Results 251 to 260 of about 52,963 (289)

Optimization of a hot deformation process of the 3003 aluminum alloy by processing maps

Metals and Materials International, 2012
Hot deformation behavior of the 3003 Al alloy was investigated by conducting hot compression tests at various temperatures (300–500 °C) and strain rates (0.0l–10.0 s−1). A constitutive equation was established to describe the flow behavior. The apparent activation energy of the 3003 Al alloy was determined to be 174.62 kJ·mol−1, which is higher than ...
Guiqing Chen, Gaosheng Fu, Hongling Chen, Chaozeng Cheng, Wenduan Yan, Shaoyi Lin   +5 more
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Processing map for the hot working of Ti-8Ta-3Nb

Journal of Mechanical Science and Technology, 2008
This paper considers the deformation behavior during hot forging in as-cast and forged specimens of Ti-8Ta-3Nb. The experimental specimens are as-cast and forged specimens of Ti-8Ta-3Nb. The deformation behavior of Ti-8Ta-3Nb alloy has been characterized on the basis of its flow stress variation obtained by true strain rate compression testing in the ...
Kyung Won Lee, Jae Sam Ban, Min Geun Lee, Gyu Ha Kim, Kyu Zong Cho   +4 more
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Hot deformation and processing maps of Inconel 690 superalloy

Journal of Nuclear Materials, 2011
Abstract The hot deformation behavior of Inconel 690 has been investigated by means of hot compression tests in the temperature range of 950–1200 °C and strain rate range of 0.001–10 s −1 . The results show that the maximum stress decreases with decreasing strain rate and increasing temperature, and the activation energy is about 380.215 kJ/mol ...
Shengli Guo, Defu Li, Haijia Pen, Qingmiao Guo, Jie Hu   +4 more
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Hot deformation and processing map of 2519A aluminum alloy

Materials Science and Engineering: A, 2011
Abstract The flow stress features of 2519A aluminum alloy have been studied by isothermal compression in the temperature range from 300 to 450 °C with strain rates of 0.01–10 s −1 on Gleeble-1500 machine. The results show that the deformation temperature and the strain rate have obvious effects on the flow characteristic, and the flow stress ...
H.Z. Li, H.J. Wang, X.P. Liang, H.T. Liu, Y. Liu, X.M. Zhang   +5 more
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Determination of Hot Workability of 5Cr5MoSiV1 Steel Based on Hot Processing Map

steel research international
The evaluation of the hot workability of 5Cr5MoSiV1 steel with high deformation resistance is crucial for the controllability of the hot forging process. Based on the isothermal compression at deformation temperature of 950–1200 °C and strain rate of 0.01–10 s−1, the flow behavior of 5Cr5MoSiV1 steel is demonstrated.
Yong Shang, Mingjia Wang, Lianjing Hao, Zhongli Liu, Lu Wen, Zhihui Sun, Chaoyang Sun   +6 more
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Hot Deformation Characteristics of GH625 and Development of a Processing Map

Journal of Materials Engineering and Performance, 2013
The hot deformation behavior of GH625 is investigated by a compression test in the temperature range of 950-1150 °C and the strain rate of 10−3-5 s−1. It is found that the flow stress behavior is described by the hyperbolic sine constitutive equation with average activation energy of 421 kJ/mol.
H. T. Zhou, R. R. Liu, Z. C. Liu, X. Zhou, Q. Z. Peng, F. H. Zhong, Y. Peng   +6 more
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Processing map for hot working of Inconel 718 alloy

Journal of Materials Processing Technology, 2011
Abstract Cylindrical specimens of Inconel 718 alloy with grain size of 90 μm were used in the compression tests and processing maps at the strains of 0.1, 0.3, 0.5 and 0.7 were developed at 950–1150 °C in the strain rate range 0.001–100 s−1. Only one unstable region for adiabatic shear bands and one small dynamic recrystallization zone in the stable ...
Feng-Li Sui, Li-Xia Xu, Li-Qing Chen, Xiang-Hua Liu   +3 more
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Hot deformation and processing maps of Al18B4O33w/ZK60 composite

Materials Science and Engineering: A, 2008
The hot deformation behavior of ZK60 magnesium alloy reinforced with 20 vol.% of Al18B4O33 whisker has been studied by employing both processing maps and microstructural observations. The material of investigation was deformed by compression in the temperature range of T = 523–723 K and strain rate range of e˙=0.001−10s−1.
C.Y. Wang, K. Wu, M.Y. Zheng
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Processing maps for hot working of ZK60 magnesium alloy

Materials Science and Engineering: A, 2007
Abstract The hot working behavior of ZK60 magnesium alloy by squeeze casting has been studied in the temperature range of 523–723 K and strain rate range of 0.001–10 s −1 by establishing processing maps. The strain rate sensitivity ( m ), power dissipation efficiency ( η ) and instability parameter ( ξ ( e ˙ ) ) were computed based ...
C.Y. Wang, X.J. Wang, H. Chang, K. Wu, M.Y. Zheng   +4 more
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Hot Deformation Behavior and Processing Maps of Zr92Ti8 Alloy

Journal of Materials Engineering and Performance, 2020
The hot deformation behavior of Zr92Ti8 alloy in the β-phase field was investigated by compression tests at deformation temperatures from 800 to 1050 °C and strain rates from 10−3 to 100 s−1. The true stress–strain curves exhibited a flow softening phenomenon caused by adiabatic heating and dynamic recrystallization (DRX).
Y. W. Dong, Y. B. Tan, L. Y. Ji, J. X. Zhang, W. C. Liu   +4 more
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