研究了流变压铸成形和传统压铸工艺下AZ91D镁合金连接压铸件的组织特征,分析了流变压铸过程中半固态浆料的形成和凝固行为,测试了FCR工艺下流变压铸拉伸件的力学性能.结果表明:FCR工艺下的流变压铸成形工艺不仅可以获得晶粒细小、形貌圆整的半固态组织,而且能够明显改善传统压铸成型件中的气孔缺陷,提高组织致密度.与传统压铸件相比,流变压铸拉伸件的抗拉强度和伸长率都有了明显的提高;T6热处理能进一步强化流变压铸拉伸件的性能,其抗拉强度和伸长率分别为286MPa和6.1％.
参考文献
| [1] | DECKER R F .The renaissance in magnesium[J].Advanced Ma terials & Processes,1998,154(3):31-33.,1998. |
| [2] | 杨少锋,王再友.压铸镁合金的研究进展及发展趋势[J].材料工程,2013(11):81-88. |
| [3] | 康永林,毛卫民,胡壮麒.金属材料半固态加工理论与技术[M].北京:科学出版社,2004.,2004. |
| [4] | 罗守靖,程远胜,单微微.半固态金属流变学[M].北京:国防工业出版社,2011.,2011. |
| [5] | 杨柳青,康永林,张帆,丁瑞华,李炯.AZ91D镁合金流变压铸成形组织特征[J].北京科技大学学报,2010(06):770-776. |
| [6] | PAN Q Y,FINDON M,APELIAN D.The continuous rheocon version process (CRP):A novel SSM approach[A].ALEXAN DROU A,APELIAN D.Proceedings of the 8th International Conference on Semi Solid Processing of Alloys and Composites[C].Limassol,Cyprus:Worcester Polytechnic Institute,2004.122-129.,2004. |
| [7] | JI S,FAN Z,BEVIS M J .Semi solid processing of engineering alloys by a twin screw rheomoulding process[J].Materials Sci enceandEngineering:A,2001,299:210-217.,2001. |
| [8] | ZHANG Fan,KANG Yong-lin,YANG Liu-qing,DING Rui-hua.Taper barrel rheomoulding process for semi-solid slurry preparation and microstructure evolution of A356 aluminum alloy[J].中国有色金属学报（英文版）,2010(09):1677-1684. |
| [9] | 杨小容,毛卫民,高冲.采用蛇形管通道浇注法制备半固态浆料[J].中国有色金属学报,2009(05):869-873. |
| [10] | GUO H M,YANG X J .Efficient refinement of spherical grain by LSPSF rheocasting process[J].Materials Science and Tech nology,2008,24(1):55-63.,2008. |
| [11] | 杨柳青,康永林,张帆,陶涛,丁瑞华.A357铝合金半固态流变压铸成形组织工艺研究[J].材料工程,2009(06):64-66,72. |
| [12] | 张帆,康永林,杨柳青,丁瑞华.浇注温度对合金熔体冷却规律和半固态组织的影响[J].北京科技大学学报,2010(11):1453-1458. |
| [13] | SEOPK,KIMDU,KANGCG .Effects of die shape and in jection conditions proposed with numerical integration design on liquid segregation and mechanical properties in semisolid die casting process[J].Journal of Materials Processing Technology,2006,176:45-54.,2006. |
| [14] | HUBH,TONGKK,NIUXP,etal .Design and optimization of runner and gating system for the die casting of thin walled magnesium telecommunication parts through numerical simula tion[J].Journal of Materials Processing Technology,2000,105:128-133.,2000. |
| [15] | ZHAO Hai-dong,BAI Yan-fei,OUYANG Xiao-xian,DONG Pu-yun.Simulation of mold filling and prediction of gas entrapment on practical high pressure die castings[J].中国有色金属学报（英文版）,2010(11):2064-2070. |
| [16] | ZHANG F,SONG N N,ZHANG J,et al.Numerical simula tion on the filling process of rheological die casting and forming defects analysis[A].MOLLER H,GOVENDER G.12th Inter national Conference on Semi solid Processing of Alloys and Com posites[C].Cape Town,South Africa:Trans Tech Publica tions,2012.293-298.,2012. |
| [17] | ZHOU B,KANG Y L,ZHANG J,et al.Forced convection rheomoulding process for semisolid slurry preparation and micro structure evolution of 7075 aluminum alloy[A].MOLLER H,GOVENDER G.12th International Conference on Semi solid Processing of Alloys and Composites[C].Cape Town,South Africa:Trans Tech Publications,2012.422-427.,2012. |
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