高温形变对精细钢丝用高碳钢盘条珠光体团尺寸的影响  

Effect of high temperature deformation on pearlite colony size in high carbon steel wire rods for fine wires

作　　者：郭大勇 高航 潘阳 杨迎强 王秉喜 宫文赫 Guo Dayong;Gao Hang;Pan Yang;Yang Yingqiang;Wang Bingxi;Gong Wenhe(State Key Laboratory of Metal Materials for Marine Equipment and Application,Anshan Liaoning 114001,China;Ansteel Iron and Steel Research Institute,Anshan Liaoning 114001,China;Wire Rod Plant of Ansteel,Anshan Liaoning 114001,China)

机构地区：[1]海洋装备用金属材料及其应用国家重点实验室,辽宁鞍山114001 [2]鞍钢集团钢铁研究院,辽宁鞍山114001 [3]鞍钢股份有限公司线材厂,辽宁鞍山114001

出　　处：《金属热处理》2024年第4期146-149,共4页Heat Treatment of Metals

摘　　要：开展了高温形变对高碳钢盘条珠光体组织转变和珠光体团尺寸影响的试验研究。结果表明,高温形变使珠光体的形核率和长大速率增加,奥氏体向珠光体的转变速率加快。高温形变使试样室温珠光体团细化,珠光体团尺寸分布均匀性得到提升。在形变量分别为20%和40%条件下,相变时间为3 s时,试样的珠光体转变量由不形变条件下的11%增加到32%和53%;试样的珠光体团尺寸由不形变条件下的53.2μm降低到37.8μm和23.1μm,标准差由不形变条件下的29.9μm降低到11.8μm和7.9μm。实际生产可以通过提高轧制速度的方法,细化LX80A高碳钢盘条的珠光体团,降低盘条珠光体团尺寸分布标准差,从而提高盘条的拉拔性能。Effect of high temperature deformation on the perlite transformation and pearlite colony size was investigated.The results show that high temperature deformation makes both the nucleation and growth rates of pearlite increase,leading to the increase of phase transformation rate from austenite to pearlite.The deformation on austenite also refines the pearlite colony and makes its distribution evenly.The percentage of transformed pearlite is increased from 11%of the specimen without deformation to 32%and 53%of the specimens with 20%and 40%deformations,respectively,when the pearlite transformation time is 3 s.Pearlite colony size is decreased from 53.2μm of the undeformed specimen to 37.8μm and 23.1μm of the specimens with 20%and 40%deformation,standard deviation is also decreased from 29.9μm of the undeformed specimen to 11.8μm and 7.9μm of the deformed specimens.Higher rolling rate can be applied to the industrial production to decrease the pearlite colony size and its standard deviation of the LX80A high carbon steel wire rod in order to improve its drawability.

关 键 词：高碳钢 高温形变 珠光体团 形核和长大速率 

分 类 号：TG142.1[一般工业技术—材料科学与工程]