Influence of cerium on the microstructure and mechanical properties of semisolid A356 alloy produced by rheo-extrusion casting process

LIAO Wan-neng,KANG Yong-lin,QI Ming-fan,WEN Yu-hui

Physics Examination and Testing ›› 2017, Vol. 35 ›› Issue (1) : 8-13.

Physics Examination and Testing ›› 2017, Vol. 35 ›› Issue (1) : 8-13. DOI: 10.13228/j.boyuan.issn1001-0777.20160030
Test and Research

Influence of cerium on the microstructure and mechanical properties of semisolid A356 alloy produced by rheo-extrusion casting process

Author information +
History +

Abstract

The semisolid slurry of A356, modified by cerium, was manufactured by self-developed forced convection rheoforming machine (FCR), then the slurry was squeeze casting. Influences of cerium on the primary α-Al phases,eutectic silicon phases and mechanical properties of semisolid A356 alloy produced by rheo-extrusion casting process were researched. The results indicated that the addition of cerium modified the α-Al grains and eutectic silicon phases. When the content of cerium was 0.6%, the refining effect was the best,and the tensile strength of A356 alloy reached 216 MPa and 299 MPa, respectively, in the as-cast and T6 state, which was increased 12.6% and 15.2%, respectively,compared with the alloy without adding cerium element. Moreover, the elongation of A356 was greatly improved after the T6 heat treatment.

Cite this article

Download Citations
LIAO Mo-Nai, KANG Yong-Lin, ZHI Meng-Fan, et al. Influence of cerium on the microstructure and mechanical properties of semisolid A356 alloy produced by rheo-extrusion casting process[J]. Physics Examination and Testing, 2017, 35(1): 8-13 https://doi.org/10.13228/j.boyuan.issn1001-0777.20160030

References

?[1] WANG Jing, LI Pei-jie, MI Guang-bao, et al. Microstructural evolution caused by electromagnetic stirring in superheated AlSi7Mg alloys[J].Journal of Materials Processing Technology, 2010, 210(12): 1652.
?[2] 周冰,康永林,郜俊震,等.强制对流搅拌制备铝合金半固态浆料及其组织演变[J].中国有色金属学报,2014,24(1):61.
?[3] 朱文志,毛卫民,涂琴.蛇形通道浇注制备半固态浆料组织的演化[J].铸造,2014,63(4):341.
?[4] 董光明,孙国雄,廖恒成.共晶硅的变质[J].铸造,2005,54[1]:1.
?[5] Tsai Y C, Chou C Y, Lee S L, et al. Effect of trace La addition on the microstructures and mechanical properties of A356 (Al–7Si–0.35 Mg) aluminum alloys[J]. Journal of alloys and compounds, 2009, 487(1): 157.
?[6] Shi Z M, Wang Q, Zhao G, et al. Effects of erbium modification on the microstructure and mechanical properties of A356 aluminum alloys[J]. Materials Science and Engineering A, 2015, 626: 102.
?[7]祁明凡,康永林,周冰,等.流变压铸A380铝合金的显微组织与力学性能[J].中国有色金属学报,2015,25(8):2029.
?[8] Lu S Z, Hellawell A. The mechanism of silicon modification in aluminum-silicon alloys: impurity induced twinning[J]. Metallurgical Transactions A, 1987, 18(10): 1721.
?[9] Samuel E, Samuelb A M, Dotyc H W, et al. Intermetallic phases in Al–Si based cast alloys: new perspective[J], International Journal of Cast Metals Research,2014, 27(2), 107.
?[10] Tsai Y C, Lee S L, Lin C K. Effect of trace Ce addition on the microstructures and mechanical properties of A356 (AL–7SI–0.35 Mg) aluminum alloys[J]. Journal of the Chinese Institute of Engineers, 2011, 34(5): 609.

10

Accesses

0

Citation

Detail

Sections
Recommended

/