The deformation behavior of as-quenched 2024 Al–Cu–Mg alloy has been experimentally studied. The experiments are designed to cool specimens to the desired temperature with a constant cooling rate, i.e., 5 K/s. Isothermal tensile tests are performed over a range of 573–723 K temperature and (0.01, 0.1, and 1 s−1) strain rates to find out the flow stresses and microstructures after deformation. Due to the nonuniform deformation mechanisms (solid solution versus solid solution and precipitation), two types of Arrhenius model are established for the temperature range of 573–673 K and 673–723 K, respectively. For temperature between 573 and 673 K, the activation energy is dependent on temperature and strain rate, and the value of activation energy decreases with the increases of temperature and strain rate. Compared with the ideal variation trend with no consideration of precipitation, the largest difference of activation energy is found at the temperature of 623 K which is the nose temperature of 2024 alloy.
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October 2018
Research-Article
Constitutive Behavior for Quenching of Al–Cu–Mg Alloy With Consideration of Precipitation
Jianjun Wu,
Jianjun Wu
School of Mechanical Engineering,
Northwestern Polytechnical University,
127 West Youyi Road,
Xi'an 710072, China
e-mail: wujj@nwpu.edu.cn
Northwestern Polytechnical University,
127 West Youyi Road,
Xi'an 710072, China
e-mail: wujj@nwpu.edu.cn
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Ruichao Guo
Ruichao Guo
School of Mechanical Engineering,
Northwestern Polytechnical University,
Xi'an 710072, China
e-mail: ytgrc@163.com
Northwestern Polytechnical University,
Xi'an 710072, China
e-mail: ytgrc@163.com
Search for other works by this author on:
Jianjun Wu
School of Mechanical Engineering,
Northwestern Polytechnical University,
127 West Youyi Road,
Xi'an 710072, China
e-mail: wujj@nwpu.edu.cn
Northwestern Polytechnical University,
127 West Youyi Road,
Xi'an 710072, China
e-mail: wujj@nwpu.edu.cn
Ruichao Guo
School of Mechanical Engineering,
Northwestern Polytechnical University,
Xi'an 710072, China
e-mail: ytgrc@163.com
Northwestern Polytechnical University,
Xi'an 710072, China
e-mail: ytgrc@163.com
1Corresponding author.
Contributed by the Materials Division of ASME for publication in the JOURNAL OF ENGINEERING MATERIALS AND TECHNOLOGY. Manuscript received September 23, 2017; final manuscript received May 7, 2018; published online June 22, 2018. Assoc. Editor: Said Ahzi.
J. Eng. Mater. Technol. Oct 2018, 140(4): 041009 (10 pages)
Published Online: June 22, 2018
Article history
Received:
September 23, 2017
Revised:
May 7, 2018
Citation
Wu, J., and Guo, R. (June 22, 2018). "Constitutive Behavior for Quenching of Al–Cu–Mg Alloy With Consideration of Precipitation." ASME. J. Eng. Mater. Technol. October 2018; 140(4): 041009. https://doi.org/10.1115/1.4040339
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