Effect of Hot Metal Gas Forming Process on Formability and Microstructure of 6063 Aluminum Alloy Double Wave Tube

Xu, Yong; Lv, Xiu-Wen; Wang, Yun; Zhang, S H; Xie, Wenlong; Xia, Liang-Liang; Chen, Shuai-Feng

doi:10.3390/ma16031152

Cited by 4 publications

(2 citation statements)

References 34 publications

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“…Hot gas forming technology is a process that heats the aluminum alloy to a certain temperature, inflating the blank to bulge into the same shape as the die cavity, and has the shape and performance of the structural parts [1]. Increasing the forming temperature, enhancing the plasticity of aluminum alloy, and adjusting the process parameters are performed to control the strain and strain rate hardening during the forming process of high-strength aluminum alloys, as well as achieve a uniform wall thickness, microstructure, and properties of the formed parts [2,3]. Hot gas forming technology of aluminum alloy can be widely used in the automotive, aerospace, and electronics industries [4,5].…”

Section: Introductionmentioning

confidence: 99%

Experimental and modeling study of the interfacial and convective heat transfer coefficients of 6061 aluminum alloy in hot gas forming

lin,

Li,

Zheng

et al. 2024

Preprint

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Heat transfer coefficient, including interfacial heat transfer coefficient (IHTC) and convective heat transfer coefficient (CHTC), plays a pivotal role in the thermal dynamics of the hot gas forming process. This parameter can optimize the temperature field, thereby affecting the deformation and mechanical properties of the material to improve productivity. In this paper, we present an innovative experimental apparatus designed to measure the temperature evolutions of the aluminum specimen and the die during the hot gas forming process. This apparatus is capable of simultaneously measuring IHTC and CHTC. Using the inverse finite element method, the simulated temperature histories are matched with empirical data and the best-fit values are adopted as indicative of IHTC and CHTC. This study identified the effects of contact pressure and die temperature on IHTC, as well as the impact of gas pressure on CHTC. In addition, predictive models were developed to forecast the IHTC and CHTC at varying contact pressures and die temperatures with a prediction accuracy surpassing 0.95. Leveraging the predictive models presented in this paper, users can modulate contact pressure and die temperature based on specific production needs to achieve a targeted temperature profile. This method offers enhanced precision in managing the temperature field of the workpiece during hot gas forming experiments, thereby refining the temperature distribution. Moreover, it optimizes the formability and microstructural attributes of the material, ultimately leading to better mechanical characteristics.

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Section: Introductionmentioning

confidence: 99%

Experimental and modeling study of the interfacial and convective heat transfer coefficients of 6061 aluminum alloy in hot gas forming

lin,

Li,

Zheng

et al. 2024

Preprint

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show abstract

“…The hot stamping-in-die quenching composite forming process (HFQ) for aluminum alloys was proposed by Lin [ 27 , 28 , 29 , 30 , 31 , 32 ]. This process is an ideal method for solving the problems of aluminum alloys at room temperature and is more productive than SPF [ 33 , 34 , 35 , 36 ]. Fan et al [ 37 ] investigated the HFQ process of 6A02 aluminum alloy sheets at different forming-die temperatures ranging from 50 °C to 350 °C and found the temperature should not be higher than 250 °C to obtain a sufficient strengthening effect.…”

Section: Introductionmentioning

confidence: 99%

Investigation of the Hot Stamping-in-Die Quenching Composite Forming Process of 5083 Aluminum Alloy Skin

Tang

et al. 2023

Materials

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Aluminum alloy has been used as the skin material for rail vehicles and automobiles to meet the requirements of environmental protection. The hot stamping-in-die quenching composite forming (HFQ) process is a promising technology to compensate for the poor formability of the aluminum alloy sheet at room temperature. In this paper, the high-temperature mechanical properties of 5083 aluminum alloy under various temperature (200 °C, 300 °C, 400 °C, 450 °C) and strain rate conditions (0.01 s−1, 0.10 s−1, 1.00 s−1) were investigated by uniaxial tensile tests. The finite element software of PAM-STAMP was employed to simulate the forming process of high-speed train skin. The effects of forming method and process parameters on the minimum thickness and springback of the skin were analyzed using the Response Surface Methodology (RSM). After parameter optimization, the forming experiment verified the simulation results and the test part met the quality requirements: the thickness above 3.84 mm and the springback within 1.1 mm. Mechanical properties of the sheet before and after HFQ were examined by uniaxial tensile tests at room temperature. It can be inferred from the comparison that the yield strength of the Al5083 sheet increases, but the elongation decreases from the HFQ process.

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Evolution of hot metal gas forming (HMGF) technologies and its applications: a review

Blala,

Pengzhi,

Shenglun

et al. 2024

Int J Adv Manuf Technol

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Effect of Hot Metal Gas Forming Process on Formability and Microstructure of 6063 Aluminum Alloy Double Wave Tube

Cited by 4 publications

References 34 publications

Experimental and modeling study of the interfacial and convective heat transfer coefficients of 6061 aluminum alloy in hot gas forming

Experimental and modeling study of the interfacial and convective heat transfer coefficients of 6061 aluminum alloy in hot gas forming

Investigation of the Hot Stamping-in-Die Quenching Composite Forming Process of 5083 Aluminum Alloy Skin

Evolution of hot metal gas forming (HMGF) technologies and its applications: a review

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