The effect of strain rate on macroscopic behavior in the compression forming of semi-solid aluminum alloy

Kang, Chung Gil; Choi, Jae-Sue; Kim, K.H.

doi:10.1016/s0924-0136(98)00383-5

Cited by 82 publications

(49 citation statements)

References 2 publications

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“…At this stage the liquid acts as a lubricant, facilitating the movement of primary phase globules and enabling deformation without increasing the applied stress. The final peaks in all the curves, which begin after a strain of 0.5%, are explained by the model proposed by Kang 16 . According to this model, at a certain these dies.…”

Section: Characterization Of the Rheological Behaviormentioning

confidence: 59%

EValuation of the thixoformability of AA7004 and AA7075 alloys

Zoqui

Torres

2010

Mat. Res.

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This study involved a complete evaluation of the thixoformability of AA7004 and AA7075 alloys, from their microstructural characterization to their viscous behavior. The alloys were subjected to globularization heat treatments for 0, 30, 90 and 210 seconds in two conditions of solid fractions, 45 and 60%, and to viscosity assays under the same conditions. Heat treatments promote the globularization of primary phase particles; hence, the best viscosity results were achieved for alloys with low solid fractions heat-treated for 210 seconds. Alloys AA7004 and AA7075 showed an apparent viscosity of 10 4 to 10 5 (Pa.s). The behavior of materials in this range is similar to that of molten glass and they show high formability. However, the AA7075 alloy showed a better performance than the AA7004 due to the smaller size of its primary particles and original grains, their lower growth during reheating, and depending on the condition, their viscosity of 10 4 Pa.s, which is extremely low for thixoforming standards.

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Section: Characterization Of the Rheological Behaviormentioning

confidence: 59%

EValuation of the thixoformability of AA7004 and AA7075 alloys

Zoqui

Torres

2010

Mat. Res.

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“…However, the stress rapidly decreased due to the deformation of material through liquid flow after a certain degree of densification occurred. Then, the stress increased again as only the solid phase was compacted after the liquid had flown to the edge of the specimen [13].…”

Section: Plasticity Theory For the Liquid Flow Of Rheologymentioning

confidence: 99%

Numerical simulation of mold filling and deformation behavior in rheology forming process

Kang

Bae

2008

International Journal of Mechanical Sciences

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“…[12][13][14] Recently, the slurry course of aluminum alloys with better mechanical properties compared to parts made by conventional casting had been used for the fabrication of parts without mold molding method and attracted the attentions of scholar, using the merit of semisolid slurry forming processing. [15][16][17] SRCM is a pioneering metal processing technology. The finished liquid metal is pressed out from the outlet of base of crucible with a horizontal movable plate assembled near the outlet.…”

Section: Introductionmentioning

confidence: 99%

Effect of the pouring temperature by novel synchronous rolling-casting for metal on microstructure and properties of ZLl04 alloy

Luo

Yan

2016

J. Mater. Res.

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A novel synchronous rolling-casting for metal (SRCM) process for producing metal components is developed. In this paper, the microstructure evolution and mechanical property of ZLl04 alloy with different pouring temperatures by SRCM are investigated. In the process, the pouring temperature has great effects on the microstructure and mechanical property primarily through the crystal change in the rolling-casting area. Temperature of liquids and solids of ZL104 alloy is measured by differential scanning calorimetry. Distribution and characteristics of the microstructure of samples are examined by optical microscopy, scanning electron microscopy equipped with energy dispersive spectrometer. The results show that the samples fabricated by SRCM present uniform structure and good performance with the pouring temperature at 620°C when the velocity of the substrate is at 10 cm/s. The tensile strength of ZLl04 alloy reaches 211.89 Mpa, while the average vickers hardness is 81.5 HV.

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The effect of strain rate on macroscopic behavior in the compression forming of semi-solid aluminum alloy

Cited by 82 publications

References 2 publications

EValuation of the thixoformability of AA7004 and AA7075 alloys

EValuation of the thixoformability of AA7004 and AA7075 alloys

Numerical simulation of mold filling and deformation behavior in rheology forming process

Effect of the pouring temperature by novel synchronous rolling-casting for metal on microstructure and properties of ZLl04 alloy

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