爆炸胀接铝/钢复合管的研究  

Aluminum/Steel Composite Pipe by Explosion Expansion

作　　者：余勇[1] 马宏昊[1] 沈兆武[1] 缪广红[1] 李战军[2] 

机构地区：[1]中国科学技术大学近代力学系,安徽合肥230027 [2]广东宏大爆破股份有限公司,广东广州510623

出　　处：《高压物理学报》2016年第2期130-134,共5页Chinese Journal of High Pressure Physics

基　　金：国家自然科学基金(51374189;1174183)

摘　　要：为了得到一种兼具优良力学性能和优异防腐特性的复合管,结合一种高爆速爆炸纤维,利用水作为传压介质,爆炸胀接得到铝/钢复合管。经超声波探伤检测其贴合率达到100%,径向形变率仅为0.65%,弯曲度为0.12%。利用809MTS万能实验机对长径比为1∶1的复合管试样进行了压剪试验,得到了位移-力曲线,计算得到结合强度为3.27MPa,高于建筑和石化行业规定的0.2和0.5MPa最小值。金相实验显示,铝/钢结合界面良好,未出现界面局部过熔现象,发生了铝层与钢层的相互扩散现象。In the present study we fabricated Al/Steel composite by explosive expansion in order to obtain a composite pipe with both good mechanical properties and fine anticorrosion properties.In our fabrication a metal detonation cord with high a detonation velocity was used as the energy source,and the water was used as the pressure medium.The ultrasonic inspection of the fabricated product shows that the binding rate,the radial deformation rate and the bending percentage of the composite pipe are 100%,0.65% and 0.12%respectively.The compression-shear and metallographic tests were also performed to characterize the composite pipe,and the results are as follows：the bonding strength is 3.27 MPa,higher than the officially required minimum value in the construction industry and the petrochemical industry.In addition,the bonding interface is flat and smooth,without evidence of any partial overmelting occurring,and the inter-diffusion between Al and steel is found to have occurred.

关 键 词：爆炸胀接 传压介质 结合强度 微观形貌 

分 类 号：TG113.263[金属学及工艺—物理冶金] O341[金属学及工艺—金属学]