Answers are grounded in this paper and cite their sources.
Impact toughness of the base metal and welds of the pipe steel of the X70 strength class was investigated and high values were defined. It was particularly important that impact toughness of the weld at temperatures of -40 °C and -20 °C was identical to that of the base material. For specimens W1 and W2 cut from the heat zone of weld by different metods (milling (W1) and plasma method (W2)) at a temperature of -40 °C, it was 1.14 and 1.5 times lower than that of the base metal, respectively. The method of cutting the specimens (milling, or plasma cutting) did not affect the impact toughness of the pipe steel and its welds in the investigated temperature range.
No takes yet. Share an insight, caveat, or question.
Kryzhanivs’kyy et al. (2019) studied this question.
Synapse has enriched 5 related papers. Consider them for comparative context: