孟征兵,吴光亮,刘新彬,周超洋,邢凯

• 1:中南大学资源加工与生物工程学院

摘要(Abstract)：

利用Gleebe1500热模拟试验机,对氮钛微合金化高强钢在薄板坯连铸连轧工艺下进行了热模拟试验,对模拟各工序下的Ti(C,N)析出物形貌进行观察和分析,并通过热力学、动力学分析了其析出的原因和条件,研究了Ti(C,N)析出物在热轧工艺中变化的全过程。研究表明:连铸过程中主要有直径200 nm的液析TiN;铸坯均热后有直径为50~100 nm的固析TiN,在原始奥氏体晶界和枝晶偏析带析出直径为100~200 nm的TiC;连轧后主要有形变诱导析出分布均匀、直径为10~30 nm的TiC;卷取后在铁素体中析出直径为6~15 nm弥散分布的TiC。

关键词(KeyWords)： 微合金化钢;高强钢;薄板坯连铸连轧;析出物

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金(50971135)

作者(Author): 孟征兵,吴光亮,刘新彬,周超洋,邢凯

DOI: 10.13289/j.issn.1009-6264.2014.04.020

参考文献(References)：

• [1]马小平,王立军,王园园,等.氮对马氏体不锈钢00Cr13Ni4Mo组织和性能的影响[J].材料热处理学报,2012,33(4):78-84.MA Xiao-ping,WANG Li-jun,WANG Yuan-yuan,et al.Effect of nitrogen on microstructure and properties of martensitic stainless steel 00Cr13Ni4Mo[J].Transactions of Materials and Heat Treatment,2012,33(4):78-84.
• [2]薛正良,吴映江,吴丽嘉,等.BOF-LF-RH-CC流程钢液增氮控制研究[J].武汉科技大学学报,2011,34(2):86-88.XUE Zheng-liang,WU Ying-jiang,WU Li-jia,et al.Control of nitrogen absorption in BOF-LF-RH-CC steelmaking process[J].Journal of Wuhan University of Science and Technology,2011,34(2):86-88.
• [3]郭小龙,郑之旺,孙立军,等.超深冲IF钢的生产技术与发展概况[J].上海金属,2008(1):39-43.GUO Xiao-long,ZHENG Zhi-wang,SUN Li-jun.Process technology and development situation of extra-deep drawing IF steel[J].Shanghai Metals,2008(1):39-43.
• [4]陈伟,施哲,赵宇,等.铌微合金化和控冷工艺开发HRB500抗震钢筋[J].材料热处理学报,2010,31(7):77-82.CHEN Wei,SHI Zhe,ZHAO Yu,et al.Development of Nb microalloyed HRB500 anti-seismic ribbled bars produced by controlled cooling process[J].Transactions of Materials and Heat Treatment,2010,31(7):77-82.
• [5]杨才福,张永权.氮在非调质钢中的作用[J].钢铁钒钛,2000,21(3):16-22.YANG Cai-fu,ZHANG Yong-quan.Role of nitrogen in non-quenched and tempered steel[J].Iron Steel Vanadium Titanium,2000,21(3):16-22.
• [6]王厚昕,李正邦.Si3N4用于400MPa高强钢筋的工艺研究[J].材料与冶金学报,2007,6(3):182-183.WANG Hou-xin,LI Zheng-bang.Experimental investigation on application Si3N4to producing 400MPa reinforcing bar steel[J].Journal of Materials and Metallurgy,2007,6(3):182-183.
• [7]王勇围,桂美文,周勇,等.V、N微合金化对高碳钢82B性能的影响[J].材料热处理学报,2011,32(1):82-86.WANG Yong-wei,GUI Mei-wen,ZHOU Yong,et al.Effect of V and N micro-alloying on properties of high carbon steel 82B[J].Transactions of Materials and Heat Treatment,2011,32(1):82-86.
• [8]Cobo S J,Sellars C M.Micro structural evolution of austenite under conditions simulating thin slab casting and hot direct rolling[J].Iron making and Steelmaking,2001,28(3):230-236.
• [9]Irvine K J,Pickering F B,Gladman T.Grain refined C-Mn steels[J].JISI,1967,205:161-182.
• [10]McLean A,Kay D A R.Control of Inclusions in HSLA Steels[M].New York:Union Carbides Corporation,1976:215-231.
• [11]毛新平,孙新军,康永林,等.薄板坯连铸连轧Ti微合金化的物理冶金学特征[J].金属学报,2006,42(10):1091-1095.MAO Xin-ping,SUN Xin-jun,KANG Yong-lin,et al.Physical metallurgy for the titanium microalloyed strip produced by thin slab casting and rolling Process[J].Acta Metallurgica Sinica,2006,42(10):1091-1095.
• [12]Mao X P,Huo X D,Sun X J,et al.Strengthening mechanisms of new 700MPa hot rolled Ti-microalloyed steel produced compact strip production[J].Journal of Materials Processing Technology,2010,2(12):1660-1666.
• [13]Liu W J.A new theory and kinetic modeling of strain-induced precipitation of Nb(C,N)in microalloyed austenite[J].Metallurgical and Transactions A,1995,23(6):1641-1657.
• [14]Dong J X,Siciliano Jr,Fulvio,et al.Effect of silicon on the kinetics of Nb(C,N)precipitation during the hot working of Nb-bearing steels[J].ISIJ International,2000,40(6):613-618.
• [15]Fulvio S J,John J J.Mathematical modeling of the hot strip rolling of microalloyed Nb,multiple-alloyed Cr-Mo and Plain C-Mn steels[J].Metallurgical and Materials Transactions A,2000,31(2):511-530.
• [16]Poths R M,Higginson R L,Palmiere E J.Complex precipitation behavior in a microalloyed plate steel[J].Scripta Materialia,2001,44(1):147-151.

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