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ZJUS-A
Journal of Zhejiang University-SCIENCE A (Applied Physics & Engineering)  2006, Vol. 7 Issue (11): 3-    DOI: 10.1631/jzus.2006.A1800
    
Effect of processing parameters on the electromagnetic radiation emission during plastic deformation and crack propagation in copper-zinc alloys
KUMAR Rajeev, MISRA Ashok
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.

Key words： Radiation      Plastic deformation      Rolling direction      Annealing      Fracture     
Received: 20 March 2006     
CLC:  TG139.7  
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KUMAR Rajeev
MISRA Ashok
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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. Journal of Zhejiang University-SCIENCE A (Applied Physics & Engineering), 2006, 7(11): 3-.

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http://www.zjujournals.com/xueshu/zjus-a/10.1631/jzus.2006.A1800     OR     http://www.zjujournals.com/xueshu/zjus-a/Y2006/V7/I11/3

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