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| 轧制和退火对爆炸焊接Ag/Ti复合板组织和力学性能的影响 |
| Effects of rolling and annealing on microstructures and mechanical properties of explosion welded Ag/Ti composite plate |
| Received:February 10, 2023 |
| DOI： |
| 中文关键词: Ag/Ti复合板 爆炸焊接 轧制 退火 |
| 英文关键词: Ag/Ti composite plate explosive welding rolling annealing |
| 基金项目:陕西省重点研发计划工业领域项目(2022GY-393) |
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| 中文摘要: |
| 采用爆炸-轧制复合法制备了Ag/Ti复合板材，研究了轧制和退火对复合板材力学性能和结合界面的显微组织的影响。结果表明，爆炸焊接Ag/Ti复合材界面出现典型的周期性波状组织，波峰高约80 μm，相邻波峰间距约为300 μm。爆炸焊接复合板经轧制后，波状复合界面由于发生较大的塑性变形转变为平直界面，且界面上形成不连续的AgTi扩散层。经后续的退火处理后，界面上形成厚度约为20 μm的连续均匀的扩散层。轧制态的Ag/Ti复合板经退火处理后，板材的强度明显降低，但是其塑性却有明显的增加，其屈服强度、抗拉强度和伸长率分别为358 MPa、464 MPa和50.5%。断口分析表明，轧制态和退火态复合板材断口中均表现出明显的韧性断裂特征，但退火态复合板断口中韧窝尺寸更大更深，表明其具有更好的塑性。 |
| 英文摘要: |
| Ag/Ti composite plate was fabricated by explosion-rolling technology in this work. The effects of rolling and annealing on the properties of the composite plate and the microstructure of the bonding interface were studied. The results show that the bonding interface of explosion welded Ag/Ti composite plate has typical wavy structure with an average wavelength of 300 μm and a height of 80 μm. The wavy interface changed into straight interface basically after rolling, due to the large plastic deformation. In addition, a discontinuous AgTi interfacial diffusion layer was developed. After a subsequent annealing treatment, a continuous and uniform diffusion layer with a thickness of about 20 μm was formed at the interface. The strength of the rolled Ag/Ti composite plate was significantly reduced after the annealing treatment, but its plasticity increased significantly, with the yield strength, ultimate tensile strength and elongation being 358 MPa, 464 MPa and 50.5%, respectively. Fracture analysis shows that both the rolled and annealed composite plates exhibited significant ductile failure characteristics, but the latter had a larger and deeper dimples in the fracture, indicating better plasticity. |
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