摘要
统计分析了26组采用TMCP工艺制造的高强度厚钢板-10℃止裂韧性(K_(ca)^(-10℃))与碳当量(C_(eq))、晶粒度(GS_)、磷含量(w(P))和板厚(t)的相关性规律,结果表明,提高碳当量、增大晶粒度、降低杂质元素磷的含量、减小板厚均有利于止裂韧性的提高,在此基础上建立了止裂韧性与碳当量、晶粒度、磷含量和板厚的回归方程:K_(ca)^(-10℃)=23 443.45·C_(ep)+276.51·G_S-0.77·w(P)·t^3-2.75·t^(1.5)。
Relations between crack arrest toughness K（ca） at-10 ℃ and carborn equivalent carbon equivalent,grain size GS,phosphorus content w(P） and thickness t of high strength thick plate were analyzed by 26 groups of test data. Results indicate that Ceq,grain size,phosphorus content and crack arrest roughness K（ca） at-10 ℃ are correlative. Kcaat-10 ℃ increases with the increasing of Ceqand grain size and the decreasing of phosphorus content and thickness. The regression equation of carborn equivalent Ceq,grain size GS,phosphorus content w(P）,thickness and K（ca） at-10 ℃ is proposed based on the results above：Kca-10= 23 443. 45·Cep＋ 276. 51·GS-0. 77·w(P） ·t3-2. 75·t1. 5.
作者
薛钢
宫旭辉
XUE Gang;GONG Xuhui(Luoyang Ship Material Research Institute, Luoyang 471023, China)
出处
《材料开发与应用》
CAS
2018年第1期1-6,共6页
Development and Application of Materials
基金
工信部高技术船舶项目(工信部联装[2014]508号)
关键词
止裂韧性
碳当量
晶粒度
磷含量
板厚
回归方程
crack arrest toughness
carborn equivalent
grain size
phosphorus content
thickness
regression equation
