Casting Solidification Behavior of Bimuth in Free-Cutting Copper Alloy

Abstract:

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Effect of bismuth on the microstructure and performance of Cu-Se-Bi brass were studied. The microstructure analysis and fracture observation indicated that the content of bismuth has obvious effect on the foundry property of Cu-Se-Bi brass. The bismuth distributes on the boundary of α and β phrase and when the content of bismuth is below 1.0wt%,bismuth freezes on the phrase boundary in form of granule; when the content of bismuth amounts to 2.0wt%,bismuth presents in form of blocks; while when the content of bismuth is beyond 2.5wt%,bismuth lies on the phrase boundary in form of continuous films. The solidification mechanism of bismuth in Cu-Se-Bi brass was discussed through the thermodynamics analysis.

Info:

Periodical:

Advanced Materials Research (Volumes 189-193)

Edited by:

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

Pages:

3941-3944

DOI:

10.4028/www.scientific.net/AMR.189-193.3941

Citation:

B. X. Liu and L. N. Zhang, "Casting Solidification Behavior of Bimuth in Free-Cutting Copper Alloy", Advanced Materials Research, Vols. 189-193, pp. 3941-3944, 2011

Online since:

February 2011

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$35.00

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