强磁场对Fe-0.4％C亚共析钢等温珠光体转变的影响.pdf

第42卷第3期
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Vol 42 No
2017年3月
HEAT TREATMMENT OF METALS
March 2017
强磁场对Fe-0.4%C亚共析钢等温珠光体转变的影响
李菁',张国宏
(1.武汉科技大学国际学院,湖北武汉430081;2.武汉科技大学理学院,湖北武汉430081)
摘要:研究了8T强磁场对Fe-0.4%C亚共折钢在共析温度以下等温转变组织的影响。结果表明:8T强磁场促进了Fe0.4%C亚共
析钢中珠光体相变,但降低了完全转变后珠光体面积分数。这是由于强磁场提高了FeC钢A2温度,从而提高了亚共析钢中先共
析铁素体的百分比,降低残留奥氏体面积分数,导致完全转变后珠光体白分比更小。强磁场能升高共析转变温度,降低转变温度和
共析转变温度之比,从而使珠光体片层间距减小。
关键词:强磁场;亚共析钢;铁素体;珠光体
中图分类号:TG142.1文献标志码:A文章编号:0254-6051(2017)03-0048-04
Influence of strong magnetic field on isothermal pearlite transformation in
Fe-0.4%C hypoeutectoid steel
(1. International School, Wuhan University of Science and Technology, Wuhan Hubei 430081, China
2, College of Science, wuhan University of Scienee and Technology, Wuhan Hubei 430081, China)
Abstract Influence of a strong magnetic field of8ton microstrueture f F-0. 4% steel after isothemal ransformain below the eutectoid
temperature was investigated. The results show that pearlite transformation is accelerated but the final volume fraction of pearlite after
completely transformation is decreased by the magnetic field of 8 T. This is due to that the magnetie field raises the A, temperature in Fe
steel, thereby improves the fraction Mf proeutectoid ferrite and reduces the fraction of residual austenite. And thus, the magnetic field
decreases the proportion of pearlite relative to proeutectoid ferrite. The magnetic field can raise the eutectoid temperature and the ratio of
transformation temperature to the eutectoid temperature. So the magnetic field can decrease the interlamellar spacing of pearlite
Keywords: strong magnetic field; hypoeutectoid sleel; proeutectoid ferrite; pearlite
强磁场是改变材料性能和开发新型材料的一种重
收稿日期
要技术手段。随着超导材料和超低温冷却技术的发
基金项目:湖北省自然科学基金(2016CEBA62)
展,10T左右强磁场的获得日益方便和经济。因而
作者简介:李(1979一),女,助理实验员,硕士,主要从事材料计算
与馍拟研究,E-mail: lijing75@wut,edu,cn。通讯作者:张国然,副教授
近二十年来强磁场下的材料制备与固态相变的研究成
博士,联系电话:027-68862315,E-rail:zhangguohong@wust.edu.cn
为材料科学中重要的研究领域之-21。利用钢中新
DO1:10.13251/J.issa.0254-6051,2017.03.011
日两相间磁性能的差异,强磁场可以明显促进钢中马
と心
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