| ANTIMONY GRAIN BOUNDARY SEGREGATION AND ITS SUPPRESSION BY CERIUM IN Fe—2Mn—Sb STRUCTURAL STEELS |
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| 作者姓名： | Z.X.Yuan A.M.Guo J.Liu D.D.Shen J.Jia S.H.Song |
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| 作者单位： | School of Materials and Metallurgy，Wuhan University of Science and Technology，Wuhan 430081，China，Research Institute of Wuhan Iron and Steel Company，Wuhan 430080，China，School of Materials and Metallurgy，Wuhan University of Science and Technology，Wuhan 430081，China，School of Materials and Metallurgy，Wuhan University of Science and Technology，Wuhan 430081，China，School of Materials and Metallurgy，Wuhan University of Science and Technology，Wuhan 430081，China，School of Materiajs and Metallurgy，Wuhan University of Science and Technology，Wuhan 430081，China Materials Group，Department of Mechanical Engineering，Brunel Uliversity Uxbridge，Middlesex UBS 3PH，UK |
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| 摘 要： | Antimony grain boundary segregation in Fe-2%Mn-Sb structure steels has been studied through measurements of the ductile-brittle transition temperature in conjunction with scanning electron microscopy, Auger electron spectroscopy and secondary ion mass spectroscopy. The research result reveals that during tempering or ageing after quenching at 980℃, Sb segregates to grain boundaries with both equilibrium and non-equilibrium natures and brings about temper embrittlement in the steels. Cerium can relieve temper embrittlement of the steels and its segregation to grain boundaries may play an important role in reducing this embrittlement.
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| 收稿时间： | 2002-05-24 |
ANTIMONY GRAIN BOUNDARY SEGREGATION AND ITS SUPPRESSION BY CERIUM IN Fe-2%Mn-Sb STRUCTURAL STEELS |
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| Z.X.Yuan,A.M.Guo,J.Liu,D.D.Shen,J.Jia,S.H.Song.ANTIMONY GRAIN BOUNDARY SEGREGATION AND ITS SUPPRESSION BY CERIUM IN Fe-2%Mn-Sb STRUCTURAL STEELS[J].Acta Metallurgica Sinica(English Letters),2003,16(3):175-182. |
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| Authors: | ZXYuan AMGuo JLiu DDShen JJia SHSong |
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| Affiliation: | [1]SchoolofMaterialsandMetallurgy,WuhanUniversityofScienceandTechnology,Wuhan430081,China [2]ResearchInstituteofWuhanIromandSteelCompany,Wuhan430080,China [3]MaterialsGroup,DepartmentofMechanicalEngineering,BrunelUniversity,Uxbridge,MiddlesexUB83PH,UK |
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| Abstract: | Antimony grain boundary segregation in Fe-2%Mn-Sb structure steels has been studied through measurements of the ductile-brittle transition temperature in conjunction with scanning electron microscopy, Auger electron spectroscopy and secondary ion mass spectroscopy. The research result reveals that during tempering or ageing after quenching at 980C, Sb segregates to grain boundaries with both equilibrium and nonequilibrium natures and brings about temper embrittlement in the steels. Cerium can relieve temper embrittlement of the steels and its segregation to grain boundaries -05 play an important role in reducing this embrittlement. |
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| Keywords: | segregation grain boundary rare-earth embrittlement |
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