DIE STEEL 4Х4Н5М4Ф2 (WITHOUT FORGING TREATMENT) FOR HOT DEFORMATION OF ALUMINUM ALLOY
نویسندگان
چکیده
Purpose. Production of steel with controlled austenitic transformation during operation the 4Х4Н5М4Ф2 grade (without forging treatment) using technology electroslag remelting and establishing optimal modes heat treatment (annealing, quenching tempering). tools (matrices) from for hot deformation aluminum alloy at operating temperatures below critical point A1.
 Research methods. Metallographic analysis experimental die steels forged 4Х5МФ1С: study metal structure; determination specific resistance; tensile strength; hardness impact strength.
 Results. The results research on optimization (quenching tempering) are given. Adjusted chemical composition (4Х4Н5М4Ф2) optimized mode steel, which allowed to increase resistance up a temperature 650 °С. tempering (475±25 °С) irreversible temper brittleness occurs is established. Experimental industrial tests AK7ч presented. It shown that compared H13 (an analogue 4Х5МФ1С), used one Chinese enterprises, has practically same .
 Scientific novelty. In process partial recrystallization (incomplete annealing 750±20 °C) treatment), spheroidized carbide component formed, leads an improvement in mechanical processing workpiece manufacture matrices.
 Practical value. possibility adjustable wide range deformation: copper-nickel (at above A3) A1) increased service life 4Х5МФ1С.
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ژورنال
عنوان ژورنال: Novì materìali ì tehnologìï v metalurgìï ta mašinobuduvannì
سال: 2023
ISSN: ['1607-6885']
DOI: https://doi.org/10.15588/1607-6885-2022-2-8