CAJ | 학술논문

针对低碳钢，测试了不同预变形量下的烘烤硬化性能；采用电子背散射衍射及电子探针技术分别分析了低碳烘烤硬化钢板的晶界特征和晶界元素偏聚。结果表明，随着预变形量不断增加，烘烤硬化值不断增大；钢中小角度晶界不断增多，但总体上大角度晶界还是占主导地位。退火态和不同预变形量下的烘烤态均存在碳元素在晶界处偏聚的现象，锰元素没有晶界偏聚。
침대저탄강，측시료불동예변형량하적홍고경화성능；채용전자배산사연사급전자탐침기술분별분석료저탄홍고경화강판적정계특정화정계원소편취。결과표명，수착예변형량불단증가，홍고경화치불단증대；강중소각도정계불단증다，단총체상대각도정계환시점주도지위。퇴화태화불동예변형량하적홍고태균존재탄원소재정계처편취적현상，맹원소몰유정계편취。
The effect of different pre-deformation on Bake Hardening property was tested for low carbon steel. By electron back scattering diffraction technology and electronic probe technology grain boundary character and grain boundary segregation were analyzed of low carbon bake hardening steel under different pre-deforma-tion conditions. Experimental results show that,with the increase of pre-deformation,bake hardening value and the quantity of small angle grain boundaries increase,overall,the quantity of high angle grain boundaries is abundant;Carbon atoms segregated to grain boundaries increase.