胡海江,徐光,张玉龙,周明星

• 1:武汉科技大学钢铁冶金及资源利用省部共建教育部重点实验室
• 2:宝钢汽车用钢与应用技术开发国家重点实验室(宝钢集团)

摘要(Abstract)：

奥氏体预变形影响后续贝氏体相变,采用SEM、膨胀法和XRD衍射分析等实验方法,研究了奥氏体预变形对等温贝氏体相变动力学的影响规律。结果表明,300℃变形25%加速贝氏体相变,且贝氏体最终转量增多,室温组织中残留奥氏体量与贝氏体转变量相关,随贝氏体转变量增大而增多,变形对等温贝氏体相变的影响与变形温度和变形程度有关。此外,首次提出了变形条件下贝氏体相变动力学Avrami修正模型,为下一步系统建立变形条件下贝氏体相变动力学模型提供了参考。本文的结果为缩短高强塑积无碳化物贝氏体钢生产时间提供了有效途径。

关键词(KeyWords)： 变形;相变动力学;组织;膨胀量

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金面上项目(51274154);; 国家高技术研究发展计划(“863”计划)(2012AA03A504);; 宝钢汽车用钢开发与应用技术国家重点实验室重点项目(BS-2012-01)

作者(Author): 胡海江,徐光,张玉龙,周明星

DOI: 10.13289/j.issn.1009-6264.2015.12.042

参考文献(References)：

• [1]Davenport E S,Bain E C.Transformation of austenite at constant subcritical temperatures[J].Transactions of the Metals Society of AIME,1930,90:117-154.
• [2]Bhadeshia H K D H,Edmonds D V.The bainite transformation in a silicon steel[J].Metallurgical Transactions A,1979,10:895-907.
• [3]Caballero F G,Bhadeshia H K D H,Mawella K J A,et al.Very strong low temperature bainite[J].Materials Science and Technology,2002,18:279-284.
• [4]Garcia-Mateo C,Caballero F G,Bhadeshia H K D H.Low temperature bainite[J].Journal de Physique IV,2003,112:285-288.
• [5]Wang T S,Li X Y,Zhang F C,et al.Microstructures and impact toughness of low-alloy high-carbon steel austempered at low temperature[J].Scripta Materialia,2009,61:434-437.
• [6]Caballero F G,Miller M K,Babu S S,et al.Atomic scale observations of bainite transformation in a high carbon high silicon steel[J].Acta Materialia,2007,55:381-390.
• [7]Garcia-Mateo C,Caballero F G,Bhadeshia H K D H.Acceleration of low temperature bainite[J].ISIJ International,2003,43:1821-1825.
• [8]Soliman M,Mostafa H,El-Sabbagh A S,et al.Low temperature bainite in steel with 0.26 wt%C[J].Materials Science and Engineering A,2010,527:7706-7713
• [9]赵洪壮,LEE Seok-jae,LEE Young-kook,等.奥氏体化时间对AISI 4340钢贝氏体连续转变动力学的影响[J].材料热处理学报,2006,27(4):53-56.ZHAO Hong-zhuang,LEE Seok-jae,LEE Young-kook,et al.The effects of austenitizing time on bainite continuous transformation kinetics of AISI4340 steel[J].Transactions of Materials and Heat Treatment,2006,27(4):53-56.
• [10]赵洪壮,LEE Young-kook,刘相华,等.奥氏体晶粒度对AISI 4340钢贝氏体相变动力学的影响[J].材料热处理学报,2006,27(2):59-62.ZHAO Hong-zhuang,LEE Young-kook,LIU Xiang-hua,et al.The effects of austenite grain size on banite transformation kinetics in AISI 4340 steel[J].Transactions of Materials and Heat Treatment,2006,27(2):59-62.
• [11]徐祖耀.应力对钢中贝氏体相变的影响[J].金属学报,2004,40(2):113-119.Hsu T Y.Effect of stress on bainitic transformation in steel[J].Acta Metallurgica Sinica,2004,40(2):113-119.
• [12]衣海龙,杜秀林,王国栋,等.热变形参数对铌微合金钢贝氏体相变的影响[J].材料热处理学报,2006,27(2):50-53.YI Hai-long,DU Xiu-lin,WANG Guo-dong,et al.Effect of deformation parameters on bainite transformation of Nb-microalloyed low carbon steel[J].Transactions of Materials and Heat Treatment,2006,27(2):50-53.
• [13]Yao C K,Zhang Y M,Men X Y,et al.Transformation to pearlite from austenitized and recrystallized austenite[J].Materials Science and Engineering,1986,83:1-6.
• [14]Strife J R,Carr M J,Ansell G S.The effect of austenite prestrain above the Md temperature on the martensitic transformation in Fe-Ni-Cr-C alloys[J].Metallurgical Transactions A,1977,8:1471-1484.
• [15]Caballero F G,Garcia-Mateo C,Santomia M J,et al.New experimental evidence on the incomplete transformation phenomenon in steel[J].Acta Materialia,2009,57:8-17.
• [16]Xiong X C,Chen B,Huang M X,et al.The effect of morphology on the stability of retained austenite in a quenched and partitioned steel[J].Scripta Materialia,2013,68:321-324.
• [17]Bhadeshia H K D H.The bainite transformation:unresolved issues[J].Materials Science and Engineering A,1999,273-275:58-66.
• [18]Singh S B,Bhadeshia H K D H.Quantitative evidence for mechanical stabilization of bainite[J].Materials Science and Technology,1996,12:610-612.

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