Process for producing predetermined secondary recrystallization textures in metals

Claim 1

IN THE PROCESS OF CAUSING A PREDETERMINED SECONDARY RECRYSTALLIZATION TEXTURE IN A FIRST SHEET OF A METAL WHICH CAN ATTAIN SUCH SECONDARY RECRYSTALLIZATION TEXTURE BUT HAS NOT BEEN PREVIOUSLY SUBJECTED TO SECONDARY RECRYSTALLIZATION, THE STEPS COMPRISING DISPOSING SAID FIRST METAL SHEET IN INTIMATE CONTACT OF SELECTED PORTION OF ITS SURFACE WITH A SURFACE OF A STIMULATING SHEET OF A METAL WHICH AT THE ANNEALING TEMPERATURES NECESSARY TO EFFECT SECONDARY RECRYSTALLIZATION HAS THE SAME CRYSTAL STRUCTURE AS THE SAID FIRST METAL SHEET AND HAVING A CRYSTAL STRUCTURE THAT WILL YIELD THE PREDETERMINED SECONDARY CRYSTAL STRUCTURE DURING SECONDARY RECRYSTALLIZATION, THE CONTACTING SURFACES OF THE SHEETS BEING CLEAN, THE STIMULATING SHEET READILY ATTAINING A GIVEN SECONDARY RECRYSTALLIZATION TEXTURE AT THE ANNEALING TEMPERATURE, AND HEATING THE ASSEMBLED SHEETS TO ANNEALING TEMPERATURES, AND TEMPERATURE, THE CLEANLINESS, AND THE INTIMATE CONTACT BETWEEN THE SURFACES PRODUCING AT LEAST A PARTIAL WELDING OF THE SURFACES, AND CONTINUING THE ANNEALING UNTIL SECONDARY RECRYSTALLIZATION GRAIN GROWTH OF THE STIMULATING SHEET HAS OCCURRED AND HAS INDUCED A CORRESPONDING SECONDARY RECRYSTALLIZATION TEXTURE IN THE FIRST SHEET.