Two different thermal treatments were applied to polycarbonate (PC) in terms of slow cooling (annealed samples) after a thermal treatment at a temperature above the glass-transition temperature or abrupt cooling in a liquid-nitrogen environment (quenched samples). Tensile and compression experiments were performed on the two types of samples at three different effective strain rates. A viscoplastic model based on the fundamental assumptions of the Eyring model and on a kinematic formulation, which separated the viscoelastic and plastic strain, developed in previous works, was used to describe the yield and post-yield behavior of thermally treated PC. The different thermal treatments affected the parameters of the material microstructure. A satisfactory agreement between the experimental data and calculated results was found. (c) 2005 Wiley Periodicals, Inc.
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机译：聚碳酸酯（PC）在高于玻璃化转变温度的温度下进行热处理后缓慢冷却（退火样品）或在液氮环境中突然冷却（淬火样品）方面，对聚碳酸酯（PC）进行了两种不同的热处理。在三种不同的有效应变率下对两种类型的样品进行了拉伸和压缩实验。基于Eyring模型的基本假设和运动学公式的粘塑性模型，将粘弹性和塑性应变分开，在以前的工作中，用于描述热处理PC的屈服和屈服后行为。不同的热处理会影响材料微观结构的参数。实验数据与计算结果吻合较好。（c） 2005 Wiley Periodicals， Inc.
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