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The metallurgical bonding at the interface between the metallic sheets was attributed to localized stick and slip at the interface , dynamic recrystallization and diffusion .
 concept or principle: metallurgical bonding; concept or principle: interface; material: metallic sheets; concept or principle: interface; concept or principle: dynamic; concept or principle: diffusion
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: manufacturing standard, machanical property, manufacturing process, material, engineering feature, process parameter, machine or equipment, application, process characterization, enabling technology, biomedical, concept or principle 
Text: {0} 
Answer:
 concept or principle: metallurgical bonding; concept or principle: interface; material: metallic sheets; concept or principle: interface; concept or principle: dynamic; concept or principle: diffusion