高强度厚板止裂韧性与板厚方向拉伸性能均一性的相关性分析  

Relationship Analysis of Homogeneity of Crack Arrest Property and Tensile Property

作　　者：赵捷[1] 高珍鹏 薛钢[2] 宫旭辉[2] ZHAO Jie;GAO Zhenpeng;XUE Gang;GONG Xuhui(China Classification Society,Beijing 100007,China;Luoyang Ship Material Research Institute,Luoyang 471023,China)

机构地区：[1]中国船级社,北京100007 [2]中国船舶重工集团公司第七二五研究所,河南洛阳471023

出　　处：《材料开发与应用》2018年第6期1-5,共5页Development and Application of Materials

基　　金：国家重点研发计划项目(2016YFB0300701)

摘　　要：统计分析了33组高强度厚板止裂韧性K_(ca)与表面、1/4板厚t、心部三个不同位置拉伸性能表征参量的相关性。结果表明,止裂韧性K_(ca(-10℃))随板厚方向屈服强度变异系数CV_(Rp0.2)的增大呈减小的趋势,建立了止裂韧性K_(ca(-10℃))与屈服强度变异系数CV_(Rp0.2)的相关性方程:K_(ca(-10℃))=-7. 1·Rp0. 2·ln(CV_(Rp0.2))-2. 85×10^(-10)·R_(p0.2)·T_0~2·t^2。Homogeneity relationship of test data of crack arrest toughness Kca(-10℃)and tensile mechanical property of high strength plates of thirty-three groups was analyzed. The results show that arrest toughness decreases with the increasing of variable coefficient of yield strength along the thickness direction;that the relationship formula of Kca(-10℃)and CVRp0.2is proposed based on above results: Kca(-10℃)=-7. 1·Rp0.2·ln(CVRp0.2)-2. 85×10^-10·Rp0.2·T0^2·t^2.

关 键 词：止裂韧性 拉伸性能 均一性 板厚 

分 类 号：TB302[一般工业技术—材料科学与工程]