Portevin-Le Chatelier plastic instabilities: characteristics of deformation bands
作者： M. Dablij , A. Zeghloul
DOI: 10.1016/S0921-5093(97)00101-9
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摘要: Abstract Two aluminium-magnesium alloys (5182 and 5754) were investigated at room temperature. Tests conducted on a soft tensile machine in the stress rates range where Portevin-Le Chatelier (PLC) phenomena occur. Experimental measurements deformation bands associated with PLC effect have shown that band strain e b decreases increasing rate σ ˙ low values of . At high rates, however, increases The propagation velocity V applied rate. critical c for occurrence rates. an inverse behaviour is observed. All experimental results obtained show there similarity between
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