Deformation behavior of Cu-based nanocomposite processed by severe plastic deformation

Исламгалиев, Р. К.; Buchgraber, W.; Kolobov, Yu. R.; Amirkhanov, N. M.; Sergueeva, A. V.; Ivanov, K. V.; Grabovetskaya, G. P.

doi:10.1016/s0921-5093(01)01073-5

Cited by 80 publications

(38 citation statements)

References 4 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Second, by subjecting samples of pure Ti to HPT after processing by ECAP where it was demonstrated that there was an additional reduction in the grain size from~300 nm to~200 nm [7]. In addition, whereas the grain sizes attained in ECAP are generally in the submicrometer range of~100-1,000 nm, numerous reports are now available documenting grain sizes of <100 nm in materials processed by HPT: for example, nanometer grains sizes have been reported in various Al alloys [8][9][10], a Cu nanocomposite [11], various Ni alloys [12,13], Ni 3 Al [14][15][16], Ti-6% Al-4% V [17] and various steels [10,[18][19][20][21][22].…”

Section: Introductionmentioning

confidence: 99%

Evolution of microstructure and microtexture in fcc metals during high-pressure torsion

2006

View full text Add to dashboard Cite

Pure nickel and commercially pure (CP) aluminium were selected as model fcc materials for a detailed investigation of the experimental parameters influencing grain refinement and evolution of microstructure and microtexture during processing by highpressure torsion (HPT). Samples were examined after HPT using microhardness measurements, transmission electron microscopy and orientation imaging microscopy. Processing by HPT produces a grain size of 170 nm in pure Ni and~1 lm in CP aluminium. It is shown that homogeneous and equiaxed microstructures can be attained throughout the samples of nickel when using applied pressures of at least~6 GPa after 5 whole revolution. In CP aluminium, a homogeneous and equiaxed microstructure was achieved after 2 whole revolutions under an applied pressure of 1 GPa. For these conditions, the distributions of grain boundary misorientations are similar in the centre and at the periphery of the samples. It is shown that simple shear texture develops in fcc metals subjected to highpressure torsion. Some grain growth was detected at the periphery of the Al disk after 8 revolutions. The factors influencing the development of homogeneous microstructures in processing by HPT are discussed.

show abstract

Section: Introductionmentioning

confidence: 99%

Evolution of microstructure and microtexture in fcc metals during high-pressure torsion

2006

View full text Add to dashboard Cite

show abstract

“…The recorded torque value includes, in addition to the torque required for deforming the sample, a contribution from formation of the burr [9]. This contribution appears to be difficult to evaluate.…”

Section: Materials and Experimental Proceduresmentioning

confidence: 99%

Characterization of deformation behaviour of aluminium alloy AA 6082 processed by HPT

Zrník¹,

Kraus²,

Scheriau³

et al. 2013

View full text Add to dashboard Cite

In this study, ultrafine grain structure evolution during high pressure torsion (HPT) of commercial aluminium alloy AA6082 at an elevated temperature is presented. Two different initial structural states of the alloy were prepared by thermal treatment. The dependence of the progress of microstructure refinement on shear strain was investigated by TEM observation of thin foils. The impact of various amounts of strain (ε ef ) was analysed with respect to the increased temperature of deformation. Microhardness data measured across the deformed discs show scatter. Observation of microstructure revealed that an ultrafine grain (UFG) structure formed in the deformed disc as early as the end of the first turn, regardless of the initial structure of alloy resulting from the prior thermal treatment. The heterogeneity of UFG deformed structure in the deformed discs is consistent with the scatter in microhardness values. By increasing the strain level through adding turns (N = 2, 4, 6), the UFG structure was homogenized in the deformed discs. The effect of the increase in deformation temperature became more evident at higher straining when dynamic recrystallization modified the UFG structure locally. In the specimens prepared by two-stage thermal treatment (quenching and ageing) prior to torsion deformation, the growth of new grains was inhibited and the UFG microstructure was more stable. Tensile strength values suggest that strengthening was partially relaxed by local recrystallization. Torque vs. time plots reveal that the torque required to deform the sample was increasing until the completion of the first turn and then remained stable or even decreased slightly.K e y w o r d s : 6082 Al alloy, thermal treatment, structure modification, HPT severe plastic deformation, ultrafine grain structure, mechanical properties, torque

show abstract

“…Equal channel angular pressing has been shown to be effective for controlling molecular and macro scale structures in polyethylene (for example see Zhiyong et al), [12] polycarbonate (for example see Xia et al), [8] and several metal and polymer nanocomposite systems (for example see Islamgaliev et al). [13] The work on polymers is promising and is likely to continue to grow. Exploratory work on SPD processing of semiconductor materials has not grown significantly since 1999.…”

Section: Reviewsmentioning

confidence: 99%

Commercialization of Nanostructured Metals Produced by Severe Plastic Deformation Processing

Lowe¹,

Zhu

2003

Adv Eng Mater

View full text Add to dashboard Cite

The promise of nanotechnology is increasingly being realized as governments, universities, public and private research laboratories, and the various industrial sectors devote resources to this emerging area. Estimates for the economic impact of nanotechnology on existing global markets exceed 700 billion by the year 2008. Nanomaterials are projected to be one of the earliest components of nanotechnology to appear in commercial applications. Amongst the emerging new nanomaterials, bulk nanostructured metals produced by severe plastic deformation (SPD) have shown promise in a wide range of application areas. In this paper, we overview developments in severe plastic deformation technology, emphasizing progress since the international workshop “Investigations and Applications of Severe Plastic Deformation” held 2–8 August 1999 in Moscow, Russia. Then, we overview some of principal areas of application for SPD metals and alloys.

show abstract

Deformation behavior of Cu-based nanocomposite processed by severe plastic deformation

Cited by 80 publications

References 4 publications

Evolution of microstructure and microtexture in fcc metals during high-pressure torsion

Evolution of microstructure and microtexture in fcc metals during high-pressure torsion

Characterization of deformation behaviour of aluminium alloy AA 6082 processed by HPT

Commercialization of Nanostructured Metals Produced by Severe Plastic Deformation Processing

Contact Info

Product

Resources

About