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本文以16Mnc钢及其焊接接头深缺口宽板拉伸试验数据与相应批号的Cv试验结果为依据,建立了宽板拉伸试验确定的断裂参数(ε_c)与温度(T)、板厚(t)和反映冶金质量水平的韧性参数(vTr)之间的函数关系,即,ε_c=ε_0EXP[b(T-AvTrE-B t-C)]在此基础上,作者们根据海船在特定工作条件下的使用经验,对船舶结构在更低工作温度下服役的可能性以及对结构用材料的韧性认可方法进行了探讨,并给出海船结构各类构件在不同服役温度和不同板厚条件下的钢级选择的思路及其表述方法。
In this paper, based on the tensile test data of 16Mnc steel and its welded joints, the fracture parameters (ε_c) and temperature (T), plate thickness (t ) And the toughness parameter (vTr) that reflects the quality level of the metallurgy, ie, ε_c = ε_0EXP [b (T-AvTrE-B tC)] Based on this, Using the experience, the possibility of ship structure working at lower working temperature and the method of approving the toughness of structural materials are discussed. The steel grade of all kinds of components of seagoing structure under different service temperatures and different thickness conditions is given. Choice of ideas and methods of expression.