飞机高强钢拼焊板高温拉伸试验及高温本构模型研究  

High-temperature tensile test and high-temperature constitutive model of aircraft high-strength steel tailored blank

作　　者：赵凯 ZHAO Kai(Xi'an Aeronautical Polytechnic Institute,Xi'an 710089,Shaanxi,China)

机构地区：[1]西安航空职业技术学院,陕西西安710089

出　　处：《模具技术》2024年第6期73-79,共7页Die and Mould Technology

基　　金：2023年度陕西省教育厅科研计划项目“航空发动机涡轮叶片热障涂层气膜孔光整”(编号:23JP076)。

摘　　要：为深入了解B340LA低碳合金钢、B1500HS冷轧钢以及B340LA/B1500HS高强钢拼焊板等飞机制造常用钢材的热变形特性,提升相关企业对于高强度钢的加工能力,对各种高强度钢板料进行拉伸试验,进而获得板料的应力-应变关系数据。在此基础上,采用经过改进的Johnson-Cook模型对板料的应力-应变关系数据进行拟合处理,取得了较为理想的拟合效果,决定系数R 2接近于1,代表该模型的拟合结果具有良好的可信度。最后基于所得到的拟合结果建立了B340LA低碳合金钢、B1500HS冷轧钢以及B340LA/B1500HS高强钢拼焊板三种高强度钢板料的本构模型。In order to understand the thermal deformation characteristics of B340LA low-carbon alloy steel,B1500HS cold-rolled steel and B340LA/B1500HS high-strength steel tailored blank and other commonly used steels in aircraft manufacturing,and improve the processing capacity of related enterprises for high-strength steel.The tensile test of various high-strength steel sheets was carried out to obtain the stress-strain relationship data of the sheets.On this basis,the improved Johnson-Cook model is used to fit the stress-strain relationship data of the sheet,and an ideal fitting effect is obtained,and the coefficient of determination R 2 is close to 1,which means that the fitting results of the model have good reliability.Finally,based on the fitting results,the constitutive models of three high-strength steel sheets,namely B340LA low-carbon alloy steel,B1500HS cold-rolled steel and B340LA/B1500HS high-strength steel tailored blank,were established.

关 键 词：高强度钢 拉伸试验 拟合关系 本构模型 

分 类 号：V252[一般工业技术—材料科学与工程]