X80埋弧焊管焊接接头冲击韧性数值研究  

Numerical Simulation of Welding Joints Impact Toughness for X80 Submerged Arc Welded Pipe

作　　者：张建勋[1] 杨中娜[1] 熊庆人[1,2] 郑莉[1] 

机构地区：[1]西安交通大学金属材料国家重点实验室,西安710049 [2]中国石油天然气集团公司管材研究所,西安710065

出　　处：《焊管》2011年第4期12-16,22,共6页Welded Pipe and Tube

摘　　要：针对管线钢埋弧焊焊接接头的冲击韧性问题,采用CCT图和温度场结合法预测了埋弧焊接HAZ组织,结合显微硬度确定了HAZ力学性能,利用有限元法ANSYS/LS-DYNA显式动力学分析软件,建立了冲击试验过程的实体模型,并对焊接接头动态冲击过程进行了数值模拟。分别计算了缺口位于焊缝、HAZ以及母材时的冲击过程中的吸收功,分析了冲击韧性的变化。Aim at impact toughness of submerged arc welded pipe welding joints,it predicted HAZ structure of submerged arc welding through CCT chart and temperature field,determined HAZ mechanical property combined with microhardness,established entity model in impact test by using finite element dynamic analysis software ANSYS/LS-DYNA,and carried out numerical simulation for dynamic impact procedure of welding joints.The absorbed energies which groove located in weld,HAZ and base metal were calculated separately.It also analyzed the variation of impact toughness.

关 键 词：X80管线钢 螺旋埋弧焊管 焊接接头 动态冲击 数值模拟 

分 类 号：TG113.254[金属学及工艺—物理冶金]