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Influence of pulse current on the microstructure and mechanical property during continuous cooling of EA4T steel
Pages: 31-33
Year: Issue:  3
Journal: Ordnance Material Science and Engineering

Keyword:  脉冲电流EA4T钢奥氏体晶界先共析铁素体;
Abstract: 针对EA4T钢车轴淬火过程中心部会析出大量大尺寸先共析铁素体的问题,采用脉冲电流辅助加热方法,研究冷却过程中脉冲电流与先共析铁素体析出的关系.EA4T钢试样加热至900℃保温20 min后,以25qC/min冷速冷却,并在冷却过程中通入一定参数的脉冲电流.结果表明,由于脉冲电流辅助加热的热效应,推迟了相变过程中先共析铁素体在奥氏体晶界处的析出.与未通脉冲电流的试样相比,先共析铁素体的含量降低,尺寸...
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