爆炸焊接TA2/316L复合板界面的微观分析  

Microanalysis of Explosive-welded TA2/316L Composite Plate Interface

作　　者：李锋[1] 刘航[1] 王自东[1] 韩丽青[1] 

机构地区：[1]北京科技大学材料科学与工程学院,北京100083

出　　处：《热加工工艺》2007年第19期4-6,共3页Hot Working Technology

摘　　要：采用扫描电镜、能谱仪和显微硬度计,对爆炸焊接316L/TA2复合板结合界面的显微组织。成分和显微硬度进行了研究。结果表明,界面呈波状;316L与TA2结合界面之间有一层约为5μm的熔化层;波尾处存在漩涡状熔化块,熔化块内有微裂纹和气孔;界面附近的基体组织产生了剧烈的塑性变形;钛一侧存在绝热剪切带;界面附近的原子存在扩散现象;界面区的显微硬度有显著的提高。The microstructure,ingredient and microhardness of explosive-welded 316L/TA2 composite plate interface were studied by using SEM, EDS and microhardness instrument. The results show that the interface exhibits wave shape.There is a melting zone which is about 5μm between 316L and TA2 join interface,and a whirlpool molten block in the wave tail, there is microcmck and blowhole inside Of the molten piece; the matrix structure the nearby interface generates violent plastic deformation;one side of titanium has adiabatic shear band; the atom nearby the interface has diffusion phenomenon. The microhardness of interface region is improved notably,

关 键 词：爆炸焊接 界面 显微组织 绝热剪切带 显微硬度 

分 类 号：TG456.6[金属学及工艺—焊接] TB331[一般工业技术—材料科学与工程]