中低碳钢氢鼓泡形成机理分析.pdfVIP

： doi 10.3969/j.i ssn.1006-110X.2014.02.029 中低碳钢氢鼓泡形成机理分析 张志远，穆瑞三，叶小军，周 伟， 宁玫，程 林，赵游云 （天津钢管集团股份有限公司技术中心，天津300301 ） [摘 要] 对中低碳钢氢致开裂（HIC ）试验氢鼓泡进行了解剖分析。结果表明：氢鼓泡中均发现有夹杂物，包括A 类 硫化锰类夹杂、B 类氧化铝类夹杂和大型的D 类球形夹杂，所以氢鼓泡成因与A 、B、D 类夹杂均有关系。普通碳钢氢 鼓泡中有片状硫化锰夹杂，而低硫钢氢鼓泡中主要是氧化铝类夹杂。氢鼓泡的大小与夹杂的大小和聚集程度有关。 [关键词] 氢鼓泡；氢致开裂；低碳钢；夹杂物 Analysis on Formation Mechanism of Hydrogen Blister in Medium and Low Carbon Steel ZHA NG Zhi-yuan,MU Rui-san,Y E X iao-j un,ZHOU W e i, NING Mei, CHENG Lin and ZHA O Y ou-yun (Technology Center of Tianj in Pipe [Group] Corporation, Tianj in 300301, China) Abstract Thorough analysis was carried on hydrogen blister formation at Hydrogen Induced Cracking (HIC) test for medium and low carbon steel. Results showed that in every hydrogen blister there were inclusions, including manganese sulfide of type A, aluminum oxide of type B and big spherical inclusion of type D. Therefore, the formation of hydrogen blister was related to inclusions of types A, B and D. There were lamellar manganese sulfide inclusions in the hydrogen blister of common carbon steel, while aluminum oxide inclusions in that of low surfer steel. The size of hydrogen blister was related to inclusion size and aggregation. Key words hydrogen blister; HIC; low carbon steel; inclusion 1 引言 险。对于硫化氢环境的低强低硬度（ ） HRC臆22耀26 碳钢和合金钢 受到应力及腐蚀环境共同作 的铁素体珠光体钢，氢鼓泡和HIC 是其主要的破坏 用时发生的断裂是最危险的破坏形式之一，可称之 [6] ， 类型 。因此，分析氢鼓泡成因进而优化生产工艺 为 含有硫化氢环境下的应力腐蚀断裂，通常发生 减少乃至避免出现氢鼓泡缺陷具有现实意义。 油气田