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本工作利用透射电子显微镜研究了两种丝径不同的掺杂钨丝的再结晶组织特征,0.4mm的钨丝在2100℃退火状态下呈现不均匀再结晶,而1.25mm的钨丝却强烈地反映出钾泡阻碍晶界迁移和对位错的钉扎作用。作者指出:在研究0.4mm以下掺杂钨丝的再结晶行为时,钾泡的分布状态固然重要,但还应着重研究深度拉拔在纤维组织和织构方面对延缓再结晶过程的作用。对这个问题的深入研究,有利于寻求合理的工艺参数。
In this work, the recrystallization characteristics of two tungsten wires with different wire diameters were investigated by transmission electron microscopy. The 0.4mm tungsten wire showed non-uniform recrystallization at 2100 ℃, while the 1.25mm tungsten wire was strongly It reflects that potassium bubbles impede grain boundary migration and pinning effect on dislocation. The authors point out that while investigating the recrystallization behavior of tungsten wire below 0.4mm, the distribution of potassium bubbles is important, but the role of deep drawing in delaying the recrystallization process in fiber organization and texture should also be emphasized. In-depth study of this issue is conducive to finding a reasonable process parameters.