Critical damage value of AZ31B magnesium alloy with different temperatures and strain rates

Dong, Jingren; Dong, Yufeng; Pan, Fusheng; Chai, Sensen

doi:10.1007/s12598-014-0440-y

Cited by 14 publications

(9 citation statements)

References 20 publications

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“…q is the average heat flux density of the crystallizer, W/m 2 ; μ w is the density of cooling water, kg/m 3 ; c w is the heat capacity of cooling water, J/(kg•k); W is the flow of cooling Relation between FE mesh and CA cells. 29) water, m 3 /s; ¦T is the water temperature difference in the import and export of the crystallizer, K; S is the effective contact area of liquid metal and crystallizer, m 2 .…”

Section: Setting Of Boundary Conditionsmentioning

confidence: 99%

Numerical Simulation of Solidification Structures of Ag–28Cu–1Ni Alloy through Continuous Casting Based on Three-Dimensional CAFE Method

et al. 2020

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Microstructure evolution of Ag28Cu1Ni alloy during the continuous casting process was simulated based on 3D-CAFE method, and the effect of the mean nucleation undercooling and the distance from the bottom of the ingot to the cross section on the solidification structure were studied. Furthermore, the effects of pouring temperature, heat transfer coefficient and pulling speed on solidification structure were also investigated. The results show that the simulated results are in agreement with the experimental results. The solidification structure consists of four parts, including region of surface fine grain, zone of columnar grain, transition zone of CET (columnar to equiaxed grain transition) and region of center equiaxed grain. The higher the mean undercooling, the larger the columnar dendrite zone. The ¦T v,max = 5 K is determined as an important simulation parameter to simulate the microstructure evolution. As the cross-section increases from the bottom of the ingot, the columnar crystal regions gradually expand. Moreover, lowering the pouring temperature, increasing the heat transfer coefficient or improving the pulling speed have the beneficial effect on grain refinement. Under the optimal process conditions, the largest proportion of equiaxed grains and the finer grain size is present in the solidified structure.

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Section: Setting Of Boundary Conditionsmentioning

confidence: 99%

Numerical Simulation of Solidification Structures of Ag–28Cu–1Ni Alloy through Continuous Casting Based on Three-Dimensional CAFE Method

et al. 2020

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“…The critical damage value can be obtained by a uniaxial tensile test. Using traditional methods, 9,21 it is difficult to measure the equivalent stress s. As the true strain e 1 increases, the damage value of the specimen accumulates until fracture in uniaxial tensile testing. In addition, the maximum tensile stress is the main factor causing fracture in uniaxial tension.…”

Section: Determination Of the Critical Damage Value In The Ncandl Criterionmentioning

confidence: 99%

“…The criterion is uncoupled from the plastic evolution of pipe materials, which is a cumulative damage model. 21 Thus, based on the isotropic and homogeneous assumption of pipe materials in Section 2, an implicit FEM package, Abaqus/Standard, is implemented using the implicit user subroutine USDFLD to calculate the damage value of the bending process. 23 The numerical formula is expressed as follows 13 :…”

Section: Coupling Of the Ncandl Damage Criteria With Femmentioning

confidence: 99%

Plastic-yielding analysis in the pipe-bending process of AZ31 and AA7050 using the normalized Cockcroft and Latham criterion

Xue

Niu

2020

The Journal of Strain Analysis for Engineering Design

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Compared with other sheet-metal-forming processes, the deformation conditions of pipe bending are affected by the material, equipment, die, and multiple other factors. Therefore, it is urgent to explore methods that avoid forming defects and improve the bend-forming quality. Wall-thinning induced ductile fracture is one of the dominant defects in the pipe-bending process, especially for materials with lower ductility. In this study, the normalized Cockcroft and Latham criterion is embedded into the user subroutine USDFLD within the Abaqus finite element (FE) software to predict the fracture tendency of a bent pipe. Through a comparison of theoretical calculations and simulation results, a simplified FE model of rotary draw bending was established, and the damage evolution and distribution of bent pipes composed of AZ31 and AA7050 materials were investigated. The results show that the two materials have similar regularity, and damage mainly generates and accumulates in the outer surface of the deformation zone due to wall thinning. The damage value remains at a certain level after the bending deformation enters the stable stage. This study provides a concept and strategy for more efficiently predicting the fracture tendency of a bent pipe.

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“…Meanwhile, some novel processes have also been presented to realize lightweight, such as mechanical clinching (MC) [6,7], hole-clinching [8,9], self-pierce riveting (SPR) [10,11], shear clinching [12], friction stir welding (FSW) [13], and friction riveting (FR) [14]. In terms of material lightweight, many light materials are used, like aluminium [6,15], titanium [14,16], magnesium [13,17], and fiber-reinforced plastic (such as CFRP and GFRP) [8,10]. In the automotive industry, the body-in-white is developing from an all-steel body to a multi-material hybrid body, such as steel-aluminium hybrid and light alloy-composite hybrid.…”

Section: Introductionmentioning

confidence: 99%

Research on the mechanical clinching process for the metal–polymer multilayer structure

Ouyang

Chen

2023

Materials Science and Technology

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With the wide application of lightweight materials, the metal–polymer multilayer structure has become a research focus owing to the advantages of lower weight and higher vibration damping. In the current work, the mechanical clinching process of the metal–polymer multilayer structure between Al5052-H32 and polyoxymethylene was investigated. The effect of diverse plate configurations and different test specimen forms on the mechanical characteristics was analysed in terms of geometric parameters, static strength, failure modes and energy absorption. The results showed that the metal–polymer multilayer structure could be successfully connected utilizing the mechanical clinching process. The cross-tension load and lap-shear load of the joint were greatly affected by the plate configuration as well as the test specimen form.

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Critical damage value of AZ31B magnesium alloy with different temperatures and strain rates

Cited by 14 publications

References 20 publications

Numerical Simulation of Solidification Structures of Ag–28Cu–1Ni Alloy through Continuous Casting Based on Three-Dimensional CAFE Method

Numerical Simulation of Solidification Structures of Ag–28Cu–1Ni Alloy through Continuous Casting Based on Three-Dimensional CAFE Method

Plastic-yielding analysis in the pipe-bending process of AZ31 and AA7050 using the normalized Cockcroft and Latham criterion

Research on the mechanical clinching process for the metal–polymer multilayer structure

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