刘雯,周晓玲,张希俊,李增,邱豪

• 1:昆明理工大学材料科学与工程学院

摘要(Abstract)：

对硅锰铸钢在相变温度(A1)附近进行等温处理的研究表明,经磁场处理后的试样组织中存在更多的粒状珠光体组织。此粒状珠光体由两部分构成:一部分来自块状铁素体中直接析出粒状的不连续渗碳体;一部分来自等温过程中片状渗碳体的熔断。磁场通过促进铁素体的形核与长大,使较多的碳原子"陷落"在铁素体内以沉淀析出方式形成粒状渗碳体,处理温度越低,此作用越明显。此外,磁场下珠光体组成相磁致伸缩率存在差异,引起珠光体两组成相之间的应变能变化,有利于渗碳体以球状析出于奥氏体或铁素体中,也对粒状珠光体分数的增加作出贡献。

关键词(KeyWords)： 硅锰铸钢;磁场;粒状珠光体

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金资助项目(50971067)

作者(Author): 刘雯,周晓玲,张希俊,李增,邱豪

DOI: 10.13289/j.issn.1009-6264.2012.04.013

参考文献(References)：

• [1]Watanabe T,Tsurekawa S,Zhao X,et al.A new challenget grain boundary engineering for advanced materials by magnetic field application[J].J Mater Sci,2006,41:7747-7759.
• [2]王亚男,廖代强,武战军.稳恒磁场对铁素体转变的影响[J].材料热处理学报,2005,26(5):105-108.WANG Ya-nan,LIAO Dai-qiang,WU Zhan-jun.Effect of stable magnetic field on the phase transformation of steels[J].Trans Mater Heat Treat,2005,26(5):105-108.
• [3]Ohtsuka H,Xu Y,Choi J K,et al.Diffusion transformation behavior and structure in high magetic field[C]∥The3 rd international symposium on EPM.Nagoya:The Iron and Steel Institute of Japan,2000:596-598.
• [4]周晓玲,周荣,蒋业华,等.磁循环处理对珠光体相变的诱发作用[J].金属热处理,2008,33(10):68-73.ZHOU Xiao-ling,ZHOU Rong,JIANG Ye-hua,et al.Influence of magnetic circling treatment on inducing pearlite transformation[J].Heat Treatment of Metals,2008,33(10):68-73.
• [5]Shimotomal M,Maruta K.Aligned two-phase structures in Fe-C alloys[J].Scripta Mater,2000,42(5):499-503.
• [6]Ohtsuka H.Effect of strong magnetic field on bainitic transformation[J].Current Opinion in Solid State and Materials Science,2004,8:279-284.
• [7]Jaramillo R A,Babu S S,Ludtka G M,et al.Effect of30T magnetic field on transformations in a novel bainitic steel[J].Scripta Mater,2005,52(3):461-466.
• [8]Ma G J,Wu C W,Zhou W L,et al.Initial study of strengthening of NiAl-Cr(Mo)-Hf alloys by strong magnetic field[J].J Mater Res,2005,20(2):295-298.
• [9]Ma Y W,Xu A X,Li X H,et al.Improved properities of epitaxial YNi x Mn l—x O 3 films by annealing under high magnetic fields[J].App lPhys Lett,2006,89:152505(1)-152505(3).
• [10]刘宗昌.珠光体转变与退火[M].北京:化学工业出版社,2007.
• [11]肖春涛.磁学及磁性材料导论[M].兰州:兰州大学出版社,2003.
• [12]Hsu T Y.Theory of Phase Transformation[M].Beijing:Science Press of China,1988:35-43.
• [13]Zhou X L,Zhou R,Zhang P X,et al.Magnetic field induced pearlite transformation in Fe-0.47C-2.31Si-3.15Mn steel above the eutectoid temperature[J].Materials Science and Engineering A,2009,525(1-2):42-47.

文章评论(Comment)：