厚规格700L冲击功影响因素分析  

ANALYSIS OF INFLUENCE FACTOR ABOUT IMPACT ENERGY OF 700L

作　　者：康海军 于立伟 Kang Haijun;Yu Liwei(Technical Center of Ben Gang Group Corporation.,Benxi,117000,China;National and local joint engineering laboratory of advanced automotive steel development and application technology.,Benxi,117000,China)

机构地区：[1]本钢集团有限公司技术中心,本溪117000 [2]先进汽车用钢开发与应用技术国家地方联合工程实验室,本溪117000

出　　处：《冶金信息导刊》2025年第1期27-30,共4页Metallurgical Information Review

摘　　要：通过统计分析冲击功波动情况以及典型试样的金相和断口SEM检测,研究发现,卷取温度对厚度12 mm的700 L冲击功影响十分显著,厚度12 mm的700 L卷取温度大于600℃时,芯部组织中出现少量珠光体,少量芯部珠光体呈现条带状分布,并且先共析铁素体较多,降低了冲击功。TiN尺寸8~12μm时对冲击功有一定影响。Through statistical analysis of the fluctuation of impact energy and metallographic and fracture SEM testing of typical samples,it was found that the coiling temperature has a significant effect on the impact energy of 700 L with a thickness of 12 mm.When the coiling temperature of 700 L with a thickness of 12 mm is greater than 600℃,a small amount of pearlite appears in the core tissue,and the small amount of pearlite in the core presents a strip like distribution.In addition,there is more pearlite in the pre eutectoid structure,which reduces the impact energy.The TiN size of 8μm~12μm has a certain impact on the impact energy.

关 键 词：700 L 卷取温度 冲击功 组织 

分 类 号：TG1[金属学及工艺—金属学]