对具有高、低屈服强度的薄板坯连铸连轧工艺生产的Nb、Ti复合微合金化钢的热轧板进行了组织分析,研究了强化机制.组织分析表明,板卷均为铁素体组织.但具有高屈服强度的板卷铁素体呈现出非多边形特征,位错密度较高,晶粒明显小于低屈服强度的板卷.两类板卷中的复合型星形析出物较多,平均尺寸140-150 nm,消耗了钢中50%的Nb.强化机制研究表明,铁素体晶粒细化强化是主要强化机制,占总屈服强度的(43-46)%;两类板卷的析出强化效果微弱,只占总屈服强度的(4-6)%.位错强化与晶粒细化强化是板卷具有高屈服强度的原因.
参考文献
| [1] | DeArdo A J,Garcia C I,Palmiere E J.ASM Handbook,Vol.4,Heat Treating,Materials Park,OH,ASM International,1990:237 |
| [2] | Kang Y,Yu H,Wang K,Fu J,Liu D,Wang Z,Li L,Chen G.Proc Int Symp Thin Slab Casting Rolling,Guangzhou,China:The Chinese Society for Metals,2002:313 |
| [3] | Baker T N,Li Y,Wilson J A,Craven A J,Crowther D N.Mater Sci Technol,2004; 20:720 |
| [4] | Wang R,Hua M,Zhang H,Carcia C I.HSLA Steels 2005,Sanya,China,The Chinese Scoiety for Metals,2005:292 |
| [5] | Thillou V.Basic Metal Processing Research Institute Report,University of Pittsburgh,PA,USA,1997 |
| [6] | Ma X.Phys Test Chem Anal.Part B:Chemical Analysis,1985; 21(4):215(马翔.理化检验化学分册,1985;21(4):215) |
| [7] | Jia Y H,Lu C F,Liu Q B.Metall Anal,2004; 24(Suppl):463(贾云海,卢翠芬,刘庆斌.冶金分析,2004;24(Suppl):463) |
| [8] | Honeycombe R W K,Smith G M.In:Gifkins R C ed.,Int Conf ICSMA 6 Strength Met Alloy,Pergamon Press,1982:407 |
| [9] | Garcia J E.Master Thesis,University of Pittsburgh,2002 |
| [10] | Jun H J,Kang K B,Park C G.Scr Mater,2003; 49:1081 |
| [11] | Yong Q L,Ma M T,Wu B R.Microalloyed Steels-Physical and Mechanical Metallurgy.Beijing:China Machine Press,1989:57(雍岐龙,马鸣图,吴宝榕.微合金钢-物理和力学冶金.北京:机械工业出版社,1989:57) |
| [12] | Ashby M F.Strengthening Methods in Crystals.London:Applied Science Publishers Ltd,1971:137 |
| [13] | Gladman T,Dulieu D,Mcivor T D.Proc Int Conf Microalloying'75,New York:Union Carbide Corporation,1977:32 |
| [14] | Hong S G,Jun H J,Kang K B,Park C G.Scr Mater,2003; 48:1201 |
| [15] | Garcia C I,Ruiz-Aparicio A,Cho K,Ma Y,Graham C,Vazquez M,Ruiz-Aparicio L.Proc Int Symp Thin Slab Casting Rolling,Guangzhou,China:The Chinese Society for Metals,2002:397 |
| [16] | Kothe A,Kunze J,Backmann G,Mickel C.Mater Sci Forum,1998; 284-286:493 |
| [17] | Kneissl A C,Garcia C I,DeArdo A J.Proc Int Conf Processing,Microstructure and Properties Microalloyed Other Modern High Strength Low Alloy Steels,Warrendale,PA:ISS,1991:145 |
| [18] | Kejian H,Baker T N.In:Baker T N ed.,Proc Conf Titanium Technol Microalloy Steel,London:The Inst Mater,1997:115 |
| [19] | Craven A J,He K,Garvie L A J,Baker T N.Acta Mater,2000; 48:3857 |
| [20] | DeArdo A J,Marraccini R,Hua M J,Garcia C I.HSLA Steels 2005,Sanya,China,The Chinese Society for Metals,2005:23 |
| [21] | Fernandez A I,Uranga P,Lopez B,Rodriguez-Ibabe J M.Mater Sci Eng,2003; A361:367 |
| [22] | Fernandez A I,Uranga P,Lopez B,Rodriguez-Ibabe J M.ISIJ Int,2000; 40:893 |
| [23] | de Ardo A J.Conf Proc Niobium Science Technology.Orlando,Florida,USA:Niobium 2001 Limited,2001:427 |
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