The Microstructure of The Semi-Solid ZL201 Alloy Obtained by Near-Liquidus Electromagnetic Casting and the Fine Mechanism

摘要:

文章预览

Electromagnetic field was applied by ZL201 alloy melt when it was cast in near-liquidus temperature. The effects of electromagnetic stirring power and cooling condition on microstructure were studied. The result showed that, by using electromagnetic field at near-liquidus temperature, alloy microstructures were the fine and uniform non-dendritic grains. Moreover, with current strength increasing and cooling condition strengthening, the trend of the fine and uniform reinforced. When ZL201 alloy was cast at low superheat, the radius of the critical nucleus reduced. Under electromagnetic field, the melt temperature gradient decreased, and the formation of quasi-solid phase atom clusters in the melt was promoted. So the nucleation rate increased and microstructures were fine and uniform. Electromagnetic field made solute uniform, and the rapidity of nucleus growing up in all directions was almost at the same rate, therefore, the grain grew up near-spherical shape.

信息:

期刊:

编辑:

Yansheng Yin and Xin Wang

页数:

1419-1422

DOI:

10.4028/www.scientific.net/AMR.79-82.1419

引用:

W. Ping and L. Tian, "The Microstructure of The Semi-Solid ZL201 Alloy Obtained by Near-Liquidus Electromagnetic Casting and the Fine Mechanism", Advanced Materials Research, Vols. 79-82, pp. 1419-1422, 2009

上线时间:

August 2009

输出:

价格:

$35.00

[1] Flemings M. C: Metall. Trans. A 22(1991)957-981.

[2] Spencer D B,Mehrabian R,Flemings M C: Metall Trans,1972; A3: (1925).

[3] S J Luo, W T Tian, S S Xie, W M Mao: The Chinese Journal of �onferrous Metals, 2000, 10(6): 765.

[4] Koren Z, Rosenson H, Gutman E M: Journal of Light Metals, 2002, (2): 81.

[5] G M Lu, J Dong, J Z Cui: The Chinese Journal of �onferrous Metals, 2001, 11(2): 211.

[6] H M Liu, Y Ren, J Liu, Q H Yao : Journal of Materials Engineering 2006(1): 3.

[7] J Dong, G M Lu, Q F Ren , J Z Cui: Acta metallurgica sinica, 2002,38(2): 203.

[8] G Y Yang, J W Qi, R Q Zhang, Q T He,J H Li: Rare Metal Materials and Engineering, 2007, 36(10): 1717.

[9] M Y Zhu, L P Xu, G J Shao, W Shi, Z M Ren, S L Yang: The Chinese Journal of �onferrous Metals, 2000, 10( 1): 150.

[10] J X Zhang, K Zhang, G J Liu, J Xu, L K Shi: The Chinese Journal of �onferrous Metals, 2000, 10(4): 511.

[11] K Zhang, G J Liu, J X Zhang: The Chinese Journal of �onferrous Metals, 2000, 10(1): 135.

[12] Z.D. Zhao, W .M. Mao: Acta Metallurgica Sinica, 2008, 21(2): 139-145.

为了查看相关信息, 需 Login.