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·1046· 工程科学学报,第39卷,第7期 偏析. EngA,2005,413414:272 [5]Guo L J,Xing S M,Bao P W,et al.Effect of process parameters 4结论 on Si segregation in an aluminum alloy during squeeze casting (1)挤压铸造中,沿流程方向,流程开始端和流程 Chin J Eng,2016,38(2):257 (郭莉军,邢书明,鲍培玮,等.间接挤压铸造工艺参数对铝 末端的S元素和Mg元素含量大于流程中段的含量.流 合金中Si偏析的影响.工程科学学报,2016,38(2):257) 程的前端和末端出现正偏析而流程中间段出现负偏析. [6 Zhang L Q,Li L X,Zhu B W.Simulation study on the LPDC (2)补缩液的强迫运动造成了Si元素和Mg元素 process for thin-walled aluminum alloy casting.Mater Manu 的偏析及组织的偏聚. Processes,2009,24(12):1349 (3)初生α晶粒尺寸随着流程长度的增加先增大 7]Han Q Y,Xu H B.Fluidity of alloys under high pressure die cast- 后减小,而初生相固相率随着流程长度的增加呈现波 ing conditions.Scr Mater,2005,53(1)7 [8]Zhu B W,Li L X,Liu X,et al.Microstructure and mechanical 动地变化 properties along fluidity length of thin-wall aluminum alloy under high pressure die casting conditions.Chin I Nonferrous Met, 参考文献 2012,22(8):2163 Qi PX.The last progress in squeezing casting technologies.Spee (朱必武,李落星,刘筱,等.薄壁铝合金压铸充型沿程的组 Casting Nonferrous Alloys,2007,27(9):688 织与力学性能.中国有色金属学报,2012,22(8):2163) (齐不骧.挤压铸造技术的最新发展.特种铸造及有色合金, [9]Lee S G,Patel G R,Gokhale A M.Inverse surface macro-segre- 2007,27(9):688) gation in high-pressure die-east AM60 magnesium alloy and its Tan J B.Xing S M.Li L X,ct al.Limiting length of semi-solid effects on fatigue behavior.Scr Mater,2005,52(10):1063 A356 alloy rheological filling.Chin J Nonferrous Met,2006,16 1o] Gan YQ,Zhang D T,Zhang WW,et al.Macrosegregation in (6):970 squeeze-cast Al5Cu0.4Mn alloy based on Taguchi method.Chin (谭建波,邢书明,李立新,等.半固态A356合金流变充型 J Nonferrous Met,2012,22(12)3386 的极限长度.中国有色金属学报,2006,16(6):970) (甘耀强,张大童,张卫文,等.基于田口方法的挤压铸造 B]Ravi K R.Pillai R M,Amaranathan K R,et al.Fluidity of alu- A5Cu0.4Mn合金宏观偏析.中国有色金属学报,2012,22 minum alloys and composites:a review.J Alloys Compd,2008, (12):3386) 456(12):201 [11]Hu H Q.Metal Solidification Principle.Beijing:China Machine 4]Di Sabatino M,Amberg L,Rorvik S,et al.The influence of ox- Press,1991 ide inclusions on the fluidity of Al -7wt.Si alloy.Mater Sci (胡汉起.金属凝固原理.北京:机械工业出版社,1991)工程科学学报,第 39 卷,第 7 期 偏析. 4 结论 ( 1) 挤压铸造中,沿流程方向,流程开始端和流程 末端的 Si 元素和 Mg 元素含量大于流程中段的含量. 流 程的前端和末端出现正偏析而流程中间段出现负偏析. ( 2) 补缩液的强迫运动造成了 Si 元素和 Mg 元素 的偏析及组织的偏聚. ( 3) 初生 α 晶粒尺寸随着流程长度的增加先增大 后减小,而初生相固相率随着流程长度的增加呈现波 动地变化. 参 考 文 献 [1] Qi P X. The last progress in squeezing casting technologies. Spec Casting Nonferrous Alloys,2007,27( 9) : 688 ( 齐丕骧. 挤压铸造技术的最新发展. 特种铸造及有色合金, 2007,27( 9) : 688) [2] Tan J B,Xing S M,Li L X,et al. Limiting length of semi-solid A356 alloy rheological filling. Chin J Nonferrous Met,2006,16 ( 6) : 970 ( 谭建波,邢书明,李立新,等. 半固态 A356 合金流变充型 的极限长度. 中国有色金属学报,2006,16( 6) : 970) [3] Ravi K R,Pillai R M,Amaranathan K R,et al. Fluidity of alu￾minum alloys and composites: a review. J Alloys Compd,2008, 456( 1-2) : 201 [4] Di Sabatino M,Arnberg L,Rrvik S,et al. The influence of ox￾ide inclusions on the fluidity of Al - 7wt. % Si alloy. Mater Sci Eng A,2005,413-414: 272 [5] Guo L J,Xing S M,Bao P W,et al. Effect of process parameters on Si segregation in an aluminum alloy during squeeze casting. Chin J Eng,2016,38( 2) : 257 ( 郭莉军,邢书明,鲍培玮,等. 间接挤压铸造工艺参数对铝 合金中 Si 偏析的影响. 工程科学学报,2016,38( 2) : 257) [6] Zhang L Q,Li L X,Zhu B W. Simulation study on the LPDC process for thin-walled aluminum alloy casting. Mater Manuf Processes,2009,24( 12) : 1349 [7] Han Q Y,Xu H B. Fluidity of alloys under high pressure die cast￾ing conditions. Scr Mater,2005,53( 1) : 7 [8] Zhu B W,Li L X,Liu X,et al. Microstructure and mechanical properties along fluidity length of thin-wall aluminum alloy under high pressure die casting conditions. Chin J Nonferrous Met, 2012,22( 8) : 2163 ( 朱必武,李落星,刘筱,等. 薄壁铝合金压铸充型沿程的组 织与力学性能. 中国有色金属学报,2012,22( 8) : 2163) [9] Lee S G,Patel G R,Gokhale A M. Inverse surface macro-segre￾gation in high-pressure die-cast AM60 magnesium alloy and its effects on fatigue behavior. Scr Mater,2005,52( 10) : 1063 [10] Gan Y Q,Zhang D T,Zhang W W,et al. Macrosegregation in squeeze-cast Al5Cu0. 4Mn alloy based on Taguchi method. Chin J Nonferrous Met,2012,22( 12) : 3386 ( 甘耀强,张大童,张卫文,等. 基于田口方法的挤压铸造 Al5Cu0. 4Mn 合金宏观偏析. 中国有色金属学报,2012,22 ( 12) : 3386) [11] Hu H Q. Metal Solidification Principle. Beijing: China Machine Press,1991 ( 胡汉起. 金属凝固原理. 北京: 机械工业出版社,1991) · 6401 ·
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