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李诗韵,李庆生,陈自刚,文金旋.R60702/TA2爆炸焊接复合板微观组织及力学性能研究[J].稀有金属材料与工程(英文),2019,48(6):1734~1741.[Li Shiyun,Li Qingsheng,Chen Zigang and Wen Jinxuan.Microstructure and Mechanical Properties Investigations of Explosively Welded R60702/TA2 Composite Plate[J].Rare Metal Materials and Engineering,2019,48(6):1734~1741.]
Microstructure and Mechanical Properties Investigations of Explosively Welded R60702/TA2 Composite Plate
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Received:January 14, 2018  Revised:June 05, 2019
DOI:
Key words: Zr-Ti composite plate  explosive welding  microstructure  mechanical property
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Author NameAffiliation
Li Shiyun,Li Qingsheng,Chen Zigang and Wen Jinxuan  
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Abstract:
      In this study, R60702 plate and TA2 plate were successfully bonded together by explosive welding. The microstructure, element diffusion, microhardness changes near the bonding interface before and after heat treatment were investigated utilizing optical microscopy (OM), scanning electron microscopy (SEM), energy dispersive spectroscopy (EDS) and microhardness tester. The mechanical properties and fracture morphology in initial and heat treated states were examined as well. The results demonstrate that after explosive welding, the explosively welded bonding interface shows a wavy appearance, obvious deformations and short element diffusion. The microhardness values decrease gradually with the increasing distance from the interface due to the diminishing deformations. After heat treatment, a diffusion layer and recrystallization occur in the microstructure. The overall microhardness values, the tensile strength and shear strength decrease while the plasticity and ductility are improved compared with the initial state. The explosively welded R60702/TA2 composite plate shows a good bending performance after heat treatment.