Structure and microhardness of chromium-zirconium bronze subjected to severe plastic deformation by dynamic channel-angular pressing and rolling

Zel’dovich, G. V.; Frolova, N. Yu.; Khomskaya, I. V.; Kheifets, A. E.; Шорохов, Е. В.; Nasonov, P. A.

doi:10.1134/s0031918x14050159

Cited by 16 publications

(6 citation statements)

References 4 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Grain refinement via intense plastic deformation provides structural strengthening consistent with the Hall-Petch relationship [16]. Recently, many techniques of intense plastic working such as multidirectional forging [17], equal channel angular pressing [18][19][20], high pressure torsion [21][22][23] and accumulative roll-bonding [24] were applied to produce the UFG structure in metallic materials including Cu-Cr-Zr alloys. The structural evolution leading to the formation of ultrafine grains in the Cu-0.3% Cr-0.5%Zr alloy during multidirectional forging up to a total strain of 4 at 20 and 400°C was recently studied for both ST and AT samples [10].…”

Section: Introductionmentioning

confidence: 99%

Grain refinement kinetics and strengthening mechanisms in Cu–0.3Cr–0.5Zr alloy subjected to intense plastic deformation

Zhilyaev

Shakhova

Morozova

et al. 2016

Materials Science and Engineering: A

View full text Add to dashboard Cite

The ultrafine-grained microstructures, mechanical properties and electrical conductivity of a Cu-0.3%Cr-0.5%Zr alloy subjected to equal channel angular pressing (ECAP) at a temperature of 400°C to a total strain of 1, 2, and 4 were investigated. The ultrafine-grained microstructure resulting from progressive increase in the misorientations of strain-induced low-angle boundaries during the multiple ECAP process is considered as a type of continuous dynamic recrystallization. The multiple ECAP process resulted in substantial strengthening of the alloy. The yield stress of CuCrZr alloy in the initial solution treated condition (ST) increased from 65 MPa to 476 MPa after four ECAP passes at 400°C. For the aged condition (AT), the yield stress increased from 170 MPa to 511 MPa after four passes. The strengthening was attributed to the grain refinement and high dislocation densities evolved via large strain deformation. Bacon-Kocks-Scattergood modification of the Orowan model is sufficient for acceptable description of the precipitation hardening of AT specimens during ECAP processing; this finding is in excellent agreement with the experimental data. The discrepancy between the experiment and model for ST specimens disappears after taking into consideration additional precipitating of the supersaturated solid solution during preheating and ECAP processing.

show abstract

Section: Introductionmentioning

confidence: 99%

Grain refinement kinetics and strengthening mechanisms in Cu–0.3Cr–0.5Zr alloy subjected to intense plastic deformation

Zhilyaev

Shakhova

Morozova

et al. 2016

Materials Science and Engineering: A

View full text Add to dashboard Cite

show abstract

“…The properties of Cu-Cr-Zr alloys can be improved by means of an appropriate thermo-mechanical processing (TMP). The most promising processing methods, which allow us the fabrication of advanced Cu alloys with improved mechanical properties, involve severe plastic deformations [9][10][11][12][13][14][15][16][17]. It should be noted that the significant strengthening through intense plastic straining is not accompanied by a remarkable degradation of electrical conductivity [11][12][13]16,17].…”

Section: Introductionmentioning

confidence: 99%

Deformation microstructures, strengthening mechanisms, and electrical conductivity in a Cu–Cr–Zr alloy

Mishnev

Shakhova

Belyakov

et al. 2015

Materials Science and Engineering: A

162

View full text Add to dashboard Cite

“…The preliminary severe deformation external action is used increasingly more often to optimize the mechanical properties of metals and alloys [20][21][22]. This is caused by the possibility of considerable grain refining during the subsequent thermal treatments.…”

Section: Resultsmentioning

confidence: 99%

Evolution of the microstructure and mechanical properties of the Cu-47Pd (at %) alloy during atomic ordering after severe plastic deformation

Antonova

Новикова

Антонов

et al. 2015

Phys. Metals Metallogr.

View full text Add to dashboard Cite

The possibility of severe plastic deformation of the Cu-47Pd (at %) alloy by room temperature rolling to high degrees without intermediate anneals has been shown. The microstructure and physicome chanical properties of ribbons 100 and 4.5 μm thick in the initial strongly deformed state (the true degree of deformation ε ≈ 4.4 and ε ≈ 7.5, respectively), as well as after thermal treatments of various durations have been studied. High alloy plasticity during rolling is explained by recovery processes, which occur in the mate rial during SPD. The formation of single phase B2 type ordered state, which diverges with the phase dia gram, is found. , wt % Temperature, °С Temperature, К В2(bcc) High hydrogen permeability А1(fcc) Low hydrogen permeability А1 + В2 Cu-47 at % Pd (60 wt %) Fig. 1. Portion of the phase diagram of Cu-Pd alloys with B2 type ordering [1].

show abstract

Structure and microhardness of chromium-zirconium bronze subjected to severe plastic deformation by dynamic channel-angular pressing and rolling

Cited by 16 publications

References 4 publications

Grain refinement kinetics and strengthening mechanisms in Cu–0.3Cr–0.5Zr alloy subjected to intense plastic deformation

Grain refinement kinetics and strengthening mechanisms in Cu–0.3Cr–0.5Zr alloy subjected to intense plastic deformation

Deformation microstructures, strengthening mechanisms, and electrical conductivity in a Cu–Cr–Zr alloy

Evolution of the microstructure and mechanical properties of the Cu-47Pd (at %) alloy during atomic ordering after severe plastic deformation

Contact Info

Product

Resources

About