On the temperature rise associated with the electroplastic effect in titanium

Sprecher, A.F.; Mannan, S.L.; Conrad, H.

doi:10.1016/0036-9748(83)90491-x

Cited by 58 publications

(41 citation statements)

References 4 publications

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“…According to the wave forms of ECP, the temperature increment can be evaluated based on the following equation 18 : According to the wave forms of ECP, the temperature increment can be evaluated based on the following equation 18 :…”

Section: Discussionmentioning

confidence: 99%

Effect of the electropulsing on mechanical properties and microstructure of an ECAPed AZ31 Mg alloy

Yin

Liu

et al. 2008

J. Mater. Res.

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The mechanical properties and corresponding microstructure development of the AZ31 Mg alloy after treatment with equal channel angular pressing (ECAP) and subsequent electropulsing (ECP) was investigated. Comparing the ECAP+ECP-treated AZ31 alloy with the ECAP-treated alloy, the elongation to failure was improved significantly, while the yield stress and the ultimate tensile strength were not decreased, the grain sizes were slightly increased and more homogeneous, and the texture was barely changed. The main mechanism for the evolution of the structures and properties might be ascribed to the increased nucleation rate on recrystallization and the decreased dislocation density during the ECP treatment. It was reasonable to expect that the ECAP+ECP treatment would provide a promising approach for enhancing the mechanical properties of the Mg alloys.

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Section: Discussionmentioning

confidence: 99%

Effect of the electropulsing on mechanical properties and microstructure of an ECAPed AZ31 Mg alloy

Yin

Liu

et al. 2008

J. Mater. Res.

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“…In this experiment, the temperature rise of the sample is induced by Joule heating of electric current and it is dominated by the energy of ECP. Theoretically, the average temperature rise can be calculated according to the following equation 11) ÁT…”

Section: Resultsmentioning

confidence: 99%

Effect of Grain Boundary Resistivity on Solid State Phase Transformation Induced by Electric Current Pulse in a Cold-Rolled Cu–Zn Alloy

2012

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To clear the effect of grain boundary resistivity on solid state phase transformation, an electrical current pulse (ECP) was applied to a 40% cold-rolled CuZn alloy, and the angle between the exerted current direction (CD) and rolling direction (RD) varied from 0 to 90°. Results showed that with the change of angle, the average grain sizes of ECP treated samples were varied. Through the thermodynamic analysis, it was known that the different diffusion activation energy induced by different grain boundary resistivity was attributed to the evolution of microstructure.

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“…The temperature of samples is calculated according to the wave forms of ECP, and the temperature increment is dominated by the energy input by ECP. The temperature increment can be achieved based on the following equation 17 : That is to say, the temperature on the top surface is about 1138 K, which is close to the melting point temperature and exceeds the temperature at which ␣-phase can completely transform into ␤-phase. It is concluded that on the top surface of sample B ␣-phase perhaps completely transform into ␤-phase during the heating course, and then ␤-phase will transform into ␣-phase during the cooling course of the ECP treatment, and a rapid heating or cooling rate is in favor of the grain refinement; nevertheless, the ␤Ј ↔ ␤ phase transformation cannot result in grain refinement because the orderdisorder transformation at 727 K is ineffective for grain refinement, which induces the coarse-grained structure to remain in the original ␤Ј-phase after ECP treatment.…”

Section: Methodsmentioning

confidence: 99%

Formation of nanocrystalline surface of a Cu–Zn alloy under electropulsing surface treatment

Wang

Guo

2007

J. Mater. Res.

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A nanocrystalline surface layer of a Cu-Zn alloy was developed by electropulsing (ECP) surface treatment. The average grain size was about 20 nm on the top surface layer and was gradually augmented with the increase in depth from the top surface. Nanoindentation measurements showed that the hardness was significantly enhanced on the top surface layer compared with the as-annealed Cu-Zn sample. The mechanism for the evolution of this structure and property was related not only to a solid-state phase transformation, but also to the effect of the enhancement of the nucleation rate and the skin effect during the ECP treatment. Therefore, the ECP surface treatment provides a promising method for obtaining surface self-nanocrystallization materials.

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On the temperature rise associated with the electroplastic effect in titanium

Cited by 58 publications

References 4 publications

Effect of the electropulsing on mechanical properties and microstructure of an ECAPed AZ31 Mg alloy

Effect of the electropulsing on mechanical properties and microstructure of an ECAPed AZ31 Mg alloy

Effect of Grain Boundary Resistivity on Solid State Phase Transformation Induced by Electric Current Pulse in a Cold-Rolled Cu–Zn Alloy

Formation of nanocrystalline surface of a Cu–Zn alloy under electropulsing surface treatment

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On the temperature rise associated with the electroplastic effect in titanium

Cited by 58 publications

References 4 publications

Effect of the electropulsing on mechanical properties and microstructure of an ECAPed AZ31 Mg alloy

Effect of the electropulsing on mechanical properties and microstructure of an ECAPed AZ31 Mg alloy

Effect of Grain Boundary Resistivity on Solid State Phase Transformation Induced by Electric Current Pulse in a Cold-Rolled Cu&ndash;Zn Alloy

Formation of nanocrystalline surface of a Cu–Zn alloy under electropulsing surface treatment

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Effect of Grain Boundary Resistivity on Solid State Phase Transformation Induced by Electric Current Pulse in a Cold-Rolled Cu–Zn Alloy