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    龚文邦, 陈立亮, 刘瑞祥, 郝静. 高韧性等温淬火球墨铸铁的生产工艺及力学性能[J]. 机械工程材料, 2007, 31(8): 51-53.
    引用本文: 龚文邦, 陈立亮, 刘瑞祥, 郝静. 高韧性等温淬火球墨铸铁的生产工艺及力学性能[J]. 机械工程材料, 2007, 31(8): 51-53.
    shu
    GONG Wen-bang, CHEN Li-liang, LIU Rui-xiang, HAO Jing. Production Technics and Mechanical Properties of High Toughness Austempered Ductile Iron[J]. Materials and Mechanical Engineering, 2007, 31(8): 51-53.
    Citation: GONG Wen-bang, CHEN Li-liang, LIU Rui-xiang, HAO Jing. Production Technics and Mechanical Properties of High Toughness Austempered Ductile Iron[J]. Materials and Mechanical Engineering, 2007, 31(8): 51-53.
    shu

    高韧性等温淬火球墨铸铁的生产工艺及力学性能

    Production Technics and Mechanical Properties of High Toughness Austempered Ductile Iron

      摘要
    • 摘要: 为了稳定某高韧性等温淬火球墨铸铁(ADI)铸件的生产,对其进行了化学成分设计,加入铜、钼、镍等元素进行适当的合金化,铸造球铁毛坯,然后采用在880~920 ℃奥氏体化、350~370 ℃等温淬火工艺进行热处理,对其性能进行了测试.结果表明：试样的抗拉强度在908~1 054 MPa时,平均伸长率达11.8%,冲击功136 J,屈服强度744 MPa,布氏硬度271 HB,其力学性能指标明显优于欧盟ADI标准值;同时发现合金化高韧性ADI铸件的力学性能不遵循欧盟ADI标准EN1564中抗拉强度与伸长率、冲击功、屈服强度、布氏硬度之间的变化规律.

       

      Abstract: In order to produce high toughness austempered ductile iron (ADI),the influence of chemical composition and heat treatment was studied.The chemical composition of the iron was designed by adding Cu,Mo,Ni.The high quality ductile iron roughcast was made by casting.The heat treatment was performed at austenitizing temperatures of 880-920 ℃ and then at austempered temperatures 350-370 ℃.The mechanical properties of the high toughness ADI sample are tensile strength 908-1 054 MPa,average elongation 11.8%,impact resistance 136 J,yield strength 744 MPa,and Brinell hardness 271 HB.The mechanical properties of the produced high toughness ADI excel the European Community ADI standard,but do not comply with the principle of the change between tensile strength and elongation,impact resistance,yield strength,Brinell hardness in ADI Standard EN1564.

       

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