| Ca对60CrMnCuV钢中硫的晶界偏聚及冲击韧性的影响 |
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| 引用本文： | 李承基,高德春,曹凤豫,陆丰.Ca对60CrMnCuV钢中硫的晶界偏聚及冲击韧性的影响[J].金属学报,1993,29(12):8-13. |
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| 作者姓名： | 李承基 高德春 曹凤豫 陆丰 |
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| 作者单位： | 北京科技大学金相教研室，北京科技大学，北京科技大学，北京科技大学 教授，北京100083，北京100083，北京100083，北京100083 |
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| 摘 要： | 本文研究了微量Ｃａ对６０ＣｒＭｎＣｕＶ钢回火马氏体室瘟冲击的影响，并用Ａｕｇｅｒ能谱分析了沿晶口表面的Ｃａ及其它元素含量。结果表明，微量Ｃａ明显提高６０ＣｒＭｎＣｕＶ钢回火马氏的室温击韧性。Ａｕｇｅｒ能谱分析表明，Ｃａ在奥氏体晶界有明显的偏聚，促进Ｃｒ的偏聚，抑制硫的晶偏聚。认为Ｃａ抑制硫的晶界偏聚作用是韧化的重要原因。
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| 关 键 词： | 冲击韧性 晶界偏聚 60CrMnCuV 钙 |
EFFECT OF Ca ON SEGREGATION OF S AND IMPACT TOUGHNESS IN 60CrMnCuV STEEL |
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| LI Chengji,GAO Dechun,CAO Fengyu,LU Feng University of Science and Technology Beijing.EFFECT OF Ca ON SEGREGATION OF S AND IMPACT TOUGHNESS IN 60CrMnCuV STEEL[J].Acta Metallurgica Sinica,1993,29(12):8-13. |
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| Authors: | LI Chengji GAO Dechun CAO Fengyu LU Feng University of Science and Technology Beijing |
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| Affiliation: | LI Chengji;GAO Dechun;CAO Fengyu;LU Feng University of Science and Technology Beijing |
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| Abstract: | An addition of 0.005 wt-% Ca to 60CrMnCuV steel may improve markedlythe impact toughness, and restricts the intergranular fracture. AES analysis shows that Casegregates markedly at the austenite grain boundaries, and restricts the segregation of S ataustenite grain boundaries. It is belived that an important reason to improve the toughnessmay attributes to the interactions of Ca and S segregations at the grain boundaries ofaustenite |
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| Keywords: | Ca microalloying impact toughness segregation grain boundary 60CrMnCuV |
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