摘要
借助透射电镜（ＴＥＭ）研究了ＴＡ２－Ａ３爆炸复合界面结合层的微观结构．结果表明：该层的“冶金结合”是通过局部熔化和扩散共同作用实现的，宽约为几十微米．由宽度在１００ｎｍ内变化的；由熔区和非熔区组成的界面层及Ａ３侧的热影响区、以显微带为特征的形变区、以及ＴＡ２侧的绝热剪切带（ＡＳＢ）组成．ＡＳＢ内的晶粒细比成１００ｎｍ内的等轴晶．且其中位错密度很低．ＡＳＢ内没有发生ｈｃｐ→ｂｃｃ转变亦无熔化迹象．界面层的熔区内为非晶和纳米级微晶；
he TA2/A3 explosive cladding interface layers have been studied by TEM technique. The results show that the 'metallurgical bond' of the explosive-cladding is achieved by local melting and diffusion at the contacted surface. There are microcrystals and amorphous in the molten region due to the rapid cooling rate. There are heat affected and deformed regions on the side of A3. On the side of TA2. there are adiabatic shear bands(ASB). Very small equiaxed grains(- 0. 1μm) with a low dislcation density were observed in ASB. Farther away from the interface in A3 and TA2 the deformation mechanism was reflected in twins, and the twin density in A3 is much low than that in TA2.
出处
《材料研究学报》
EI
CAS
CSCD
1995年第2期186-189,共4页
Chinese Journal of Materials Research
关键词
爆炸复合
界面结合层
非晶
钛
低碳钢
explosive cladding, bonding interface layer, amorphous, adiabatic shear band(ASB)
