Method for processing advanced high strength steel

• Main Author: SKSZEK TIMOTHY W
• Format: Patent
• Language: Chinese; English
• Published: 31.01.2023
• Subjects: ALLOYS; CHEMISTRY; FERROUS OR NON-FERROUS ALLOYS; 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; TREATMENT OF ALLOYS OR NON-FERROUS METALS

A method of manufacturing an energy absorbing member for a vehicle is provided. The method includes heating a bainite GENS steel material to a temperature above an Ac3 temperature to convert a portion of ferrite and bainite to austenite, the bainite GENS steel material having a microstructure including ferrite and bainite. The method also includes forming the heated steel billet into a component in a temperature controlled steel mold while cooling. During the cooling step, the steel is cooled to a temperature below the Ms temperature to form retained austenite. During the forming step and the cooling step, a portion of the austenite is converted into martensite and bainite. The method may also include heating the component to a temperature above the Ms temperature after the forming step and the cooling step to increase energy absorption characteristics. During a collision event, a strain exerted on the component converts retained austenite present in the component to martensite. 提供了一种制造用于车辆的能量吸收部件的方法。该方法包括将贝氏