空分设备冷箱用钢-铝接头性能分析  

Performance analysis of steel-aluminum joint for cold box of air separation equipment

作　　者：尚稚轩 李南南 朱磊 SHANG Zhixuan;LI Nannan;ZHU Lei(Xi’an Tianli Metal Composite Material Co.,Ltd.,Xi’an 710201,China;National and Local Joint Laminated Metal Composite Engineering Research Center,Xi’an 710201,China)

机构地区：[1]西安天力金属复合材料股份有限公司,西安710201 [2]国家地方联合层状金属复合材料工程研究中心,西安710201

出　　处：《兵器装备工程学报》2023年第S02期148-152,共5页Journal of Ordnance Equipment Engineering

摘　　要：以采用爆炸复合工艺制备的国产钢-铝接头为研究对象,通过金相分析、扫描电镜及能谱分析知道了铝合金5083含有活泼元素Mg,爆炸复合后在结合界面处产生了少量脆性相MgO;1060/TA1界面处存在明显的塑性变形,对母材具有一定的强化作用;5083/1060界面理想波纹尺寸为:λ≈1600μm、A≈640μm。漏率及水压爆破试验表明:脆性相MgO内产生少量裂纹不影响钢-铝接头可靠性,国产钢-铝接头漏率<1×10^(-8)Pa·m^(3)/s且爆破压力为设计压力的4倍以上。With the implementation of the national energy conservation and emission reduction policy,the air separation industry has ushered in major development opportunities.As a key component in the cold box of air separation equipment,the demand for this product in the domestic air separation industry has long relied on imports.In order to adapt to the development of domestic air separation industry,it is of great significance to carry out related research on this product.In this study,the domestic steel-aluminum joint prepared by explosive composite process was taken as the research object.Through metallographic analysis,scanning electron microscopy and energy spectrum analysis,the conclusion was drawn:1)Aluminum alloy 5083 contains active element Mg,and a small amount of brittle phase MgO is produced at the bonding interface after explosive composite;2)There is obvious plastic deformation at the 1060/TA1 interface,which has a certain strengthening effect on the base metal;3)The ideal ripple size of the 5083/1060 interface is:λ≈1600μm,A≈640μm.The leakage rate and water pressure blasting test show that a small number of cracks in the brittle phase MgO will not affect the reliability of the steel-aluminum joint.The leakage rate of the domestic steel-aluminum joint is less than 1×10^(-8)Pa·m^(3)/s,and the bursting pressure is more than 4 times the design pressure.

关 键 词：空分 钢-铝接头 爆炸复合 界面 

分 类 号：TG456[金属学及工艺—焊接]