A diffusion-multiple approach for mapping phase diagrams, hardness, and elastic modulus

Zhao, Ji‐Cheng; Jackson, M. R.; Peluso, L. A.; Brewer, Luke N.

doi:10.1007/bf02700985

Cited by 58 publications

(40 citation statements)

References 3 publications

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“…Diffusion couples can consist of IMCs adjacent to a solid solution matrix [105][106][107] and can serve as a model of the heterogeneous microstructure of an alloy. The size of a fabricated matrix with IMCs is typically a few hundred micrometers depending on the heat treatment time and temperature.…”

Section: Research Outlook On Localized Galvanic Corrosion Arising Betmentioning

confidence: 99%

A Summary of Corrosion Properties of Al-Rich Solid Solution and Secondary Phase Particles in Al Alloys

Dang

2017

Metals

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Abstract:The heterogeneous structure of Al alloys renders them susceptible to localized corrosion due to the different electrochemical properties existing in the Al-rich solid solution matrix and secondary phase particles. The galvanic interactions between these two phases can result in pit formation either through dissolution of the particles or corrosion of the matrix adjacent to the particles. This detrimentally localized corrosion behavior is closely related to the corrosion properties of the particles and the Al-rich matrix. The comprehensive characterization of this behavior under various and varying conditions is critical to understanding the mechanism of pit formation, selecting appropriate inhibitors, and developing protection strategies. The corrosion properties (corrosion potential, pitting potential and corrosion rate) of both secondary phase particles and Al-solid solutions in Al alloys are summarized in this review, aiming to provide a database for corrosion research applicable to the localized corrosion of Al alloys.

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Section: Research Outlook On Localized Galvanic Corrosion Arising Betmentioning

confidence: 99%

A Summary of Corrosion Properties of Al-Rich Solid Solution and Secondary Phase Particles in Al Alloys

Dang

2017

Metals

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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%

“…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). A relatively small number of studies have actually employed nanoindentation [65,66,[69][70][71]. However, as discussed in prior work, the protocols used in the analyses of these datasets do not produce consistent and reliable values.…”

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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“…In this context, the diffusion couple (DC) approach combined with smallscale testing methods such as nanoindentation and/or micropillar compression holds great promise. [6][7][8][9][10][11][12][13][14] By means of the DC method, a library of compositions is generated in the interdiffusion zones, and the compositional analysis along these zones is performed with a high degree of accuracy by employing techniques such as electron probe microanalysis (EPMA). The interdiffusion zones are then probed for hardness, H, by employing nanoindentation (NI), and H as a function of solute concentration, c, is obtained.…”

Section: Introductionmentioning

confidence: 99%

“…The DC-NI approach pioneered by Zhao [6][7][8]13] has been used-for the determination of diffusion coefficients, to generate phase diagrams, and to obtain H-c data in certain binary and ternary alloy systems. It has, however, only been used to a limited extent to study the SSH behavior.…”

Section: Introductionmentioning

confidence: 99%

Evaluation of Solid-Solution Hardening in Several Binary Alloy Systems Using Diffusion Couples Combined with Nanoindentation

Kadambi

Divya

Ramamurty

2017

Metall Mater Trans A

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Analysis of solid-solution hardening (SSH) in alloys requires the synthesis of large composition libraries and the measurement of strength or hardness from these compositions. Conventional methods of synthesis and testing, however, are not efficient and high-throughput approaches have been developed in the past. In the present study, we use a high-throughput combinatorial approach to examine SSH at large concentrations in binary alloys of Fe-Ni, Fe-Co, Pt-Ni, Pt-Co, Ni-Co, Ni-Mo, and Co-Mo. The diffusion couple (DC) method is used to generate concentration (c) gradients and the nanoindentation (NI) technique to measure the hardness (H) along these gradients. The obtained H-c profiles are analyzed within the framework of the Labusch model of SSH, and the c 2=3 dependence of H predicted by the model is found to be generally applicable. The SSH behavior obtained using the combinatorial method is found to be largely consistent with that observed in the literature using conventional and DC-NI methods. This study evaluates SSH in Fe-, Ni-, Co-, and Pt-based binary alloys and confirms the applicability of the DC-NI approach for rapidly screening various solute elements for their SSH ability.

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A diffusion-multiple approach for mapping phase diagrams, hardness, and elastic modulus

Cited by 58 publications

References 3 publications

A Summary of Corrosion Properties of Al-Rich Solid Solution and Secondary Phase Particles in Al Alloys

A Summary of Corrosion Properties of Al-Rich Solid Solution and Secondary Phase Particles in Al Alloys

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

Evaluation of Solid-Solution Hardening in Several Binary Alloy Systems Using Diffusion Couples Combined with Nanoindentation

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