摘要
研究了电脉冲(ECP)处理对亚共晶铁碳合金珠光体组织的影响。结果表明,亚共晶铁碳合金经ECP处理后,促进了石墨的生成,增加了铁素体的形核率,最终导致组织中铁素体相对含量增加,珠光体相对含量相应降低;ECP处理同样增加了共析转变的有效驱动力,且随着输出电压的升高,珠光体内的渗碳体层片逐渐变短、变薄,珠光体的显微硬度逐渐增加。
Effect of electric current pulse ( ECP ) on pearlite of hypoeutectic Fe-C alloys was investigated .The results show that ECP treatment can promote the formation of graphite in hypoeutectic Fe-C alloys, and the nucleation rate of ferrite increases which result in that the relative amount of ferrite increases and the relative amount of pearlite decreases .ECP treatment can also increase the effective drive force of eutectoid transition.With the increasing of output voltage , the cementite lamella of pearlite becomes shorter and thinner and the microhardness of pearlite increases .
出处
《金属热处理》
CAS
CSCD
北大核心
2014年第6期46-49,共4页
Heat Treatment of Metals
基金
国家自然科学基金面上项目(51171073)
高等学校博士学科点专项科研基金(20115314120002)
关键词
亚共晶铁碳合金
电脉冲
珠光体
铁素体
hypoeutectic Fe-C alloys
electric current pulse(ECP)
pearlite
ferrite
