碳钢爆炸焊界面形貌预测及影响因素分析  

Prediction of carbon steel explosive welding interface morphology and analysis of the influencing factors

作　　者：曾翔宇 李晓杰[2] 金平[1] Zeng Xiangyu;Li Xiaojie;Jin ring(SINOPEC Dalian Research Institute of Petroleum and Petrochemicals,Dalian 116045,Liaoning,China;Dalian University of Technology,Dalian 116024,Liaoning,China)

机构地区：[1]中国石化大连石油化工研究院,辽宁大连116045 [2]大连理工大学,辽宁大连116024

出　　处：《焊接》2022年第4期23-31,共9页Welding & Joining

基　　金：国家自然科学基金资助项目(11672067,11672068)。

摘　　要：为完善爆炸焊波状界面形成机理和特性,并探究界面形貌的量化预测分析方法,文中以流体弹塑性模型为基础,结合多组钢/钢、钛/钢爆炸焊试验结果,定性地分析了基板材料强度与飞板冲击强度对爆炸焊界面形貌的影响,并定量推导了界面形貌的量化计算方法。结果表明,在相同的爆炸焊条件下,界面的波纹形貌受基板材料强度及飞板冲击强度的影响十分明显,且界面比波长随比强度的变化趋势存在明显的流动限拐点;拐点前比波长随比强度的增大而迅速上升,拐点后比波长受比强度的影响较小并随比强度的增大而逐渐平稳。以比强度为主要变量,结合流体弹塑性模型及可焊窗口理论构建的界面形貌预测计算公式在钢/钢、钛/钢材料的爆炸焊试验中均呈现了较好的定性分析效果;以比强度作为分析爆炸焊界面形貌主要特征变量之一的方法在性能与碳钢接近的金属中具有一定的参考价值。In order to improve formation mechanism and characteristics of wavy interface in explosive welding and explore quantitative prediction and analysis method of interface morphology,based on fluid elastic-plastic model and combined with several groups of steel/steel and titanium/steel explosive welding test results in this paper,effect of strength of base plate and impact strength of flyer plate on interface morphology were qualitatively analyzed,and quantitative calculation method of interface morphology was deduced quantitatively.The results showed that interface morphology was significantly affected by strength of base plate material and impact strength of flyer plate under the same welding conditions.Besides,an obvious flow limit point existed in the trend of specific wavelength with specific strength.Specific wavelength increased rapidly with the increase of specific strength before the flow limit point,while specific wavelength was less affected by specific strength and gradually stabilizes with the increase of specific strength after the flow limit point.Predictive formula of interface morphology that was constructed by taking specific strength as the main variable and combining fluid elastoplastic model and weldable window theory showed good qualitative analysis results in the explosive welding tests of steel/steel and titanium/steel materials.The method of taking specific strength as one of the main characteristic variables to analyze interface morphology of explosive welding had a certain reference value in metals with properties similar to carbon steel.

关 键 词：爆炸焊 界面形貌 流体弹塑性模型 比强度 

分 类 号：TG456.6[金属学及工艺—焊接]