The present invention provides a lightweight steel material comprising 0.20 to 0.25 wt% of C, less than or equal to 0.40 wt% of Si, 1.0 to 2.0 wt% of Mn, less than or equal to 0.025 wt% of P, less than or equal to 0.01 wt% of S, less than or equal to 0.35 wt% of Cr, 0.02 to 0.06 wt% of Alt, less than or equal to 0.005 wt% of B, less than or equal to 0.08 wt% of Ti, less than or equal to 0.05 wt% of V, and the balance being Fe and unavoidable impurities. The alloy comprises, by weight, less than or equal to 0.07% of Nb, less than or equal to 0.35% of Mo, less than or equal to 0.05% of other impurity elements, and the balance Fe. The light-weight steel provided by the invention has excellent fatigue resistance while obtaining ultrahigh strength performance and realizing excellent light weight.

    本发明提供了一种轻量化钢材,其包括:0.20~0.25重量%的C,小于或等于0.40重量%的Si,1.0~2.0重量%的Mn,小于或等于0.025重量%的P,小于或等于0.01重量%的S,小于或等于0.35重量%的Cr,0.02~0.06重量%的Alt,小于或等于0.005重量%的B,小于或等于0.08重量%的Ti,小于或等于0.05重量%的V,小于或等于0.07重量%的Nb,小于或等于0.35重量%的Mo,小于或等于0.05重量%的其他杂质元素和余量的Fe。本发明提供的轻量化钢材在获得超高强性能实现优异轻量化的同时,具有良好的抗疲劳性能。


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    Title :

    Lightweight steel and preparation method and application thereof


    Additional title:

    一种轻量化钢材及其制备方法与应用


    Contributors:
    YAN CHAOFENG (author) / ZHANG ZEXI (author) / KANG XIAOFENG (author) / ZHAO WEIFENG (author) / LI YONG (author) / NIU JIE (author) / CAO LINTAO (author)

    Publication date :

    2024-07-12


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    C22C Legierungen , ALLOYS / B23P Sonstige Metallbearbeitung , OTHER WORKING OF METAL / C21D Veränderung der physikalischen Struktur von Eisenmetallen , MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS / B62D MOTOR VEHICLES , Motorfahrzeuge



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