相变返温后冷却工艺对82B盘条组织性能的影响

doi:10.13228/j.boyuan.issn0449-749X.20140072

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Abstract The character of microstructure and property in the segregation of 82B wire with three different stelmor control cooling procedures after tansformation-temperature-rising was researched. between 2-10 ℃/s, the cooling rate decreased to 2 ℃/s after transformation of temperature. And for 82B, the kinetics of eutectoid transformation of segregation through thermal simulation in the range of 400-600 ℃ were researched. The longitudinal section segregation microstructure and composition were analyzed by measures such as OM, SEM and EPMA. The thermal simulation results show that the length of martensite segregation bands decreased as holding time increased, and martensite band in the core of wire where the content of elements such as Mn and Cr was higher than matrix because of segregation. Furthermore, Stelmor control cooling experiments in the high speed wire mill confirms that the core of controlling martensite was slow cooling speed procedure in the post-transformation section of cooling line, while the properties of 82B will be optimized.

Received: 14 February 2014 Published: 13 October 2014

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	YU Meng

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YU Meng. Influence of Cooling Procedure After Transformation-Temperature-Rising on Microstructure and Property of 82B Wires[J]. Iron and Steel, 2014, 49(10): 76-81.

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http://www.chinamet.cn/Jweb_gt/EN/10.13228/j.boyuan.issn0449-749X.20140072 OR http://www.chinamet.cn/Jweb_gt/EN/Y2014/V49/I10/76

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