Q500钢焊接接头断裂韧性KC与冲击功KV2的相关性统计规律

Q500钢焊接接头断裂韧性K_C与冲击功KV₂的相关性统计规律

详细信息

1. Luoyang Ship Material Research Institute, Luoyang 471023, China;
2. Jiangsu(Shagang) Iron and Steel Research Institute, Zhangjiagang 215625, China

摘要: 采用深缺口宽板拉伸试验测定了4种板厚规格(20 mm、32 mm、40 mm和60 mm)Q500钢焊接接头在不同温度下的断裂韧性KC,对32组断裂韧性值及对应试验温度下的冲击功KV2值的相关性进行了统计分析,结果表明,断裂韧性KC与$K V_2 / \sqrt{t}$近似呈线性关系,其拟合方程为$K_{\mathrm{C}}=80.6+7.23 \cdot K V_2 / \sqrt{t}$ 。
- 断裂韧性 /
- 冲击功 /
- 相关性
Abstract: Deep notch wide plate tensile tests were conducted on four kinds of Q500 steel of different thickness(20 mm,32 mm,40 mm and 60 mm) to get the values of fracture toughness K_C at different temperatures.The relativity of 32 groups of K_C values and their KV₂ at the corresponding test temperatures was analyzed.The results indicate that there is almost linear relationship between fracture toughness K^Cand $K V_2/\sqrt{t}$.The fitting equation is $K_{\mathrm{C}}=80.6+7.23 \cdot K V_2/\sqrt{t}$.
- fracture toughness /
- impact toughness /
- relativity