Experimental investigation of pulse current on mechanical behaviour of AZ31 alloy

Lin, Shudai; Chu, Xiaodong; Bao, Wenke; Gao, Jun; Ruan, Liqun

doi:10.1179/1743284714y.0000000680

Cited by 13 publications

(14 citation statements)

References 33 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Recent studies suggested that EPT-induced the dissolution of secondary phases, and precipitates also contributed to the grain refinement [ 89 ]. Different sizes and densities of precipitates led to different current distributions.…”

Section: Effects Of Ept On Microstructure and Texturementioning

confidence: 99%

See 1 more Smart Citation

Application of High-Density Electropulsing to Improve the Performance of Metallic Materials: Mechanisms, Microstructure and Properties

et al. 2018

View full text Add to dashboard Cite

The technology of high-density electropulsing has been applied to increase the performance of metallic materials since the 1990s and has shown significant advantages over traditional heat treatment in many aspects. However, the microstructure changes in electropulsing treatment (EPT) metals and alloys have not been fully explored, and the effects vary significantly on different material. When high-density electrical pulses are applied to metals and alloys, the input of electric energy and thermal energy generally leads to structural rearrangements, such as dynamic recrystallization, dislocation movements and grain refinement. The enhanced mechanical properties of the metals and alloys after high-density electropulsing treatment are reflected by the significant improvement of elongation. As a result, this technology holds great promise in improving the deformation limit and repairing cracks and defects in the plastic processing of metals. This review summarizes the effect of high-density electropulsing treatment on microstructural properties and, thus, the enhancement in mechanical strength, hardness and corrosion performance of metallic materials. It is noteworthy that the change of some properties can be related to the structure state before EPT (quenched, annealed, deformed or others). The mechanisms for the microstructural evolution, grain refinement and formation of oriented microstructures of different metals and alloys are presented. Future research trends of high-density electrical pulse technology for specific metals and alloys are highlighted.

show abstract

Section: Effects Of Ept On Microstructure and Texturementioning

confidence: 99%

“… Stress-strain curves for magnesium alloys: ( a ) pulse width [ 67 ]; ( b ) temperature [ 89 ]; ( c ) pulse frequency [ 13 ]; and ( d ) voltage [ 114 ]. …”

Section: Figurementioning

confidence: 99%

Application of High-Density Electropulsing to Improve the Performance of Metallic Materials: Mechanisms, Microstructure and Properties

et al. 2018

View full text Add to dashboard Cite

show abstract

“…It is found that both of the two effects increase sharply with the increasing temperature, and the simulation mode is appropriate to investigate the interplay of the two effects. In order to investigate the effect of pulse current on mechanical behaviour for AZ31 magnesium alloy, a comparison experiment between conventional warm tension and current-warm cooperation tension was carried out by Lin et al 19 It is proposed that, the DRX can take place at a relatively low temperature under electropulse compared with the conventional warm method. Recently, Liu et al 20 conducted the EP tensile tests under various elevated temperatures for AZ31B magnesium alloy.…”

Section: Introductionmentioning

confidence: 99%

Electro-plastic effect on tensile deformation behaviour and microstructural mechanism of AZ31B alloy

Bao

Chu

Lin

et al. 2017

Materials Science and Technology

Self Cite

View full text Add to dashboard Cite

The influences of electropulse on mechanical properties of AZ31B alloy were investigated by the electro-plastic (EP) tensile tests. The results show that the flow stress decreases with the increase of the root mean square (RMS) current density, while the elongation to fracture almost remains unchanged after it reaches a certain value. The higher peak current density can lead to a more potent EP effect when the RMS current density remains approximate. The results of microstructure analysis indicate that, the electropulse can reduce the dynamic recrystallisation temperature and promote the grain boundary sliding. The inverse eutectic reaction ( α + β = L) will take place at the necking zone under high electropulse, which can optimise the deformation mechanism before the liquid phase is too much.

show abstract

“…As a nontraditional processing method, electropulsing treatment (EPT), has been widely investigated in the past few decades since it can improve the comprehensive properties of metallic materials by applying high-density current pulse in a short time. Considerable researches pay close attention to the interesting phenomena caused by EPT in metals and alloys, such as electroplasticity, [1][2][3] crack-healing, [4][5][6][7][8] recrystallization, [9][10][11][12] and phase transformation. [13][14][15][16] What's more, it has been demonstrated that EPT could be also beneficial to the traditional manufacturing processes and novel electric-assisted forming (EAF) methods were developed, [17][18][19] such as electrically assisted rolling, [20,21] electrically assisted drawing, [22,23] and electrically assisted bending.…”

Section: Introductionmentioning

confidence: 99%

Regulating the Tensile Properties of a Nano‐Lamellar Austenitic Stainless Steel via Cryogenic Electropulsing

et al. 2022

View full text Add to dashboard Cite

Electropulsing treatment (EPT) in the liquid nitrogen (LN) circumstances, referred to as LN‐EPT, is utilized to regulate the microstructure and tensile properties of a cold‐rolled 316L austenitic stainless steel. The electropulsing effects between the samples treated in the ambient environment at room temperature (RT) and in the LN temperature are compared. The results confirm that the LN‐EPT‐processed samples can also realize a fully recrystallized microstructure, and even the Joule heat is significantly suppressed compared with the RT‐EPT samples. The tensile properties of the LN‐EPT samples show both higher yield strength and higher ultimate strength while keeping considerable elongations compared with the RT‐EPT samples because of the finer recrystallized structure in the LN‐EPT samples. This attempt of LN‐EPT may shed some new light on developing the cryogenic electropulsing‐assisted forming methods for metals in the future.

show abstract

Experimental investigation of pulse current on mechanical behaviour of AZ31 alloy

Cited by 13 publications

References 33 publications

Application of High-Density Electropulsing to Improve the Performance of Metallic Materials: Mechanisms, Microstructure and Properties

Application of High-Density Electropulsing to Improve the Performance of Metallic Materials: Mechanisms, Microstructure and Properties

Electro-plastic effect on tensile deformation behaviour and microstructural mechanism of AZ31B alloy

Regulating the Tensile Properties of a Nano‐Lamellar Austenitic Stainless Steel via Cryogenic Electropulsing

Contact Info

Product

Resources

About