Search Results - "Langdon, G."

Seventy-five years of superplasticity: historic developments and new opportunities by Langdon, Terence G.

“…On this seventy-fifth anniversary of the first scientific report of true superplastic flow, it is appropriate both to look back and examine the major…”
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Effect of annealing on mechanical properties of a nanocrystalline CoCrFeNiMn high-entropy alloy processed by high-pressure torsion by Shahmir, Hamed, He, Junyang, Lu, Zhaoping, Kawasaki, Megumi, Langdon, Terence G.

“…A CoCrFeNiMn high-entropy alloy (HEA) was processed by high-pressure torsion (HPT) under 6.0GPa pressure up to 10 turns at room temperature. It is shown that…”
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Overview: Using Severe Plastic Deformation in the Processing of Superplastic Materials by Langdon, Terence G.

“…In tensile testing, polycrystalline materials generally fail at relatively low total elongations but under some limited conditions it is possible to achieve…”
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Review: achieving superplastic properties in ultrafine-grained materials at high temperatures by Kawasaki, Megumi, Langdon, Terence G.

“…The mechanisms of superplasticity occurring in conventional materials, having grains sizes of the order of a few microns, are now understood reasonably well…”
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Texture evolution in high-pressure torsion processing by Azzeddine, Hiba, Bradai, Djamel, Baudin, Thierry, Langdon, Terence G.

“…Among the severe plastic deformation processing (SPD) of materials, high-pressure torsion (HPT) is known to induce considerable amounts of plastic strain and…”
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Using high-pressure torsion for metal processing: Fundamentals and applications by Zhilyaev, Alexander P., Langdon, Terence G.

“…High-pressure torsion (HPT) refers to the processing of metals whereby samples are subjected to a compressive force and concurrent torsional straining…”
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Effect of grain size on strength and strain rate sensitivity in metals by Figueiredo, Roberto B., Langdon, Terence G.

“…The effect of the grain size on the mechanical properties of metallic materials has been a topic of significant interest for researchers and industry. For many…”
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Producing Bulk Ultrafine-Grained Materials by Severe Plastic Deformation: Ten Years Later by Valiev, Ruslan Z., Estrin, Yuri, Horita, Zenji, Langdon, Terence G., Zehetbauer, Michael J., Zhu, Yuntian

“…It is now well established that the processing of bulk solids through the application of severe plastic deformation (SPD) leads to exceptional grain refinement…”
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Microstructure and properties of a CoCrFeNiMn high-entropy alloy processed by equal-channel angular pressing by Shahmir, Hamed, Mousavi, Tayebeh, He, Junyang, Lu, Zhaoping, Kawasaki, Megumi, Langdon, Terence G.

“…A CoCrFeNiMn high-entropy alloy (HEA) was processed by equal-channel angular pressing (ECAP) for up to four passes at 673K and the results show that the…”
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Review: Overcoming the paradox of strength and ductility in ultrafine-grained materials at low temperatures by Kumar, Praveen, Kawasaki, Megumi, Langdon, Terence G

“…Ultrafine-grained (UFG) materials with grain sizes in the submicrometer or nanometer range may be prepared through the application of severe plastic…”
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Evidence for superplasticity in a CoCrFeNiMn high-entropy alloy processed by high-pressure torsion by Shahmir, Hamed, He, Junyang, Lu, Zhaoping, Kawasaki, Megumi, Langdon, Terence G.

“…A CoCrFeNiMn high-entropy alloy was processed by high-pressure torsion to produce a grain size of ~10nm and then tested in tension at elevated temperatures…”
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Effect of a minor titanium addition on the superplastic properties of a CoCrFeNiMn high-entropy alloy processed by high-pressure torsion by Shahmir, Hamed, Nili-Ahmadabadi, Mahmoud, Shafiee, Ahad, Langdon, Terence G.

“…A CoCrFeNiMn high-entropy alloy (HEA) with an addition of 2 at% Ti was processed by high-pressure torsion to produce a grain size of ~30 nm and then tested in…”
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The Strength–Grain Size Relationship in Ultrafine-Grained Metals by Balasubramanian, N., Langdon, Terence G.

“…Metals processed by severe plastic deformation (SPD) techniques, such as equal-channel angular pressing (ECAP) and high-pressure torsion (HPT), generally have…”
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Microstructural evolution in high purity aluminum processed by ECAP by Kawasaki, Megumi, Horita, Zenji, Langdon, Terence G.

“…High purity (99.99%) aluminum was processed by equal-channel angular pressing (ECAP) through 1–12 passes and examined using orientation imaging microscopy. The…”
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Properties of a ZK60 magnesium alloy processed by high-pressure torsion by Torbati-Sarraf, Seyed Alireza, Langdon, Terence G.

“…•ZK60 magnesium alloy was successfully processed by HPT at room temperature.•HPT for 5 turns led to an equiaxed grain with an average grain size of less than…”
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Characteristics of the allotropic phase transformation in titanium processed by high-pressure torsion using different rotation speeds by Shahmir, Hamed, Langdon, Terence G.

“…An investigation was initiated to examine the effect of rotation speed on the allotropic α to ω-phase transformation in titanium. A grade 2 commercial purity…”
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An evaluation of the hexagonal close-packed to face-centered cubic phase transformation in a Ti-6Al-4V alloy during high-pressure torsion by Shahmir, Hamed, Langdon, Terence G.

“…A Ti-6Al-4V alloy was used to examine the effect of martensitic (αʹ) or lamellar (α + β) microstructures on grain refinement and the hcp to fcc phase…”
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Nuclear PTEN's Functions in Suppressing Tumorigenesis: Implications for Rare Cancers by Langdon, Casey G

“…( ) encodes a tumor-suppressive phosphatase with both lipid and protein phosphatase activity. The tumor-suppressive functions of PTEN are lost through a…”
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A comparison of microstructures and mechanical properties in a Cu–Zr alloy processed using different SPD techniques by Wongsa-Ngam, Jittraporn, Kawasaki, Megumi, Langdon, Terence G.

“…Experiments were conducted to evaluate the microstructures and mechanical properties of a Cu–0.1 % Zr alloy processed using two different techniques of severe…”
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The Contribution of Severe Plastic Deformation to Research on Superplasticity by Kawasaki, Megumi, Langdon, Terence G.

“…Superplasticity refers to the ability of some metals, in special testing conditions, to exhibit high elongations of at least 400% before failure. Although this…”
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