冷却工艺对热轧V微合金化钢板组织性能的影响  

Influence of cooling process on microstructure and properties of V-microalloyed hot rolled plate

作　　者：叶晓瑜[1] 雷蕾[1] 张开华[1] 左军[1] 邹小波 

机构地区：[1]攀钢集团研究院有限公司,四川成都611731 [2]攀钢集团西昌钢钒有限公司,四川西昌615000

出　　处：《轧钢》2015年第1期27-30,共4页Steel Rolling

摘　　要：本文通过热模拟试验,分析了不同加热温度对V微合金化510 MPa级钢板原始奥氏体晶粒度的影响规律,并通过工业试验分析了冷却工艺和奥氏体晶粒尺寸对钢板组织和性能的影响。试验结果表明:当加热温度为1 230℃,卷取温度一定时,可以通过控制中间温度得到等轴铁素体或针状铁素体组织。当加热温度为1 160℃时,随着终轧温度、中间温度和卷取温度的变化,钢板组织和性能变化不明显。In this paper, the influence of different heating temperature on original austenite grain size of V mi- cro-alloying 510 MPa grade plate was analyzed though thermal simulation test. Meanwhile, the influence of cool- ing process and the austenite grain size on the microstructures and properties of plate were studied by industrial test. The test results show that when the heating temperature is 1 230 ℃ and coiling temperature is constant, equiaxed ferrite and acicular ferrite structure are obtained by controlling the internal temperature of piece. When the heating tem- perature is 1 160 ℃, the structure and performance of plate do not change obviously with the final roiling tem- perature, internal temperature and coiling temperature change.

关 键 词：冷却工艺 奥氏体晶粒 组织 性能 

分 类 号：TG142.1[一般工业技术—材料科学与工程] TG335[金属学及工艺—金属材料]