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本文对国内外一些钢材的断裂韧性数据进行了统计分析.结果表明:焊缝热影响区的断裂韧性值随焊接输入热量增大而变化.15MnMoN钢的断裂韧性在转变温度区的分散度大.
The fracture toughness data of some domestic and foreign steel products are statistically analyzed.The results show that the fracture toughness value of HAZ changes with the increase of welding input heat.The fracture toughness of 15MnMoN steel is large in the transition temperature region.