中洛线断裂管材的机械性能分析  

Mechanical Properties Analysis of Pipe Fractured in Zhongyuan Oilfield-Luoyang Petrochemical Plant Pipeline

作　　者：李静[1] 岑山[1] 巴文军[1] 赵元林[2] 帅健[3] 

机构地区：[1]中国石化管道储运公司新乡输油处 [2]中国石化管道储运公司黄岛油库 [3]中国石油大学(北京)

出　　处：《油气储运》2009年第4期63-66,共4页Oil & Gas Storage and Transportation

摘　　要：中洛线濮阳出站处管道发生断裂,为此进行了系列机械性能测试。单向拉伸试验结果表明,尽管管材的屈服与强度极限数值较高,但塑性较差,在应力-应变曲线中并没有表现出明显的屈服阶段,焊缝处材料明显呈现脆性。管材的冲击韧性最大值仅为50.30J/cm2,韧性较差;焊缝处韧脆转变温度在15～20℃之间,明显偏高;试样的断口和金相分析等均表明焊缝处管材具有很高的脆性。A series of mechanical property tests were performed for the pipe from Zhongyuan Oilfield to Luoyang Petrochemical Plant Pipeline.Tensile tests show that the pipe material has a high yield limit and strength limit,but poor plasticity.These stress-strain curves do not have an obvious yield stage.Weld materials behave high brittleness.The pipe impact toughness is low with the maximum value of 50.30 J/cm2.The ductile-brittle transition temperature at weld materials is between 15 and 20'C,higher than normal.Furthermore,fracture and metallographic analysis of weld specimens exhibit clearly brittle features.

关 键 词：原油管道 管材 断裂 机械性能 分析 

分 类 号：TG113.254[金属学及工艺—物理冶金] TS101.923[金属学及工艺—金属学]