MnS形态对超高强度钢韧性的影响

钢铁研究学报, 2009, 21(3): 11-14.

MnS形态对超高强度钢韧性的影响

夏志新 ^1, , 叶文冰 ^2, , 杨卓越 ^3, , 陈嘉砚 ^4,

1.中北大学材料科学与工程学院,山西,太原030051;中国钢研科技集团公司结构材料研究所,北京,100081

2.攀钢集团四川长城特殊钢公司技术中心,四川,江油,621701

3.中国钢研科技集团公司结构材料研究所,北京,100081

4.中国钢研科技集团公司结构材料研究所,北京,100081

关键词：超高强度钢 , 复合夹杂物 , 韧性

Effect of Morphology of MnS Inclusions on Toughness of Ultra-High Strength Steel Produced by Different Smelting Processes

利用扫描电镜和能谱分析等检测手段研究了2种不同冶炼工艺生产的G50钢中夹杂物类型和尺寸分布.结果表明:随MnS复合夹杂物中钙含量的降低,Mns变形程度逐渐加重,纵横比随之增大."电弧炉+VOD+真空自耗重熔"冶炼钢的韧性(冲击韧性和断裂韧性)明显得到改善.由于"电弧炉+VOD+真空自耗重熔"冶炼钢中夹杂物的钙含量均较高,纵横比小于"真空感应炉熔炼+真空白耗重熔"冶炼钢,因而有利于改善G50超高强度钢的韧性.

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材料期刊网

MnS形态对超高强度钢韧性的影响

Effect of Morphology of MnS Inclusions on Toughness of Ultra-High Strength Steel Produced by Different Smelting Processes

参考文献