冷轧IF钢再结晶温度测定与组织分析.pdf

第41卷第7期
会属质
Vol 41 No
2016年
HEAT TREATMENT OF META
July 2016
冷轧IF钢再结晶温度测定与组织分析
丁志龙,斯松华,袁晓敏
(1.宝山钢铁股份有限公司梅钢技术中心,江苏南京210039
2.安徽工业大学材料科学与工程学院,安徽马鞍山243002)
摘要:为了研究F钢再结晶退火行为,利用 Gleeble-3500热模拟试验机,模拟了56%床缩比冷轧IF钢在不同温度和不同时间条件
下的退火过程,测定了冷轧IF钢在不同再结晶完成时间下的再结晶完成温度。在热模拟试验的基础上,根据 Arrhenius公式计算了
冷轧IF钢的再结品激活能,建立再结品动力学模型,拟合再结品线性方程。同时通过不同再结品组织分析发现,随着再结晶完成
时间的延长,IF钢的再结晶完成温度降低。
关键词:冷钆钢板;F钢;组织;再结晶温度;退火
中图分类号:TG142.41文献标志码;A文章编号:0254-6051(2016)07-(0164-04
Measurement of recrystallization temperature and analysis of
microstructure of cold rolled I? steel
Ding Zhilong, Si Songhua,, Yuan Xiaomin
(1. Meishan Technology Center of Baoshan Iron and Steel Co, Ltd, Nanjing Jiangsu 210039, China
2. School of Materials Science and Engineering. Anhui University of Technologv. Maanshan Anhui 243002. China
Abstract In order to study the recrystallization behavior of interstitial-free(IF) steel, simulation annealing processes at different annealing
temperatures for different time were carried out on 56% reduction cold rolled IF steel by means of Gleeble-3500 thermal simulation test
machine, and the ending temperatures of recrystallization were measured for different time of static recrystallization completion. Based on the
experiment results, the recrystallization activation energy of IF steels was calculated according to the formula Arrhenius, the recrystallization
kinetics model was built, and the linear equations for recrystallization was fitted. Meanwhile, the ending temperature of recrystallization
decreases with the inerease of recrystallization time by comparing the microstructure of the recrystallized IF steel
Keywords: cold rolled sheet interstitial-flee steel; microstructure; recrystallization temperature; annealing
IF( Interstitial Free)钢,即无间隙原子钢,是目前非时效性、高应变硬化指数(n值)和高塑性应变比(r
广泛使用的深冲钢板之一,具有低屈强比、高伸长率、值)等优异性能而广泛应用于汽车和家电行业。现
代工业化生产的退火方式通常分为単式退火和连续退
收稿日期:2016-02-01
火两种,由于传统式炉退火方式生产效率低、设备投
作者简介:丁志龙(1976一),男,硕士,高级工程师,主要从事泠轧产品
技术研究工作,联系电话:02586366021,F-mail: dingzhong
资多等原因,为了提高生产效率,近年来均采用连续退
baosteel. com
火方式生产深冲F钢产品。冷轧钢板的化学成分、压
doi:10.13251/j.isn.0254-051.2016.07.039
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