Prediction of High Strain Rate Flow Behavior of 7175 Aluminum Alloy Based on Arrhenius-Type Constitutive Equations

• Autorzy: Shin Young-Chul , Joung Dae-Kwan , Ha Seong-Ho , Choi Ho-Joon , Hyun Soong-Keun

Identyfikatory

DOI

10.24425/amm.2020.133700

• Języki publikacji: EN

Abstrakty

EN

The flow behavior of 7175 aluminum alloy was modeled with Arrhenius-type constitutive equations using flow stress curves during a hot compression test. Compression tests were conducted at three different temperatures (250°C, 350°C, and 450°C) and four different strain rates (0.005, 0.05, 0.5, and 5 s^-1). A good consistency between measured and set values in the experimental parameters was shown at strain rates of 0.005, 0.05, and 0.5 s^-1, while the measured data at 5 s^-1 showed the temperature rise of the specimen, which was attributable to deformation heat generated by the high strain rate, and a fluctuation in the measured strain rates. To minimize errors in the fundamental data and to overcome the limitations of compression tests at high strain rates, constitutive equations were derived using flow curves at 0.005, 0.05, and 0.5 s^-1 only. The results indicated that the flow stresses predicted according to the derived constitutive equations were in good agreement with the experimental results not only at strain rates of 0.005, 0.05, and 0.5 s^-1 but also at 5 s^-1. The prediction of the flow behavior at 5 s^-1 was correctly carried out by inputting the constant strain rate and temperature into the constitutive equation.

Słowa kluczowe

EN

aluminum alloy; hot compression; Arrhenius-type equation; high strain rate flow behavior; flow stress

• Wydawca: Institute of Metallurgy and Materials Science of Polish Academy of Sciences ; Committee of Materials Engineering and Metallurgy of Polish Academy of Sciences
• Czasopismo: Archives of Metallurgy and Materials
• Rocznik: 2020
• Tom: Vol. 65, iss. 4
• Strony: 1361--1364
• Opis fizyczny: Bibliogr. 13 poz., rys., wzory

Twórcy

autor

Shin Young-Chul

• Korea Institute of Industrial Technology (KITECH), Incheon 21999, Republic of Korea
• Inha University, Incheon 22212, Republic of Korea

autor

Joung Dae-Kwan

• Korea Institute of Industrial Technology (KITECH), Incheon 21999, Republic of Korea

autor

Ha Seong-Ho

• Korea Institute of Industrial Technology (KITECH), Incheon 21999, Republic of Korea

autor

Choi Ho-Joon

• Korea Institute of Industrial Technology (KITECH), Incheon 21999, Republic of Korea

autor

Hyun Soong-Keun

• Inha University, Incheon 22212, Republic of Korea

Bibliografia

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Uwagi

EN

1. This work was supported by the Technology Innovation Program (10073115, Development of Energy-Saving Type Constant-Speed Extrusion System for High Strength Al Alloys) funded By the Ministry of Trade, Industry & Energy (MOTIE, Korea).

PL

2. Opracowanie rekordu ze środków MNiSW, umowa Nr 461252 w ramach programu "Społeczna odpowiedzialność nauki" - moduł: Popularyzacja nauki i promocja sportu (2020).