期刊
METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE
卷 46A, 期 12, 页码 5871-5876出版社
SPRINGER
DOI: 10.1007/s11661-015-3150-7
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资金
- National Natural Science Foundation of China [51101052]
- National Science Foundation [1358088]
- Office Of The Director
- Office Of Internatl Science &Engineering [1358088] Funding Source: National Science Foundation
Hot deformation behavior of the Cu-2Ni-0.5Si-0.15Ag alloy was investigated by hot compression tests using the Gleeble-1500D thermo-simulator in the 873 K to 1073 K (600 degrees C to 800 degrees C) temperatures range with the 0.01 to 5 s(-1) strain rate. The flow stress strongly depends on the deformation parameters, including temperature and strain rate. The flow stress decreases with the deformation temperature and increases with the strain rate. The constitutive relationship between the peak stress, the strain rate, and the deformation temperature can be described by the Zener-Hollomon Z parameter in the hyperbolic sine function with the hot deformation activation energy of 316 kJ/mol. The dynamic recrystallization (DRX) is one of the important softening mechanisms of the Cu-2Ni-0.5Si-0.15Ag alloy during hot deformation. The DRX behavior of the Cu-2Ni-0.5Si-0.15Ag alloy is strongly affected by the Z parameter. Lower Z parameter leads to more adequate DRX proceeding. (C) The Minerals, Metals & Materials Society and ASM International 2015
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