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某锅炉厂生产的锅炉汽包,在冬季制造过程中发生破裂,汽包材料为 SA299钢,对断口的初步分析发现为脆性解理断口,据此认为是冷脆破坏。本文依据冷脆特征温度 Tc 的概念对 SA299钢的冷脆行为进行了细致的分析。
A boiler drum produced by a boiler plant broke during the winter manufacturing process. The steam drum material was SA299 steel. A preliminary analysis of the fracture revealed a brittle cleavage fracture, which was considered to be cold and brittle failure. Based on the concept of cold brittle temperature Tc, the cold brittle behavior of SA299 steel is analyzed in detail.