A131GrAH36船板钢拉伸断口分层原因及改善措施  

Causes of Laminated Fracture under Tensile Test for A131GrAH36 Steel Plate and Improving Measures

作　　者：肖丰强[1] 唐国红[1] 侯登义[1] 

机构地区：[1]济钢集团有限公司技术中心,山东济南250101

出　　处：《物理测试》2009年第2期51-55,57,共6页Physics Examination and Testing

摘　　要：借助金相显微镜、扫描电镜及能谱仪对A131GrAH36高强度船板钢拉伸断口进行检测分析,通过内部机理和外部诱因两方面的探讨,指出了拉伸断口分层与夹杂物、中心偏析等因素密切相关,并提出了相应的改善措施,拉伸试样断口分层率显著降低,取得明显效果。The laminated fracture of A131GrAH36 steel is observed, detected and analyzed by metalloscope, SEM and EDS. By investigating into mechanism of fracture and effective factors, the results show that the laminated fracture occurred in the middle of the plate is related to inclusions and centre segregation. The improving measures are put forward. Therefor the ratio of laminated fracture is obviously decreade and the result is satisfactory.

关 键 词：断口分层 夹杂物 中心偏析 

分 类 号：TG142.15[一般工业技术—材料科学与工程]