Performance and applications of nanostructured materials produced by severe plastic deformation

Zhu, Yuntian; Lowe, Terry C.; Langdon, Terence G.

doi:10.1016/j.scriptamat.2004.05.006

Cited by 301 publications

(149 citation statements)

References 41 publications

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“…54,[59][60][61][62] This evolution is revealed in several ways. First, both pure metals and commercial alloys are currently under extensive research and the latter have a great potential for special applications.…”

Section: Ongoing Research and Trendsmentioning

confidence: 99%

“…It is anticipated that similar approaches may be used also to fabricate UFG materials for a range of other applications as, for example, in weight-sensitive products such as high-performance mountain bicycles and automotive components. 59 Scaling to larger billet sizes is equally feasible in SPD processing. A recent investigation evaluated the effect of upscaling on the mechanical properties, microstructure, and hot-workability of an Al-6061 alloy from a laboratory scale with a diameter of 12.5 mm to an industrial scale with a diameter of 100 mm.…”

Section: Ongoing Research and Trendsmentioning

confidence: 99%

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Producing bulk ultrafine-grained materials by severe plastic deformation

Valiev

Estrin

Horita

et al. 2006

JOM

1,444

644

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Section: Ongoing Research and Trendsmentioning

confidence: 99%

Section: Ongoing Research and Trendsmentioning

confidence: 99%

Producing bulk ultrafine-grained materials by severe plastic deformation

Valiev

Estrin

Horita

et al. 2006

JOM

1,444

644

View full text Add to dashboard Cite

show abstract

“…[1][2][3][4][5][6] These enhanced properties are intrinsically related to large grain boundary area per unit volume in nanocrystalline materials. Nevertheless, a large grain boundary area per unit volume makes nanocrystalline materials thermally unstable and susceptible to grain coarsening to reduce the total grain boundary energy.…”

Section: Introductionmentioning

confidence: 99%

Microstructures and Stabilization Mechanisms of Nanocrystalline Iron-Chromium Alloys with Hafnium Addition

Saber

et al. 2015

Metall Mater Trans A

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The low thermal stability of nanocrystalline metals severely limits their applications at high temperatures. In this study, we investigate the nanocrystalline stabilization mechanisms for Fe14Cr alloys with 1, 2, and 4 at. pct Hf addition at 1173 K (900°C). Microstructural characterizations using aberration-corrected scanning transmission electron microscopy and energydispersive X-ray spectroscopy reveal high density of HfO 2 nanoparticles with sizes of~4 nm dispersed throughout the ferritic matrix. This indicates that kinetic stabilization by HfO 2 nanoparticle pinning is primarily responsible for the observed high thermal stability. In addition, some Hf and Cr segregation on grain boundaries is observed in the Fe-14Cr-4Hf, suggesting the existence of thermodynamic stabilization at high Hf content. Second-phase precipitations such as hafnium carbide, M 23 C 6 , and Fe-Cr-Hf intermetallic phase are also found in the Fe-14Cr-4Hf, but their large sizes and inter-spacing suggest that their contribution to stabilization is minimal.

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“…Due to this plastic strain introduced in the presence of a high hydrostatic pressure, materials with a submicrometric structure may be obtained in the case of metallic alloys [2]. Among the improvements in the mechanical properties, the following stand out: an increase in the yield and in the tensile strength, improvement in fatigue resistance and in forgeability and, under specific conditions, superplastic behavior [3,4]. Other material properties affected by the use of SPD processes are corrosion [5].…”

Section: Introductionmentioning

confidence: 99%

Mechanical Properties Analysis of an Al-Mg Alloy Connecting Rod with Submicrometric Structure

León¹,

Salcedo²,

Murillo³

et al. 2015

Metals

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Over these last few years, there has been a growing interest in developing mechanical components from submicrometric materials due to the significant improvement that these materials present compared to their original state. This present research work deals with the study of the mechanical properties of a connecting rod isothermally forged from different starting materials. These materials are as follows: annealed aluminum alloy (AA) 5754, the same alloy previously deformed through equal channel angular pressing (ECAP) and a third case where the previously ECAP-processed material is subjected to a recovery heat treatment. A comparison is made between finite volume (FV) simulations and experimental tests with respect to hardness, plastic strain and forging force. Furthermore, the improvement in the mechanical properties of the connecting rod forged from predeformed material is evaluated in comparison to the connecting rod forged with annealed material. The microstructure of both cases is also compared at the end of the manufacturing process.

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Performance and applications of nanostructured materials produced by severe plastic deformation

Cited by 301 publications

References 41 publications

Producing bulk ultrafine-grained materials by severe plastic deformation

Producing bulk ultrafine-grained materials by severe plastic deformation

Microstructures and Stabilization Mechanisms of Nanocrystalline Iron-Chromium Alloys with Hafnium Addition

Mechanical Properties Analysis of an Al-Mg Alloy Connecting Rod with Submicrometric Structure

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