赵征志,梁驹华,汪烈承,唐荻,许汉风,覃强

• 1:北京科技大学冶金工程研究院
• 2:北京科技大学高等工程师学院
• 3:中钢设备有限公司

摘要(Abstract)：

对冷轧C-Si-Mn系高强钢进行了淬火与配分(Q&P)处理。利用扫描电镜、电子背散射衍射、X射线衍射等实验手段,研究了Q&P工艺参数与残留奥氏体量的关系。结果表明,残留奥氏体量在峰值淬火温度周围较大范围内变化不大,均在15%以上。配分温度的升高和配分时间的增加有助于残留奥氏体量的提高,过高的配分参数则会导致残留奥氏体的分解与碳化物的析出。实验钢于760℃淬火至160℃后经450℃配分60 s,残留奥氏体量可以达到22%,保证了较高的强塑积23 GPa·%,其中抗拉强度1518 MPa,伸长率15.2%。

关键词(KeyWords)： Q&P工艺;高强度钢;残留奥氏体;力学性能

Abstract:

Keywords:

基金项目(Foundation): 中央高校基本科研业务费专项资金(FRF-TP-10-001A)

作者(Author): 赵征志,梁驹华,汪烈承,唐荻,许汉风,覃强

DOI: 10.13289/j.issn.1009-6264.2015.07.014

参考文献(References)：

• [1]Speer J,Matlock D K,De Cooman B C,et al.Carbon partitioning into austenite after martensite transformation[J].Acta Materialia,2003,51(9):2611-2622.
• [2]Matlock D K,Speer J G,De Moor E,et al.Recent developments in advanced high strength sheet steels for automotive applications:an overview[J].JESTECH,2012,15:1-12.
• [3]张玉杰,王存宇,刘文忠,等.变形温度对淬火配分钢微观组织和硬度的影响[J].材料热处理学报,2013,34(5):97-102.ZHANG Yu-jie,WANG Cun-yu,LIU Wen-zhong,et al.Effect of deformation temperature on microstructure and hardness of a low carbon alloyed steel treated by quenching and partitioning process[J].Transactions of Materials and Heat Treatment,2013,34(5):97-102.
• [4]赵晖,时捷,李楠,等.Si对中锰钢淬火配分组织和性能的影响[J].材料研究学报,2011,25(1):45-50.ZHAO Hui,SHI Jie,LI Nan,et al.Effects of Si on the microstructure and mechanical property of medium Mn steel treated by quenching and partitioning process[J].Chinese Journal of Materials Research A,2011,25(1):45-50.
• [5]Hsu Xu Zuyao T Y,Jin X J,Rong Y H.Strengthening and toughening mechanisms of quenching-partitioning-tempering(Q-P-T)steels[J].Journal of Alloys and Compounds,2013,577(S1):S568-S571.
• [6]王建军,焦贵鹏,刘沿东,等.Q&P热处理工艺对C-Si-Mn钢组织性能的影响[J].材料热处理学报,2013,34(3):104-107.WANG Jian-jun,JIAO Gui-peng,LIU Yan-dong,et al.Influence of quenching and partitioning process on microstructure and properties of a C-Si-Mn steel[J].Transactions of Materials and Heat Treatment,2013,34(3):104-107.
• [7]陈银莉,蒯振,赵爱民,等.退火及配分温度对Si-Mn系Q&P钢组织和性能的影响[J].材料热处理学报,2013,34(9):74-79.CHEN Yin-li,KUAI Zhen,ZHAO Ai-min,et al.Effect of two-phase region annealing temperature and partitioning temperature on microstructure and properties of a low carbon Si-Mn Q&P steel[J].Transactions of Materials and Heat Treatment,2013,34(9):74-79.
• [8]庄宝潼,唐荻,江海涛,等.Q&P钢配分过程中的组织演变[J].北京科技大学学报,2012,34(11):1288-1293.ZHUANG Bao-tong,TANG Di,JIANG Hai-tao,et al.Microstructural evolution in quenching&partitioning steel during partitioning process[J].Journal of University of Science and Technology Beijing,2012,34(11):1288-1293.
• [9]Santofimia M J,Nguyen-Minh T,Zhao L,et al.New low carbon Q&P steels containing film-like intercritical ferrite[J].Materials Science and Engineering A,2010,527(23):6429-6439.
• [10]Speer J G,Edmonds D V,Rizzo F C,et al.Partitioning of carbon from supersaturated plates of ferrite,with application to steel processing and fundamentals of the bainite transformation[J].Current Opinion in Solid State and Materials Science,2004,8(3/4):219-237.

文章评论(Comment)：