Ni和Mn元素对等温淬火球墨铸铁组织、性能及低温冲击韧性的影响OA
Effects of Ni and Mn Elements on Micro structure,Properties and Low Temperature Impact Toughness of Austempered Ductile Iron
研究了Ni(0～1.0％)和Mn(0.1％～0.3％)元素添加量对等温淬火球墨铸铁(ADI)显微组织和力学性能的影响.结果表明:随着Ni、Mn元素含量的增加,ADI中石墨球平均尺寸减小,球化率先提高后降低,ADI基体组织中奥氏体相的体积分数占比增加.当Ni和Mn元素的添加量分别为0.7％和0.2％时,ADI的综合力学性能最佳,其抗拉强度1 007 MPa,伸长率9.2％,-40℃时夏比冲击实验吸收功达到最大值6.1 J.
In this work,the effects of Ni(0-1.0％)and Mn(0.1％-0.3％)content on the microstructure and mechanical properties of austempered ductile iron(ADI)were studied.The results show that with the increase of Ni and Mn contents,the average size of graphite spheres in ADI decreases,the spheroidization increases first and then decreases,and the volume fraction of austenite phase in ADI matrix increases.When the addition amounts of Ni and Mn elements are 0.7％and 0.2％,respectively,the comprehensive mechanical property of ADI is the best.The tensile strength is 1 007 MPa,the elongation is 9.2％,and the Charpy impact test absorption energy reaches a maximum of 6.1 J at-40℃.
张亚军;周张松;马金哲;李广龙;曲迎东;张伟
江苏宏德特种部件股份有限公司,江苏南通 226352江苏宏德特种部件股份有限公司,江苏南通 226352沈阳工业大学材料科学与工程学院,辽宁沈阳 110870沈阳工业大学材料科学与工程学院,辽宁沈阳 110870沈阳工业大学材料科学与工程学院,辽宁沈阳 110870沈阳工业大学材料科学与工程学院,辽宁沈阳 110870
矿业与冶金
等温淬火球墨铸铁奥氏体力学性能低温冲击韧性
austempered ductile ironaustenitemechanical propertieslow temperature impact toughness
《铸造》 2026 (1)
34-40,7
辽宁省高校基本科研项目(LJ212410142112).
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