Effect of Ultra-Fast Cooling Process on Microstructure and Mechanical Properties for 36kg High Strength Ship Plate

摘要：

　　According to the dynamic continuous cooling transformation (CCT) diagrams of 36kg ship plate steel,the effects of cooling rate after deformation on austenite microstructure was studied by means of the thermal simulation experiment,and different cooling processes were applied in the laboratory rolling test.The results show that: the ferrite transformation temperature decreases with the increase of cooling rate during continuous cooling process,and the ferrite will disappear when the cooling rate is greater than 20℃/s; the austenite grain size decreases as the cooling rate increases before transformation,and the deformed austenite can be kept to the moment when austenite-to-ferrite transformation happens under high cooling rate and so the ferrite grain can be better refined; compared with accelerated cooling process,the ultra-fast cooling can gain better refined microstructure and mechanical properties.

关键词： transformation ultra-fast cooling microstructure mechanical properties

作者: Yang Hao Zhou Xiao-guang Liu Zhen-yu Wang Guo-dong

作者单位: State Key Laboratory of Rolling and Automation,Northeastern University,Shenyang 110819,China

会议类型: 国际会议

会议名称: Asia Steel International conference 2012(第五届亚洲钢铁大会)

会议地点: 北京

会议语种:英文

页码: 1-4

在线出版日期: 2012-09-23（万方平台首次上网日期，不代表论文的发表时间）