Determination of atomic diffusion coefficient via isochronal spark plasma sintering

Li, X.X.; Chao, Yang; Chen, T.; Fu, Zhiqiang; Li, Y.Y.; Ивасишин, О. М.; Lavernia, Enrique J.

doi:10.1016/j.scriptamat.2018.03.033

Cited by 43 publications

(9 citation statements)

References 17 publications

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“…This case can be explained based on the following two factors. According to the theories of CSL, [22] the planar coincident-site densities on the boundary plane are 10.31 nm À2 and 18.05 nm À2 for the {112}/{112} and {110}/{110} GBICs, respectively. The degree of lattice mismatch is inversely correlated with the values of the planar coincident-site densities.…”

Section: Discussionmentioning

confidence: 99%

“…[16][17][18] The underlying PEC mechanism is thought to be an accelerated nucleation of a crystallize phase and a suppression of grain growth under the coupled influence of thermal (temperature field) and athermal (facilitated atomic diffusion) effects. [19][20][21][22] However, inspection of the published literature shows that tailoring the low-R boundaries and the resultant mechanical properties of polycrystalline metals by a PEC has not been attempted previously.…”

Section: Introductionmentioning

confidence: 99%

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Tailoring Grain Boundary and Resultant Plasticity of Pure Iron by Pulsed-Electric-Current Treatment

Chao

Zhao

Wang

et al. 2018

Metall Mater Trans A

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In general, annealing twins (R3 boundaries) are induced in face-centered cubic metals by thermal-mechanical processes. We report on the R3 boundary-induced plasticity enhancement of pure iron treated by a pulsed electric current subject to its allotropic transformation of a fi c fi a. The behavior is attributed to an increased amount of R3 boundaries with the grain-boundary interconnection evolution from {112}/{112} to {110}/{110} resulting from the increasing pulsed-electric-current intensity. The results provide an alternative pathway to fabricate high-performance metallic materials by tailoring special grain boundaries.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Tailoring Grain Boundary and Resultant Plasticity of Pure Iron by Pulsed-Electric-Current Treatment

Chao

Zhao

Wang

et al. 2018

Metall Mater Trans A

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“…[27,28] This approach is especially attractive for high strength structural [28] and-in the case of titanium alloys-for biomedical applications. [29] From a scientific point of view, the highly accurate control of all process parameters enables to study densification mechanisms in the presence of electric fields [30][31][32][33][34] and identify main processing factors required for tuning grain boundaries, [35,36] texture, [37] porosity, [38] and other functional properties. For a more detailed discussion of the big potential of FAST/SPS techniques for material synthesis and microstructure tuning, we refer to excellent textbooks summarizing the current state of the art.…”

Section: Application Of Fast/sps For Synthesis Of High-performing Matmentioning

confidence: 99%

Application of Electric Current‐Assisted Sintering Techniques for the Processing of Advanced Materials

et al. 2020

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Highly efficient energy conversion and storage technologies such as high‐temperature solid oxide fuel and electrolysis cells, all‐solid‐state batteries, gas separation membranes, and thermal barrier coatings for advanced turbine systems depend on advanced materials. In all cases, processing of ceramics and metals starting from powders plays a key role and is often a challenging task. Depending on their composition, such powder materials often require high sintering temperatures and show an inherent risk of abnormal grain growth, evaporation, chemical reaction, or decomposition, especially in the case of long dwelling times. Electric current‐assisted sintering (ECAS) techniques are promising to overcome these restrictions, but a lot of fundamental and practical challenges must be solved properly to take full advantage of these techniques. A broad and long‐term expertise in the field of ECAS techniques and comprehensive facilities including conventional field‐assisted sintering technology/spark plasma sintering (FAST/SPS), hybrid FAST/SPS (with additional heater), sinter forging, and flash sintering (FS) devices are available at the Institute of Energy and Climate Research: Materials Synthesis and Processing (IEK‐1). Herein, main advantages and challenges of these techniques are discussed and the concept to overcome current limitations is introduced on selected examples.

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“…[12][13][14][15][16][17][18][19][20][21] Different types of Ti alloys can be produced when other elements are alloyed with Ti and these Ti alloys exhibit comparable or even better properties compared with commercial pure Ti (CP-Ti), resulting in varied target applications. [22][23][24][25] On the basis of their chemical compositions and phase constituents, Ti alloys can be generally classified into α-type Ti alloys, near α-type Ti alloys, (α þ β)-type Ti alloys, near β-type Ti alloys, β-type Ti alloys, and Ti-based shape-memory alloys. [12,20,[26][27][28][29][30] α-type and near α-type Ti alloys, which mainly contain α-stabilizers (e.g., Al, O, N, C), have admired weldability, castability, and structure stability but limited low-temperature strength and plasticity.…”

Section: Introduction 1titanium and Titanium Alloysmentioning

confidence: 99%

“…Different types of Ti alloys can be produced when other elements are alloyed with Ti and these Ti alloys exhibit comparable or even better properties compared with commercial pure Ti (CP–Ti), resulting in varied target applications . On the basis of their chemical compositions and phase constituents, Ti alloys can be generally classified into α‐type Ti alloys, near α‐type Ti alloys, (α + β)‐type Ti alloys, near β‐type Ti alloys, β‐type Ti alloys, and Ti‐based shape‐memory alloys .…”

Section: Introductionmentioning

confidence: 99%

Surface Modification of Titanium and Titanium Alloys: Technologies, Developments, and Future Interests

2020

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Thanks to a considerable number of fascinating properties, titanium (Ti) and Ti alloys play important roles in a variety of industrial sectors. However, Ti and Ti alloys could not satisfy all industrial requirements; the degradation of Ti and Ti alloys always commences on their surfaces in service, which declines the performances of Ti workpieces. Therefore, with aim to further improve their mechanical, corrosion and biological properties, surface modification is often required for Ti and Ti alloys. This article reviews the technologies and recent developments of surface-modification methods with respect to Ti and Ti alloys, including mechanical, physical, chemical, and biochemical technologies. Conventional methods have limited improvement in the properties and/or restriction on the geometry of workpieces. Therefore, many advanced surfacemodification technologies have emerged in recent decades. New methods make Ti and Ti alloys have better performance and extended applications. With requirement of high surface properties in future. Understanding the mechanism in various surface-modification methods, combining the advantages of current technologies and developing new coating materials with high performance are required urgently. As such, incorporation of different surface-modification technologies with high-performance modified layers may be the mainstream of surface modifications for Ti and Ti alloys. . His current research interests focus on the metal additive manufacturing (e.g., selective laser melting, electron beam melting), titanium alloys and composites, and processing-microstructureproperties in high-performance materials.

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Determination of atomic diffusion coefficient via isochronal spark plasma sintering

Cited by 43 publications

References 17 publications

Tailoring Grain Boundary and Resultant Plasticity of Pure Iron by Pulsed-Electric-Current Treatment

Tailoring Grain Boundary and Resultant Plasticity of Pure Iron by Pulsed-Electric-Current Treatment

Application of Electric Current‐Assisted Sintering Techniques for the Processing of Advanced Materials

Surface Modification of Titanium and Titanium Alloys: Technologies, Developments, and Future Interests

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