摘要
对EA4T车轴钢试样分别在奥氏体化保温以及冷却相变过程通入脉冲电流,对不同冷却速度下的组织变化进行研究。试验表明:在脉冲电流的作用下,EA4T钢带状组织能够在一定程度上得到抑制。脉冲电流能促进奥氏体状态下的碳原子及合金元素的扩散,同时也能在相变过程中抑制先共析铁素体的形核,消除带状组织。
Microstructure change of EA4T axle steel heat-treated with and without electropulsing during austenizing heating and cooling was studied.The results indicate that under the action of pulse current,the band structure of the EA4T steel is suppressed to a certain extent.Pulse current can promote the diffusion of carbon atoms and alloying elements in austenite.And the pulse current can also restrain the formation of proeutectoid ferrite,eliminating band structure.
出处
《材料热处理学报》
EI
CAS
CSCD
北大核心
2011年第10期62-66,共5页
Transactions of Materials and Heat Treatment
基金
国家科技支撑计划(2007BAE11B00)
关键词
车轴钢
脉冲电流
带状组织
axle steel
pulse current
band structure
