenological theory of martensitic transformations (PTMT) [20]. This approach, in tandem with a combinatorial search [21,22] can be used to identify stable SMAs with minimum thermal hysteresis [21].…”

Section: Introductionmentioning

confidence: 99%

Lattice instability during the martensitic transformation in the high temperature shape memory alloy Zr(Cu0.5Co0.25Ni0.25)

Azeem¹,

Dye²

2015

Journal of Alloys and Compounds

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“…These capability have potential to design the laminated SMA composite plates 22,23) and combinatorial studies for high-throughput characterization of shape memory and mechanical properties of SMAs. 18,24) Recently, our group have reported the diffusion behavior in the AuTi/Co system by using the laminate of AuTi/Co/AuTi fabricated by the DC method. 20) The (Au,Co) 2 Ti and (Au,Ti)Co 2 intermetallic compounds were formed near the interface after heat-treated 1073 K to 1273 K. The apparent activation energy for the growth of the diffusion layer was calculated to be 168 kJ/mol and the diffusion path between AuTi and Co was also discussed.…”

Section: Introductionmentioning

confidence: 99%

Phase Reaction and Diffusion Behavior between AuTi and CoTi Intermetallic Compounds

et al. 2019

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The phase reaction and diffusion behavior of stoichiometric AuTi and CoTi intermetallic compounds were clarified using diffusion couple technique. It was found by scanning electron microscopy equipped with energy dispersive X-ray spectroscope that two intermetallic compounds of (Au,Co)Ti 3 and (Au,Co) 2 Ti were produced near interface between the AuTi and CoTi when heat-treated at 1173 K and 1273 K, and that only (Au,Co)Ti 3 was formed when heat-treated at 1373 K. The presence of these intermetallic compounds was explained by the concentration dependent diffusivity in the diffusion couple. With increasing the heat-treatment temperature from 1173 K to 1373 K, the thickness of the diffusion layer increased from 78 µm to 200 µm. The apparent activation energy for the layer growth was estimated as 127 kJ/mol. Furthermore, the diffusion path in the isothermal section at 1173 K1373 K in the AuTiCo system was also discussed.

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Combining indentation and diffusion couple techniques for combinatorial discovery of high temperature shape memory alloys

Cited by 33 publications

References 47 publications

High throughput exploration of process-property linkages in Al-6061 using instrumented spherical microindentation and microstructurally graded samples

High throughput exploration of process-property linkages in Al-6061 using instrumented spherical microindentation and microstructurally graded samples

Lattice instability during the martensitic transformation in the high temperature shape memory alloy Zr(Cu0.5Co0.25Ni0.25)

Phase Reaction and Diffusion Behavior between AuTi and CoTi Intermetallic Compounds

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