止裂厚钢板拉伸性能表征参量与无塑性转变温度的相关性分析

基金项目:

国家重点研发计划项目（2016YFB0300701）；鞍钢海洋装备用金属材料及其应用国家重点实验室2018年开放课题（SKLMEA-K201805）

详细信息

Analysis on Relationship Between Tensile Property Parameters and Nil-ductility Transition Temperature of Crack Arrest Thick Steel Plate

1. Luoyang Ship Material Research Institute, Luoyang 471023, China;
2. Henan Key Laboratory of Technology and Application of Structural Materials for Ships and Marine Equipment, Luoyang 471023, China

摘要: 统计分析了54组止裂厚钢板屈服强度R_p0.2、拉抻强度R_m、伸长率A、断面收缩率Z、屈强比R_p0.2/R_m和侧面落锤无塑性转变温度T_NDT的相关性规律，结果表明：止裂厚钢板屈强比越低，钢板的均匀塑性变形能力越好；止裂厚钢板均匀塑性变形能力越好，无塑性转变温度越低，钢板的止裂性能也相对越好。
- 屈强比 /
- 无塑性转变温度 /
- 均匀塑性变形 /
- 止裂韧性
Abstract: Fifty four troops of of yield strength R_p0.2, tensile strength R_m, elongation A, reduction of area Z, yield ratio R_p0.2/R_m and nil-ductility transition temperature T_NDT of crack arrest thick steel plate were analyzed.Results indicate uniform plastic deformation decreases with the increasing of yield ratio and that the nil-ductility transition temperature T_NDT decreases with the increasing of uniform plastic deformation.
- yield ratio /
- nil-ductility transition temperature /
- uniform plastic deformation /
- arrest toughness