第2期 杨景红等:轧制工艺对微合金管线钢组织及/A岛的影响 .185. 织性能的关系.钢铁,2005,40(3):70) 4结论 [4]Zhang H M.Wang HB.Liu Z Y.Study on the grain refinement mechanism of low carbon micro-alloyed steels for line pipe applica- (1)冷速对管线钢组织有较大影响,随冷速增 tions.Trans Mater Heat Treat,2006.27(6):99 大,晶粒变细,组织中针状铁素体体积分数增多;变 (张红梅,王宏斌,刘振宇.X70微合金管线钢组织中针状铁 形提高Yα转变的相变温度,扩大了形成针状铁素 素体细化机制的研究.材料热处理学报,2006,27(6):99) 体组织的冷速范围 [5]Shanmugam S.Misra R D K.Hartmann J.et al.Microstructure (2)随变形温度的降低,实验钢组织变细,针状 of high strength niobium-containing pipeline stee Mater SciEng A,2006,441,215 铁素体量增加;随变形量的加大,一定冷速下针状铁 [6]Yang X N.Kong Y L.Yu H.et al.Technology control for the 素体量有所减少,但晶粒更加细小、均匀, structure of martensite/austenite islands of X70 acicular ferrite (3)变形后冷却过程中形成细小弥散的M/A pipeline steel.Steel Rolling.2007,24(4):7 小岛组织,变形温度对M/A小岛影响不明显;但随 (杨旭宁,康永林,于浩,等.X70针状铁素体管线钢中M/A 冷速及变形量的增加,M/A岛体积分数有所减少, 岛的工艺控制.轧钢,2007,24(4):7) M/A小岛更细小、弥散,通过合理控轧参数可优化 [7]Wang C M,Wu X F,Liu J,et al.Transmission electron mi- croscopy of martensite/austenite islands in pipeline steel X70. 组织,细化M/A小岛并使其均匀分布,提高钢材性 Mater Sci Eng A.2006.438/440:267 能 [8]Li H L.Guo S W,Feng Y R,et al.Microstructure Analysis and Micrograph Distinguishing of High Strength Microalloyed 参考文献 Pipeline Steel.Beijing:Petroleum Industry Press.2001 [1]Zhao M C.Shan YY.Xiao F R,et al.Study on formation and (李鹤林,郭生武,冯耀荣,等。高强度微合金管线钢显微组 strength toughness behavior of acicular ferrite in a pipeline 织分析与鉴别图谱:北京.石油工业出版社,2001) steel.Mater Sci Technol.2001,9(4):356 [9]Motohashi H.Hagiwara N.Masuda T.Tensile properties and (赵明纯,单以银,肖福仁,等.管线钢中针状铁素体的形成 microstructure of weld metal of X80 steel.Mater Sci Forum, 及其强韧性的分析.材料科学与工艺,2001,9(4):356) 2003,426/432:4013 [2]Shang C J.Wang X M.Yang S W.et al.Microstructure refine- [10]Zhang X L.Zhuang C J.Ji L K.et al.Structure feature and ment of high strength low carbon bainitic steel.Acta Metall Sin. strength-toughness of high grade pipeline steels.Spec Steel, 2003,39(10):1019 2006,27(6):27 (尚成嘉,王学敏,杨善武,等.高强度低碳贝氏体钢的工艺 (张小立,庄传晶,吉玲康,等.高钢级管线钢的组织特征及 与组织细化.金属学报,2003,39(10):1019) 强韧性.特殊钢,2006,27(6):27) [3]Wang C M,Wu X F,Liu J.et al.Relationship between mi- [11]Kong J H.Zheng L,Guo B.et al.Influence of Mo on mi- crostructure and properties of X70 pipeline steel and controlled crostructures and properties of low carbon microalloyed steels. rolling and controlled cooling process.Iron Steel.2005.40(3): Steel Rolling.2005.22(4):27 70 (孔君华,郑琳,郭斌,等,钼对低碳微合金钢组织和性能的 (王春明,吴杏芳,刘阶,等,X70管线钢控轧控冷工艺与组 影响.轧钢,2005,22(4):27)4 结论 (1) 冷速对管线钢组织有较大影响随冷速增 大晶粒变细组织中针状铁素体体积分数增多;变 形提高γ→α转变的相变温度扩大了形成针状铁素 体组织的冷速范围. (2) 随变形温度的降低实验钢组织变细针状 铁素体量增加;随变形量的加大一定冷速下针状铁 素体量有所减少但晶粒更加细小、均匀. (3) 变形后冷却过程中形成细小弥散的 M/A 小岛组织变形温度对 M/A 小岛影响不明显;但随 冷速及变形量的增加M/A 岛体积分数有所减少 M/A 小岛更细小、弥散.通过合理控轧参数可优化 组织细化 M/A 小岛并使其均匀分布提高钢材性 能. 参 考 文 献 [1] Zhao M CShan Y YXiao F Ret al.Study on formation and strength & toughness behavior of acicular ferrite in a pipeline steel.Mater Sci Technol20019(4):356 (赵明纯单以银肖福仁等.管线钢中针状铁素体的形成 及其强韧性的分析.材料科学与工艺20019(4):356) [2] Shang C JWang X MYang S Wet al.Microstructure refinement of high strength low carbon bainitic steel.Acta Metall Sin 200339(10):1019 (尚成嘉王学敏杨善武等.高强度低碳贝氏体钢的工艺 与组织细化.金属学报200339(10):1019) [3] Wang C MWu X FLiu Jet al.Relationship between microstructure and properties of X70 pipeline steel and controlled rolling and controlled cooling process.Iron Steel200540(3): 70 (王春明吴杏芳刘 等.X70管线钢控轧控冷工艺与组 织性能的关系.钢铁200540(3):70) [4] Zhang H MWang H BLiu Z Y.Study on the grain refinement mechanism of low carbon micro-alloyed steels for line-pipe applications.T rans Mater Heat T reat200627(6):99 (张红梅王宏斌刘振宇.X70微合金管线钢组织中针状铁 素体细化机制的研究.材料热处理学报200627(6):99) [5] Shanmugam SMisra R D KHartmann Jet al.Microstructure of high strength niobium-containing pipeline steel.Mater Sci Eng A2006441:215 [6] Yang X NKong Y LYu Het al.Technology control for the structure of martensite/austenite islands of X70 acicular ferrite pipeline steel.Steel Rolling200724(4):7 (杨旭宁康永林于浩等.X70针状铁素体管线钢中 M/A 岛的工艺控制.轧钢200724(4):7) [7] Wang C MWu X FLiu Jet al.Transmission electron microscopy of martensite/austenite islands in pipeline steel X70. Mater Sci Eng A2006438/440:267 [8] Li H LGuo S WFeng Y Ret al. Microstructure A nalysis and Micrograph Distinguishing of High Strength Microalloyed Pipeline Steel.Beijing:Petroleum Industry Press2001 (李鹤林郭生武冯耀荣等.高强度微合金管线钢显微组 织分析与鉴别图谱:北京.石油工业出版社2001) [9] Motohashi HHagiwara NMasuda T.Tensile properties and microstructure of weld metal of X80 steel. Mater Sci Forum 2003426/432:4013 [10] Zhang X LZhuang C JJi L Ket al.Structure feature and strength-toughness of high grade pipeline steels. Spec Steel 200627(6):27 (张小立庄传晶吉玲康等.高钢级管线钢的组织特征及 强韧性.特殊钢200627(6):27) [11] Kong J HZheng LGuo Bet al.Influence of Mo on microstructures and properties of low carbon microalloyed steels. Steel Rolling200522(4):27 (孔君华郑琳郭斌等.钼对低碳微合金钢组织和性能的 影响.轧钢200522(4):27) 第2期 杨景红等: 轧制工艺对微合金管线钢组织及 M/A 岛的影响 ·185·