FIELD: welding. SUBSTANCE: material-indicated is placed among the articles before welding; material-indicator is made in form of a foil. Then welding is carried out, and macrosections are made from produced compounds; inspection of sizes of welded joints is performed. Joint is inspected by method of spectral analysis. Foil is used as material-indicator being almost the same in chemical composition to array of welded material and has at least single doping element. Sizes of welded joint are judged from sizes of zone which has additional doping element. EFFECT: improved precision; widened technological capabilities of the method. 2 dwg, 1 tbl
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