| Effect of processing parameters on the electromagnetic radiation emission during plastic deformation and crack propagation in copper-zinc alloys |
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| 作者姓名： | KUMAR Rajeev MISRA Ashok |
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| 作者单位： | Department of Mechanical Engineering Birla Institute of Technology Mesra 835215 Ranchi India，Department of Mechanical Engineering Birla Institute of Technology Mesra 835215 Ranchi India |
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| 基金项目： | Project supported by Department of Science and Technology, India |
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| 摘 要： | INTRODUCTION The physics of plastic deformation and crack propagation at atomic level is complex but is essential for the development of new materials. This requires an understanding of the atomic level phenomena associated with the plastic deformation. In this con- text, emission of electromagnetic radiation (EMR) during plastic deformation and crack propagation in metals and alloys, and generation of transient mag- netic fields during crack initiation in ferromagnetic materials are rep…
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| 关 键 词： | 辐射 塑性变形 轧制方向 退火 破裂 铜合金 |
| 收稿时间： | 2006-03-20 |
| 修稿时间： | 2006-08-08 |
Effect of processing parameters on the electromagnetic radiation emission during plastic deformation and crack propagation in copper-zinc alloys |
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| KUMAR Rajeev,MISRA Ashok.Effect of processing parameters on the electromagnetic radiation emission during plastic deformation and crack propagation in copper-zinc alloys[J].Journal of Zhejiang University Science,2006,7(11):1800-1809. |
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| Authors: | Rajeev Kumar Ashok Misra |
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| Institution: | (1) Department of Mechanical Engineering, Birla Institute of Technology, Mesra, 835215 Ranchi, India |
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| Abstract: | This paper presents some investigations on the effect of processing parameters on the emission of electromagnetic radiation
(EMR) during plastic deformation and crack propagation in copper-zinc alloys. Timing of the EMR emissions, maximum stress
during crack instability, stress-intensity factor, elastic strain energy release rate, maximum EMR amplitude, RMS value of
EMR amplitude, EMR frequency and electromagnetic energy release rate were analysed for the effect of rolling directions at
different percentage of zinc content in Cu-Zn alloy specimens. The same parameters were also analysed for 68-32 Cu-Zn alloy
specimens at different annealing temperatures and at different angles ϑ, to the rolling direction. EMR emissions are observed to be highly anisotropic in nature. At ϑ=45° to 60°, marked changes in mechanical and electromagnetic parameters were observed. Specimens annealed at 500 °C, just
above the recrystallization temperature, and at 700 °C, when grain-size growth is rapid, EMR responses have been found to
have well-defined patterns.
Project supported by Department of Science and Technology, India |
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| Keywords: | Radiation Plastic deformation Rolling direction Annealing Fracture |
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