HEAT TREATMENT OF PRECIPITATION HARDENING TYPE STAINLESS STEEL

PROBLEM TO BE SOLVED: To provide a heat treatment method, by which the retained austenite structure in a precipitation hardening type stainless steel can effectively be removed. SOLUTION: After executing a solution treatment to the precipitation hardening type stainless steel, a sub-zero treatment i...

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Hauptverfasser: KUSANO TAISUKE, WATANABE KAZUO, SHIMANUKI MASAKAZU, SAKABE ATSUHIKO
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creator KUSANO TAISUKE
WATANABE KAZUO
SHIMANUKI MASAKAZU
SAKABE ATSUHIKO
description PROBLEM TO BE SOLVED: To provide a heat treatment method, by which the retained austenite structure in a precipitation hardening type stainless steel can effectively be removed. SOLUTION: After executing a solution treatment to the precipitation hardening type stainless steel, a sub-zero treatment is immediately executed, and successively, a precipitation hardening treatment and again, the sub-zero treatment are immediately executed. The retained austenite structure shown again after the precipitation hardening treatment in spite of its removal in the former sub-zero treatment just after the solution treatment, is transformed into martensite structure by the latter sub-zero treatment just after the precipitation hardening treatment to remove the retained austenite structure.
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subjects CHEMISTRY
GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUSMETALS OR ALLOYS
MAKING METAL MALLEABLE BY DECARBURISATION, TEMPERING OR OTHERTREATMENTS
METALLURGY
METALLURGY OF IRON
MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS
title HEAT TREATMENT OF PRECIPITATION HARDENING TYPE STAINLESS STEEL
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