材料期刊网

KINETICS OF AUSTENITIC ISOTHERMAL DECOMPOSITION AND Mn PARTITION IN Fe-C-Mn-B ALLOYS

YANG Liu Southwestern Jiaotong University , Chengdu , ChinaFANG Hongsheng Tsinghua University , Beijing , ChinaMENG Zhihe Luoyang Institute of Technology , China

金属学报(英文版)

A proper addition of Mn to Fe-C alloys could delay the isothermal transformation and change remarkably the TTT-curves to bay-like shape.The concentration of Mn at the α/γ interphase boundary and thir partition between α- and γ- phase were measured by STEM/TEM-EDAX.The results show that the partition of Mn diminishes gradually as the reaction temperature decreases.There exists a certain temperature range with the strong- est Mn concentration spike at the interphase although no Mn partition is found between austenite and ferrite,and this temperature range is correspondent with the bay-temperature on TTT curves of the alloys.It is thus suggests that the change of TTT-curve configuration is due to the partition of alloy elements.The bay-like shape is attributed to the solute drag ef- fect and the solute drag-like effect caused by the enrichment of Mn at the α/γ interphase.

关键词: TTT curve , null , null , null , null

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中国物理C

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中国物理C doi:10.1088/1674-1137/39/1/017001

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JIA Shizhen University of Science and Technology Beijing , China.

材料科学技术（英文）

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材料科学技术（英文）

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材料科学技术（英文）

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稀有金属（英文版）

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