EFFECT OF Ca ON SEGREGATION OF S AND IMPACT TOUGHNESS IN 60CrMnCuV STEEL

Acta Metall Sin

1993, Vol. 29

Issue (12): 8-13 DOI:

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EFFECT OF Ca ON SEGREGATION OF S AND IMPACT TOUGHNESS IN 60CrMnCuV STEEL

LI Chengji;GAO Dechun;CAO Fengyu;LU Feng University of Science and Technology Beijing

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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. Acta Metall Sin, 1993, 29(12): 8-13.

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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

Key words: Ca microalloying impact toughness segregation grain boundary 60CrMnCuV

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