Ultrahigh Cooling Rates at the Interface of Explosively Welded Materials and Their Effect on the Formation of the Structure of Mixing Zones
| Autor: | Yu. N. Malyutina, Ivan A. Bataev, Ivanna D. Kuchumova, Daria V. Lazurenko, Anatoly A. Bataev, O. E. Mats, A. A. Nikulina |
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| Rok vydání: | 2018 |
| Předmět: |
010302 applied physics
Range (particle radiation) Amorphous metal Materials science General Chemical Engineering Mixing (process engineering) General Physics and Astronomy Energy Engineering and Power Technology 02 engineering and technology General Chemistry Welding 021001 nanoscience & nanotechnology 01 natural sciences law.invention Metal Fuel Technology Planar law visual_art Metastability 0103 physical sciences visual_art.visual_art_medium Composite material Crystallization 0210 nano-technology |
| Zdroj: | Combustion, Explosion, and Shock Waves. 54:238-245 |
| ISSN: | 1573-8345 0010-5082 |
| DOI: | 10.1134/s0010508218020132 |
| Popis: | Explosively welded metal plates are characterized by the formation of local microvolumes at the interlayer boundaries within which there is mixing of interacting materials. These microvolumes can be arranged discretely along wavy boundaries or continuously in the form of thin interlayers along planar boundaries. Based on the results of many published works, it has been shown that the material is melted in these zones, and its subsequent solidification occurs at a high rate leading to the formation of metastable phases. In this paper, the formation of metastable phases in steel–steel, Ta–steel, Nb–Al, and Zr–Cu joints is analyzed. The cooling rates of these materials in the mixing zones is estimated. Calculations show that the cooling rate of the melts formed in the weld zones of the investigated composites is in the range 103–106 K/s. Cooling of mixing zones at such high rates results in the formation of metastable structures. In some cases, the crystallization of materials is suppressed and metallic glasses and quasicrystalline phases are formed in the melt zones. |
| Databáze: | OpenAIRE |
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