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应用快速加热淬火获得超细化的奥氏体晶粒,是一个迫切的课题。淬火后获得超细化晶粒的钢具有高韧性,可作为高强度钢使用(σ_b=2200～2500兆帕)[1.2]。对于40X 钢制管形零件,为了得到超细化的奥氏体晶粒、在拟定使用电加热淬火
The application of rapid heating quenching to obtain ultrafine austenite grains is an urgent subject. The steel obtained after quenching the superfine grain has high toughness and can be used as high strength steel (σ_b = 2200-2500 MPa) [1.2]. For 40X steel tubular parts, in order to obtain ultrafine austenite grains, the proposed use of electric heating quenching