| 高强度厚钢板止裂韧性K_(ca)与常规力学性能的相关性分析 |
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| 引用本文： | 薛钢,宫旭辉,沈传钊,李冲,高珍鹏. 高强度厚钢板止裂韧性K_(ca)与常规力学性能的相关性分析[J]. 材料开发与应用, 2018, 0(2): 1-7 |
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| 作者姓名： | 薛钢 宫旭辉 沈传钊 李冲 高珍鹏 |
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| 作者单位： | 中国船舶重工集团公司第七二五研究所,洛阳,471023中国船级社上海规范研究所,上海,200135 |
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| 摘 要： | 统计分析了28组采用TMCP工艺制造的高强度厚钢板-10℃止裂韧性K_(ca)与屈服强度R_(P0.2)、抗拉强度R_m、-40℃冲击功KV_2、-20℃和-40℃动态撕裂能DTE、零塑性转变温度T_(NDT)的相关性规律,结果表明,-10℃止裂韧性K_(ca)与心部抗拉强度R_m和侧面零塑性转变温度T_(NDT)的相关度较高,随着心部抗拉强度R_m的增高和侧面零塑性转变温度T_(NDT)的降低,-10℃止裂韧性K_(ca)增大;在此基础上建立了-10℃止裂韧性K_(ca)与心部抗拉强度R_m、侧面零塑性转变温度T_(NDT)和板厚t的相关性方程K_(ca)=13.358·R_m-90.530·T_(NDT)-7.324·t~(1.5)或K_(ca)=13.427·R_m-74.845·T_(NDT)-0.635·t~2。
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| 关 键 词： | 止裂韧性 抗拉强度 零塑性转变温度 板厚 回归方程 crack arrest toughness tensile strength non plastic transition temperature thickness relationship formula |
Relationship Analysis of Crack Arrest Toughness Kca and Conventional Mechanical Properties |
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| XUE Gang,GONG Xuhui,SHEN Chuanzhao,LI Chong,GAO Zhenpeng. Relationship Analysis of Crack Arrest Toughness Kca and Conventional Mechanical Properties[J]. Development and Application of Materials, 2018, 0(2): 1-7 |
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| Authors: | XUE Gang GONG Xuhui SHEN Chuanzhao LI Chong GAO Zhenpeng |
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| Abstract: | Relation between crack arrest toughness Kca at-10 ℃ and yield strength RP0.2,tensile strength Rm,impact toughness KV2 at-40 ℃,dynamic tearing energy DTE at-20 ℃ and-40 ℃ and side-section TNDT was analyzed by 28 troops of test data of high strength heavy plates.Results indicate that crack arrest toughness Kca at-10 ℃ is highly correlative with Rm at center section and side-section TNDT.Kca at-10 ℃ increases with the increasing of Rm at center section and the decreasing of side-section TNDT.The relationship formula of Rm at center section,side-section TNDT,plate thickness t and Kca at-10 ℃ is proposed based on the above results:Kca =13.358 · Rm-90.530 · TNDT-7.324 · t1.5 or Kca =13.427 · Rm-74.845 · TNDT-0.635 · t2. |
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