Comparison of laboratory-scale and industrial-scale equal channel angular pressing of commercial purity titanium

Medvedev, Alexander E.; Ng, Hoi Pang; Lapovok, Rimma; Estrin, Yuri; Lowe, Terry C.; Anumalasetty, V N

doi:10.1016/j.matlet.2015.01.051

Cited by 43 publications

(17 citation statements)

References 13 publications

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“…[56][57][58][59][60] Not surprisingly, the mechanical performance of CP Ti of biomedical grades was improved significantly upon processing by ECAP. A recent study of the properties of Ti processed by a combination of ECAP-Conform and drawing 61 returned record values of the ultimate tensile strength (1330 MPa) and fatigue strength (620 MPa).…”

Section: Nanostructured Biomaterialsmentioning

confidence: 96%

“…64 The effect of grain refinement of the bulk of the material on the surface characteristics, which in turn control fatigue properties and cellular response, may be weakened by such surface treatments. A recent study 60 shed some light on the effect of sand-blasting combined with acid-etching (the SLA process 65 ) on the fatigue performance of CP Ti. The study demonstrated that the SLA surface treatment of Ti with different bulk microstructures gave rise to different levels of surface roughness.…”

Section: Nanostructured Biomaterialsmentioning

confidence: 99%

See 1 more Smart Citation

Producing Bulk Ultrafine-Grained Materials by Severe Plastic Deformation: Ten Years Later

Valiev

Estrin

Horita

et al. 2016

JOM

395

186

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It is now well established that the processing of bulk solids through the application of severe plastic deformation (SPD) leads to exceptional grain refinement to the submicrometer or nanometer level. Extensive research over the last decade has demonstrated that SPD processing also produces unusual phase transformations and leads to the introduction of a range of nanostructural features, including nonequilibrium grain boundaries, deformation twins, dislocation substructures, vacancy agglomerates, and solute segregation and clustering. These many structural changes provide new opportunities for fine tuning the characteristics of SPD metals to attain major improvements in their physical, mechanical, chemical, and functional properties. This review provides a summary of some of these recent developments. Special emphasis is placed on the use of SPD processing in achieving increased electrical conductivity, superconductivity, and thermoelectricity, an improved hydrogen storage capability, materials for use in biomedical applications, and the fabrication of high-strength metal-matrix nanocomposites.

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Section: Nanostructured Biomaterialsmentioning

confidence: 96%

Section: Nanostructured Biomaterialsmentioning

confidence: 99%

Producing Bulk Ultrafine-Grained Materials by Severe Plastic Deformation: Ten Years Later

Valiev

Estrin

Horita

et al. 2016

JOM

395

186

View full text Add to dashboard Cite

show abstract

“…Another example is SPD-processed commercial purity titanium that showed record values of fatigue strength (which were close to or in excess of those for the conventional alloy Ti-6Al-4V). [65][66][67] These results make it promising to replace this potentially toxic alloy with pure Ti in biomedical applications (see Section 4.8). 3.3.…”

Section: Superior Strength and Ductilitymentioning

confidence: 98%

Fundamentals of Superior Properties in Bulk NanoSPD Materials

Valiev

Estrin

Horita

et al. 2015

Materials Research Letters

Self Cite

296

136

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Bulk nanoSPD materials are materials with nanostructural features, such as nanograins, nanoclusters, or nanotwins, produced by severe plastic deformation (SPD) techniques. Such nanostructured materials are fully dense and contamination free and in many cases they have superior mechanical and functional properties. Here, we provide a critical overview of such materials, with a focus on the fundamentals for the observed extraordinary properties. We discuss the unique nanostructures that lead to the superior properties, the underlying deformation mechanisms, the critical issues that remain to be investigated, future research directions, and the application potential of such materials.

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“…Among the main factors that currently limit the commercialization of SPD processing are the low productivity of the processes and upscaling issues . There is no doubt that substantial progress has been made in this regard over the last decade, which nowadays allows to generate UFG pure metals and some alloys in industrial scale, such as 600 × 600 × 100 mm 3 billets for vehicle armor plates . However, some of the most impressive examples for the potential of SPD processing, such as ultra‐high strength aluminum alloys or highly supersaturated solid solution and segregation design, are limited to HPT processing .…”

Section: Microfabricationmentioning

confidence: 99%

Formability of Ultrafine Grained Metals Produced by Severe Plastic Deformation–An Overview

Bruder

2018

Adv Eng Mater

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Severe plastic deformation (SPD) techniques have attracted considerable attention due to their capability to refine the grain size of metals and alloys down to the ultrafine grained (UFG) regime. A characteristic feature of SPD processes is that they generate semi-finished parts such as rods or sheets, which require further shaping in order to become marketable products. One approach for the shaping of SPD processed materials is the use of metal forming processes, which can be a challenge with regard to the low work hardening rate and tendency to strain localizations of most UFG metals. This article summarizes the current state of knowledge on the formability and forming behavior of UFG metals under different loading scenarios, discussing both limitations and application potential. Furthermore, the interaction between microstructural aspects and the formability, such as the occurrence of strain localizations during and the role of heat treatments are also addressed. Given that the formability of UFG metals has received far less attention than other aspects so far, this work also aims at identifying apparent contradictions as well as scientific and technological questions that need to be addressed in future to expand the current knowledge of the field.

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Comparison of laboratory-scale and industrial-scale equal channel angular pressing of commercial purity titanium

Cited by 43 publications

References 13 publications

Producing Bulk Ultrafine-Grained Materials by Severe Plastic Deformation: Ten Years Later

Producing Bulk Ultrafine-Grained Materials by Severe Plastic Deformation: Ten Years Later

Fundamentals of Superior Properties in Bulk NanoSPD Materials

Formability of Ultrafine Grained Metals Produced by Severe Plastic Deformation–An Overview

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