摘要
为了定量研究服役条件下TA2/Q235爆炸焊接复合板剪切强度与断口分形维数及多重分形谱的关系,明确适合TA2/Q235复合板的最佳分形表征方法,通过热处理模拟服役过程,对服役后的样品开展剪切测试,并引入分形理论对剪切断口进行表征,建立了剪切强度与分形维数及多重分形谱的定量关系。结果表明,200、400和600℃服役后,样品剪切强度与断口多重分形谱宽度负相关;结合残余应力消除及再结晶长大对TA2/Q235爆炸复合板剪切断口形貌影响规律的分析,相比分形维数,多重分形谱能更准确地描述断口力学信息。
In order to quantitatively study the relationship between shear strength and fractal dimension,and multifractal spectrum of TA2/Q235 explosive welded composite plate under service condition,and to identify the best fractal characterization method for TA2/Q235 composite plates,the service processes were simulated by heat treatment,shear experiments of the samples after service were carried out,and the fractal theory was introduced to characterize the shear fracture interface.The purpose of the above study is to establish the relation among shear strength,fractal dimension,and multiple fractal spectrums.The results show that after 200,400 and 600℃service,the shear strength of the sample is negatively correlated with the width of the fracture multiple fractal spectrum.Combining with the analysis of the influence of residual stress elimination and recrystallization growth on shear fracture morphology of TA2/Q235 explosive composite plate,and comparing with fractal dimension,the multifractal spectrum can more accurately describe the mechanics′information of fracture interface.
作者
杨洪波
康佳
郭龙创
姚沛文
刘环
YANG Hong-bo;KANG Jia;GUO Long-chuang;YAO Pei-wen;LIU Huan(School of Metallurgical Engineering,Xi′an University of Architecture and Technology,Xi′an 710055,Shaanxi,China;BaoTi Group,Baoji 721003,Shaanxi,China)
出处
《钢铁》
CAS
CSCD
北大核心
2020年第10期115-119,共5页
Iron and Steel
基金
陕西省工业重点攻关资助项目(Z20190161)
陕西省自然科学基础研究计划资助项目(2016JM5060)。
作者简介
杨洪波(1980-),女,博士,副教授,E-mail:yanghongbo_0413@126.com。
