Study on process parameters optimization of 7075‑T6 aluminum alloy under contact heating

• Autorzy: Ma Haishuang , Sun Lu , Zhang Zhiqiang , Jia Hongjie , Ren Mingwen

Identyfikatory

DOI

10.1007/s43452-024-00913-w

• Języki publikacji: EN

Abstrakty

EN

To solve the problem of poor formability of 7075-T6 aluminum alloy at room temperature and the degradation of properties after conventional warm forming, this paper put forward the contact heating warm forming (CHWF) process, which can make aluminum alloy blank reach the forming temperature in a very short time through the heated plates with pressure. Firstly, the uniaxial warm tensile tests with contact heating were carried out at 160-240 °C. Then the parameters of CHWF, namely forming temperature, contact pressure and holding time, were optimized based on the response surface and genetic algorithm. The U-shaped parts were obtained by using the optimal parameters. The results showed that the work hardening and dynamic recovery softening of 7075-T6 aluminum alloy at 200 °C could reach an equilibrium state, and the uniform plastic deformation ability was strong. The optimal parameters of CHWF were the forming temperature of 200 °C, the contact pressure of 10 MPa, and the holding time of 16 s. The U-shaped parts obtained by the optimal process had a small springback angle. Compared with the warm forming by using heating furnace, η′ precipitate did not grow significantly under CHWF condition and the hardness could reach 93% of T6 state.

Słowa kluczowe

EN

7075-T6 aluminum alloy; contact heating; warm forming; response surface method; genetic optimization

PL

stop aluminium 7075-T6; formowanie na gorąco; metoda powierzchni odpowiedzi; optymalizacja genetyczna

• Wydawca: Springer ; Wrocław University of Science and Technology
• Czasopismo: Archives of Civil and Mechanical Engineering
• Rocznik: 2024
• Tom: Vol. 24, no. 2
• Strony: art. no. e98, 2024
• Opis fizyczny: Bibliogr. 25 poz., rys., tab., wykr.

Twórcy

autor

Ma Haishuang

• Key Laboratory of Automobile Materials, School of Material Science and Engineering, Ministry of Education and School of Material Science and Engineering, Jilin University, 5988 Renmin Street, Changchun 130022, China

autor

Sun Lu

• Key Laboratory of Automobile Materials, School of Material Science and Engineering, Ministry of Education and School of Material Science and Engineering, Jilin University, 5988 Renmin Street, Changchun 130022, China

autor

Zhang Zhiqiang

• Key Laboratory of Automobile Materials, School of Material Science and Engineering, Ministry of Education and School of Material Science and Engineering, Jilin University, 5988 Renmin Street, Changchun 130022, China

• https://orcid.org/0000-0001-9281-0745

autor

Jia Hongjie

• Key Laboratory of Automobile Materials, School of Material Science and Engineering, Ministry of Education and School of Material Science and Engineering, Jilin University, 5988 Renmin Street, Changchun 130022, China

autor

Ren Mingwen

• Key Laboratory of Automobile Materials, School of Material Science and Engineering, Ministry of Education and School of Material Science and Engineering, Jilin University, 5988 Renmin Street, Changchun 130022, China

Bibliografia

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Uwagi

Opracowanie rekordu ze środków MNiSW, umowa nr POPUL/SP/0154/2024/02 w ramach programu "Społeczna odpowiedzialność nauki II" - moduł: Popularyzacja nauki (2025).