Welding Solutions Advancement of High-Strength Pipeline Steels

在过去的二十年里，不断提高的能源输送速率和将油气勘探扩展到寒冷和严酷的地区，要求指定材料的进步，并使用更高强度的管线钢，如X100和X120级。然而，这些高强度钢的常规弧焊面临着巨大的挑战，如热影响区(HAZ)软化、冷裂纹(HAC)以及缺乏关于它们在严酷北极环境中的腐蚀行为的信息。

During last two decades, continuously increasing energy delivery rates and the expansion of oil and gas exploration to cold and harsh regions have demanded advancements of the assigned materials and employment of higher strength pipeline steels, such as grade X100 and X120. However, there are significant challenges with conventional arc welding of these high-strength steels, such as heat affected zone (HAZ) softening, cold cracking (Hydrogen-assisted cracking (HAC)), and lack of information on their corrosion behavior in harsh arctic environments.