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研究了10.9级非调质螺栓用LF10Mn2VTiB钢的成份、性能及强韧化机理。该钢的显微组织由贝氏体、马氏体、奥氏体组成,有利于提高强度和韧性。
The composition, properties and toughening mechanism of LF10Mn2VTiB steel for grade 10.9 non-quenched and tempered bolts were studied. The microstructure of the steel by the bainite, martensite, austenite, help to improve the strength and toughness.