Effect of High Magnetic Field on Phase Transformation of 7055 Alloy during Homogenization

Abstract:

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The microstructural evolutions of 7055 aluminum alloy after single and two-step homogenization with or without applying 12T high magnetic field were investigated. The as-cast microstructures of 7055 alloy consist of α+AlZnMgCu eutectics, Al7Cu2Fe phase and AlTiCuFe phase. During homogenization, coarse α+AlZnMgCu eutectics located at interdendritic region become smaller, discontinuous and spheroidized, some of them transform into Al2CuMg (S) having a higher melting point. High magnetic field significantly accelerates the dissolution of α+AlZnMgCu eutectics and S phase. The least amount of α+AlZnMgCu eutectics and S phase is obtained when the alloy homogenized at 4650C/10h+4850C/8h under 12T high magnetic field.

Info:

Periodical:

Advanced Materials Research (Volumes 189-193)

Edited by:

Zhengyi Jiang, Shanqing Li, Jianmin Zeng, Xiaoping Liao and Daoguo Yang

Pages:

4472-4476

DOI:

10.4028/www.scientific.net/AMR.189-193.4472

Citation:

L. Z. He et al., "Effect of High Magnetic Field on Phase Transformation of 7055 Alloy during Homogenization", Advanced Materials Research, Vols. 189-193, pp. 4472-4476, 2011

Online since:

February 2011

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Price:

$35.00

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