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<p>The study of material deformation during explosive welding has recently attracted increasing attention. Since explosive welding is accompanied by the propagation of shock waves, direct measurement of deformation is impossible. In the present work, a computational and experimental procedure was developed to determine the residual strain of AlMg6-12Cr18Ni10Ti bimetallic plates with interlayers of titanium, vanadium, and molybdenum after explosive welding. The region characterized by the maximum residual strain was calculated. The constructed maps of residual strain distribution showed the varying strain in the plates made of 12Cr18Ni10Ti and AlMg6. Regions exhibiting the maximum residual strain, spalling, and those exhibiting a level of strain that provides layer bonding, as determined by ultrasonic inspection, were identified. The potential for determining the explosive detonation velocity through the measurements of plate elongation after explosive welding was demonstrated. This procedure will enable the determination of the detonation velocity of various explosives without the use of sensors and special equipment, with a reliability of approximately 80–90%. The measurements of elongation, thickness, and microhardness of plates allowed for the optimization of parameters of explosive welding.</p>

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Investigation of residual strain in 12Cr18Ni10Ti-AlMg6 multilayer composites with titanium, vanadium and molybdenum interlayers after explosive welding

  • 期刊论文

  • 发表日期：

    2025年7月17日

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  • Andrey Malakhov,
  • Stepan Seropyan,
  • Nemat Niyozbekov,
  • Igor Denisov,
  • Evgenii Petrov,
  • Gulnaz Saikova

摘要

The study of material deformation during explosive welding has recently attracted increasing attention. Since explosive welding is accompanied by the propagation of shock waves, direct measurement of deformation is impossible. In the present work, a computational and experimental procedure was developed to determine the residual strain of AlMg6-12Cr18Ni10Ti bimetallic plates with interlayers of titanium, vanadium, and molybdenum after explosive welding. The region characterized by the maximum residual strain was calculated. The constructed maps of residual strain distribution showed the varying strain in the plates made of 12Cr18Ni10Ti and AlMg6. Regions exhibiting the maximum residual strain, spalling, and those exhibiting a level of strain that provides layer bonding, as determined by ultrasonic inspection, were identified. The potential for determining the explosive detonation velocity through the measurements of plate elongation after explosive welding was demonstrated. This procedure will enable the determination of the detonation velocity of various explosives without the use of sensors and special equipment, with a reliability of approximately 80–90%. The measurements of elongation, thickness, and microhardness of plates allowed for the optimization of parameters of explosive welding.