摘要
为充分利用TiC颗粒提高钢材的耐磨损性能,采用中碳+低锰+高硅+高铝+高钛成分体系,通过精准控制组织相比例,TiC颗粒尺寸及其体积分数,研究了卷取温度对颗粒增强型NM300TP耐磨钢性能的影响。结果表明:当卷取温度为665℃、615℃、545℃和480℃时,试验钢组织分别为PF+DP+GB、PF+GB+M/A、GB+M/A和GB+M/A。随着卷取温度的降低,试验钢抗拉强度先增后降,延伸率、硬度和冲击性能呈现增加趋势,卷取温度为480℃和545℃时,试验钢各性能均满足技术要求,且钢中含有较多M或M/A组织的产品具有更优的耐磨性能。当卷取温度较低时,试验钢中含有大量微米、亚微米和纳米级TiC颗粒析出,具有较强的抗变形和耐磨损的性能,使得试验钢在强度较低的情况下表现出与马氏体耐磨钢相同的耐磨损性能。
EFFECT OF COLD ROLLING REDUCTION ON STRUCTURE AND TEXTURE OF 300WG STEELXie Fang;Chen Jianhua;Yuan Wu;Xinyu Iron and Steel Group Co.,Ltd.;By conducting metallographic tests on annealed 300WG steel with different cold rolling reduction rates,the influence of cold rolling reduction rates on the microstructure performance and internal texture of 300WG steel was analyzed and studied.The experimental results show that as the cold rolling reduction rate continues to increase,the ferrite grain structure after cold rolling is continuously elongated along the rolling direction under the action of rolling force,and continuously compressed along the plate thickness direction.The grain size continues to increase,and the grain dislocation density also increases,the Vickers hardness of the steel plate increases sharply when the cold rolling reduction rate is increased from 0 to 25%,the Vickers hardness of the steel plate does not change significantly when the cold rolling reduction rate is increased from 25%to 75%,the{111}<112>and{111}<110>fabric of cold rolled 300 WG steel onγfiber fabric are strengthened.
作者
万国喜
黄重
武会宾
何晓波
刘艳红
Wan Guoxi;Huang Zhong;Wu Huibin;He Xiaobo;Liu Yanhong(Henan Iron and Steel Group Co.,Ltd;Henan Jinye New Material Technology Co.,Ltd;University of Science and Technology Beijing)
出处
《河南冶金》
2024年第3期1-6,14,共7页
Henan Metallurgy
关键词
颗粒增强型耐磨钢
卷取温度
力学性能
耐磨性能
TIC
Particle reinforced wear-resistant steel
Coiling temperature
Mechanical properties
Wear resistance
TiC
