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The La2(CO3)3 addition makes the grain of AZ91 alloy be refined obviously.The average primary dendrite size of the alloy decreases from 150 to 50 μm.The microstructure of typical dendrite turns into the equal-axed grain with the addition of 2.5 wt.% La2(CO3)3 refiner.The mechanical properties tests indicate that the tensile strength and especially elongation of the alloys are improved with the addition of La2(CO3)3 and their maximum enhancing rates based on the La2(CO3)3-free AZ91 alloy are 26% and 5.2 times at 2.5 wt.% La2(CO3)3 refiner respectively.

参考文献

[1] Zhao H F.Magnesium alloy and tts composites[M].北京:中国科学技术出版社,2002:36.
[2] Pekguleryuz M O;Avedesian M M .Magnesium alloying,some potentials for alloy development[J].Light Metals,1992,42(12):25.
[3] Motegi T;Satio E;Obata K .Cast structures and grain refinement of superheat-treated Mg-Al alloys[J].Light Metals,1994,44(08):35.
[4] Tamura Y;Kono N;Motegi T et al.Grain refining mechanism and casting of Mg-Zr alloy[J].Journal of Japan Institute of Light Metals,1998,48(04):79.
[5] Lee Y C;Dahle A K;Sbjohn D H .The role of solute in grain refinement of magnesium[J].Metallurgical and Materials Transactions,2000,31:2895.
[6] Qian M;John D H .Heterogeneous nuclei size in magnesium-zirconium alloys[J].Scripta Materialia,2004,50:1115.
[7] Yang Qiuhong,Zeng Zhijiang,Xu Jun,Zhang Hongwei,Ding Jun.Effect of La2O3 on Microstructure and Transmittance of Transparent Alumina Ceramics[J].稀土学报(英文版),2006(01):72-75.
[8] Ping D H;Hono K;Nie J F .Atom probe characterization of plate-like precipitates in a Mg-RE-Zn-Zr casting alloy[J].Scripta Materialia,2003,48:1017.
[9] Lee K;Losert W .Controlled dynamics of grain boundaries in binary alloys[J].Acta materialia,2005(12):3503-3510.
[10] Zhang M X;Kelly P M;Easton M A et al.Crystallographic study of grain refinement in aluminum alloys using the edge-to-edge matching model[J].ACTA MATERIALIA,2005,53:1427.
[11] Zhen Z Q.Fundamentals of Materials Science[M].长沙:中南大学出版社,2002:256.
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