Experimental studies and modeling of strain rate- and temperature-dependent springback behavior of hot-deformed aluminum alloys

Hou, Hongli; Zhao, Guoqun; Yu, Junquan; Sun, Yeneng; Li, Huiping

doi:10.1016/j.jmatprotec.2023.118029

Cited by 10 publications

(2 citation statements)

References 31 publications

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“…The filler metal and base metal were regarded as the same material, and its thermos-physical properties only changed with temperature, as represented by Eqs. (1)(2)(3)(4)(5). Other physical parameters were constants as listed in Table 1.…”

Section: Geometric Models and Thermos-physical Propertiesmentioning

confidence: 99%

“…Al-alloy structural parts were predominantly used in the field of lightweight design, such as aerospace and automobiles, because of its advantages of low density and high specific strength [1][2][3] . It was developing towards high precision, large size and complex shapes, which put higher demands on the manufacturing technology of Al-alloy parts.…”

Section: Introductionmentioning

confidence: 99%

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Numerical simulation of molten pool behavior and bead formation in Al-alloy GMAW board surfacing process

Zong

Zhang

et al. 2023

Preprint

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A transient 3D numerical model was established to investigate the multi-coupling transport phenomena in the Al-alloy GMAW board surfacing process. An integrated self-adaptive distribution mode of "arc current density-arc pressure-electromagnetic force-arc heat" was proposed to adapt to the evolution of the surface morphology of the molten pool. The heat and force state of the molten pool was analyzed to investigate its influence on the bead formation. The results showed that the arc pressure and droplet impingement promoted the backward flow of the liquid metal, thus forming the gouging region. It decreased the concentration of the arc current density, thereby reducing the superheat of the liquid metal and facilitating the filling of the weld toe. Based on the characteristics of the temperature and velocity fields, the characteristics of weld formation in the three stages of arc preheating, melting, and solidification were analyzed. This study revealed the relationship between molten pool behavior and bead formation, promoting the implementation of Al-alloy GMAW in welding and additive manufacturing.

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