Effects of electric pulse modification on liquid structure of Al–5%Cu alloy

Wang, Jianzhong; Qi, Jingang; Zhao, Zuofu; Guo, Hongsheng; Zhao, Tao

doi:10.1016/s1003-6326(13)62799-5

Cited by 22 publications

(20 citation statements)

References 10 publications

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“…Also, as the peak current increased, the undercooling continuously increased. When the peak current value was 1400 A, the Cu-Pb alloy melt undercooling degree was 180 K, which was increased by an order of magnitude compared to the previous studies [12,14].…”

Section: Resultsmentioning

confidence: 58%

“…The result indicated that ECP treatment might affect the microstructure formations of the alloy and the spatial motions of the precipitated phase droplets of Pb. According to liquid metal cluster theory [12,17], the microstructure formation and the affecting mechanisms of ECP were clarified as follows.…”

Section: Resultsmentioning

confidence: 99%

“…DSC curves of Cu-37.4wt.%Pb alloy with various pulse current peaks: aheating curve e; bcooling curve Moreover, the number of large-scale "crystal embryos" that would meet the critical nucleus radius scale would increase, along with the amount of nucleation cores. This would further optimize the solidification structure of the metal [12,17]. In the Cu-37.4 wt.%Pb alloy melt, the Cu atoms, the Pb atoms, the Cu-Cu clusters, the Pb-Pb clusters and the Cu-Pb salvation clusters existed.…”

Section: Resultsmentioning

confidence: 99%

“…The ECP can improve the heterogeneous nucleation rate of a liquid or semi-liquid metal, promoting the solute redistribution and refining the solidification microstructure [8 -10]. The effects of ECP treatment on the solidification structure of pure metals [6,11] and eutectic alloys [5,12] were studied in most recent researches. Adversely, the effect of ECP treatment on monotectic alloys has rarely been reported.…”

Section: Introduction mentioning

confidence: 99%

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Effect of High Density Electric Current Pulse on Solidification of Cu-37.4 wt.%Pb Monotectic Alloy Melt

Geng

Sun

et al. 2019

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The effect of high-density electric current pulse (ECP) on the solidification of Cu-37.4 wt.%Pb monotectic alloy melt was investigated. The microstructure formation mechanisms of ECP were clarified according to liquid metal cluster theory. The results demonstrated that with ECP treatment, the microstructure of Cu-Pb monotectic alloy became finer, the distribution of Pb phase in the matrix was more even and the solute trapping was significantly apparent. Based on the metal liquid cluster theory under ECP, the solid solubility increase result might be due to the salvation clusters increase under the action of pulse current, leading to the binding force increase among solute atoms and solvent atoms. Simultaneously, the aforementioned results were verified through the Differential Scanning Calorimetry (DSC) curve analysis. The results of hardness test, anti-friction test and wear- resistance test show that the ECP can enhance the hardness, improve the properties of anti-friction and wear-resistance of the alloy.

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Section: Resultsmentioning

confidence: 58%

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Introduction mentioning

confidence: 99%

See 2 more Smart Citations

Effect of High Density Electric Current Pulse on Solidification of Cu-37.4 wt.%Pb Monotectic Alloy Melt

Geng

Sun

et al. 2019

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“…Wang et al [3] concluded that electric pulse modification of liquid metal led to a more homogeneous phase distribution and was beneficial to grain refinement. And Liu et al [4] stated that electric field applied during solution treatment induced larger subgrain and increased volume fraction of precipitates, which resulted in higher ductility.…”

Section: Introductionmentioning

confidence: 99%

Electric field-induced aging phase transformation in Al-Zn-Mg-Cu alloys: a first-principles study

Cheng

Chen

et al. 2016

Proceedings of the 2016 3rd International Conference on Mechatronics and Information Technology

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Abstract. The effect of electric fields on the aging phase transformation of Al-Zn-Mg-Cu alloys is investigated with the first-principles method combined with vacancy mechanism. The effects of external electric intensity on aging phase transformation are analyzed. Results show that during aging in an applied electric field lower than 26MV/cm, phase transformation from the GP zones to η' will be accelerated while the phase transformation from η' to η phase will be delayed.

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Study on the effect of vibration on solidification structures in the vibration cast‐rolling process

Wang

Cheng

Zheng

et al. 2021

Materialwissenschaft Werkst

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In the vibration cast‐rolling process, the metal material is in the state of sub‐rapid solidification. Based on the principle of solidification and random theory, the relation between the vibrating process with sub‐rapid solidification and the number of new crystal nuclei was deduced. The theoretical analysis, numerical simulations and experiments of sub‐rapid solidification under vibration were performed. The results show that the modified Cellular Automaton‐Finite Element model can predict the solidified microstructure and size of crystal grains. The results also show that vibration with chilling can effectively promote the production of free crystal nuclei. With a higher frequency of vibration, the area of the equiaxed zone can increase, and the grains can be smaller.

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Effects of electric pulse modification on liquid structure of Al–5%Cu alloy

Cited by 22 publications

References 10 publications

Effect of High Density Electric Current Pulse on Solidification of Cu-37.4 wt.%Pb Monotectic Alloy Melt

Effect of High Density Electric Current Pulse on Solidification of Cu-37.4 wt.%Pb Monotectic Alloy Melt

Electric field-induced aging phase transformation in Al-Zn-Mg-Cu alloys: a first-principles study

Study on the effect of vibration on solidification structures in the vibration cast‐rolling process

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