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第12期 张复懿等:TC,/70751基复合材料半固态坯料二次加热组织 .1587. 参考文献 [1]Liu H W.Zhang L.Wang J J.et al.Self-reactive spray formed 接触周界 (2nrcos o) TiC-TiB2 composite ceramic perform.Chin J Mater Res.2008. 22(3):274 (刘宏伟,张龙,王建江,等.自反应喷射成形制备TC-TB2复 合陶瓷.材料研究学报,2008,22(3):274) TC颗粒 [2]Zhou J.Zhang T J.Zhang X M.et al.The influence of strain rate and solution treatment on dynamic recrystallization for 7075 图8TC颗粒对晶界迁移的阻碍作用 aluminum alloy.Rare Met Mater Eng.2004.33(6):580 Fig.8 Hindering effect of TiC particles for grain boundary migra- (周建,张廷杰,张小明,等.应变速率和固溶处理对7075铝合 tion 金锻件动态再结晶的影响。稀有金属材料与工程,2004,33 (6):580) 1200 1000 ■4.49%TiC/7075 [3]Meyer O.Fritsching U.Bauchage K.Numerical investigation of 。7075 alternative process conditions for influencing the thermal history of 800 spray deposited billets.Int J Therm Sei.2003.42:153 [4]Callister WDJr.Fundamentals of Materials Science and Engi- 600 neering 5th Ed.Beijing:Chemical Industry Press.2004 400 (凯里斯特.材料科学与工程基础.5版.北京:化学工业出版 社,2004) 200 [5]Liu W J.Xiong W H.Zheng Y.Appearance of fracture and toughening mechanisms of Ti(C.N)-based cermets.Chin J Non- 10 20 40 时间min ferrous Met,2006,16(5).800 (刘文俊,熊惟皓,郑勇·Ti(C,N)基金属陶瓷断口形貌及增韧 图9TiC/7075A1基复合材料和7075A1合金的晶粒粗化动力学 机理.中国有色金属学报,2006,16(5):800) 曲线 [6]Wu G.Yao L J.Li Z X,et al.Handbook of Aluminum and Fig.9 Grain coarsening kinetic curves of TiCp/7075Al composites Aluminum Alloys.Beijing:Science Press.1997 and 7075 alloy (武恭,姚良均,李震霞,等。铝及铝合金材料手册,北京:科学 出版社,1997) 数为118.96m3·s1.两者相比较可知,4.4% [7]Lu G M.Ren X F.Dong J.et al.Liquid fraction of 7075 alu- TiC,/7075A1基复合材料的粗化速率常数远小于基 minum alloy cast by LSC during reheating.INortheast Univ Nat 体合金,这表明4.4%TiC,/7075Al基复合材料在 Sci,2002,23(9).877 (路贵民,任栖锋,董杰,等.70751合金LSC铸锭二次加热中 二次加热过程中晶粒长大趋势较小,具有较高的热 的液固相体积分数.东北大学学报:自然科学版,2002,23(9): 稳定性 877) 3结论 [8]Guan R G.Ma W M.Theory and Technology of Semi-Solid Metal Forming Beijing:Metallurgical Industry Press.2005 (1)通过实验得到了二次加热工艺参数对 (管仁国,马伟民,金属半固态成形理论与技术.北京:冶金工 4.4%TiC,/7075A1基复合材料二次加热组织的影 业出版社,2005) [9]Liu H M,He J P,Yang B.et al.Grain growth law of semi-solid 响规律,确定最佳二次加热工艺参数是:二次加热温 state TiC/7075Al alloy prepared by spray deposition.Acta Met- 度为590~610℃,保温时间为10~20min. all Sin,2006,42(2):158 (2)4.4%TiC./7075A1基复合材料在二次加热 (刘慧敏,何建平,杨滨,等.半固态喷射沉积TC,/7075铝合 过程中具有较高的热稳定性,随温度升高和保温时 金的晶粒长大规律.金属学报,2006,42(2):158) 间增加,球形晶粒的平均等积圆直径增加较小,球化 [10]Ji JX.DongS Q,Liang Y F,et al.Strengthing and toughening mechanisms of in situ TiC particulates reinforced Al-4.5Cu al- 效果较好.4.4%TiC./7075A1基复合材料在600℃ loy.Foundry Technol,2008.29(6):786 时的晶粒粗化速率常数为118.96m3s1,小于7075 (纪锦霞,董晟全,梁艳峰,等.TiC原位增强A4.5Cu合金 基体合金的晶粒粗化速率常数311.7hm3s1. 的强韧化机理.铸造技术,2008,29(6):786)图8 TiC 颗粒对晶界迁移的阻碍作用 Fig.8 Hindering effect of TiC particles for grain boundary migra￾tion 图9 TiCp/7075Al 基复合材料和7075Al 合金的晶粒粗化动力学 曲线 Fig.9 Grain coarsening kinetic curves of TiCp/7075Al composites and7075alloy 数为 118∙96μm 3·s -1.两者相比较可知‚4∙4% TiCp/7075Al 基复合材料的粗化速率常数远小于基 体合金.这表明4∙4%TiCp/7075Al 基复合材料在 二次加热过程中晶粒长大趋势较小‚具有较高的热 稳定性. 3 结论 (1) 通过实验得到了二次加热工艺参数对 4∙4%TiCp/7075Al 基复合材料二次加热组织的影 响规律‚确定最佳二次加热工艺参数是:二次加热温 度为590~610℃‚保温时间为10~20min. (2)4∙4%TiCp/7075Al 基复合材料在二次加热 过程中具有较高的热稳定性‚随温度升高和保温时 间增加‚球形晶粒的平均等积圆直径增加较小‚球化 效果较好.4∙4%TiCp/7075Al 基复合材料在600℃ 时的晶粒粗化速率常数为118∙96μm 3·s -1‚小于7075 基体合金的晶粒粗化速率常数311∙7μm 3·s -1. 参 考 文 献 [1] Liu H W‚Zhang L‚Wang J J‚et al.Self-reactive spray formed TiC-TiB2composite ceramic perform.Chin J Mater Res‚2008‚ 22(3):274 (刘宏伟‚张龙‚王建江‚等.自反应喷射成形制备 TiC-TiB2 复 合陶瓷.材料研究学报‚2008‚22(3):274) [2] Zhou J‚Zhang T J‚Zhang X M‚et al.The influence of strain rate and solution treatment on dynamic recrystallization for 7075 aluminum alloy.Rare Met Mater Eng‚2004‚33(6):580 (周建‚张廷杰‚张小明‚等.应变速率和固溶处理对7075铝合 金锻件动态再结晶的影响.稀有金属材料与工程‚2004‚33 (6):580) [3] Meyer O‚Fritsching U‚Bauchage K.Numerical investigation of alternative process conditions for influencing the thermal history of spray deposited billets.Int J Therm Sci‚2003‚42:153 [4] Callister W D Jr.Fundamentals of Materials Science and Engi￾neering.5th Ed.Beijing:Chemical Industry Press‚2004 (凯里斯特.材料科学与工程基础.5版.北京:化学工业出版 社‚2004) [5] Liu W J‚Xiong W H‚Zheng Y.Appearance of fracture and toughening mechanisms of Ti(C‚N)-based cermets.Chin J Non￾ferrous Met‚2006‚16(5):800 (刘文俊‚熊惟皓‚郑勇.Ti(C‚N)基金属陶瓷断口形貌及增韧 机理.中国有色金属学报‚2006‚16(5):800) [6] Wu G‚Yao L J‚Li Z X‚et al.Handbook of Aluminum and Aluminum Alloys.Beijing:Science Press‚1997 (武恭‚姚良均‚李震霞‚等.铝及铝合金材料手册.北京:科学 出版社‚1997) [7] Lu G M‚Ren X F‚Dong J‚et al.Liquid fraction of 7075alu￾minum alloy cast by LSC during reheating.J Northeast Univ Nat Sci‚2002‚23(9):877 (路贵民‚任栖锋‚董杰‚等.7075Al 合金 LSC 铸锭二次加热中 的液固相体积分数.东北大学学报:自然科学版‚2002‚23(9): 877) [8] Guan R G‚Ma W M. Theory and Technology of Semi-Solid Metal Forming.Beijing:Metallurgical Industry Press‚2005 (管仁国‚马伟民.金属半固态成形理论与技术.北京:冶金工 业出版社‚2005) [9] Liu H M‚He J P‚Yang B‚et al.Grain growth law of sem-i solid state TiCp/7075Al alloy prepared by spray deposition.Acta Met￾all Sin‚2006‚42(2):158 (刘慧敏‚何建平‚杨滨‚等.半固态喷射沉积 TiCp/7075铝合 金的晶粒长大规律.金属学报‚2006‚42(2):158) [10] Ji J X‚Dong S Q‚Liang Y F‚et al.Strengthing and toughening mechanisms of in-situ TiC particulates reinforced A-l4∙5Cu a-l loy.Foundry Technol‚2008‚29(6):786 (纪锦霞‚董晟全‚梁艳峰‚等.TiC 原位增强 A-l4∙5Cu 合金 的强韧化机理.铸造技术‚2008‚29(6):786) 第12期 张复懿等: TiCp/7075Al 基复合材料半固态坯料二次加热组织 ·1587·
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