A New Al-ZnS Master Alloy Designed for Modifying Hypereutectic Al-Si Alloy and its Refinement Performance on Primary Si

Cheng Dong Li; Wen Qiang Si; Mei Zhao; Chuan Hao Sun; Xiao Song Guo

doi:10.4028/www.scientific.net/AMR.1088.242

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HomeAdvanced Materials ResearchAdvanced Materials Research Vol. 1088A New Al-ZnS Master Alloy Designed for Modifying...

A New Al-ZnS Master Alloy Designed for Modifying Hypereutectic Al-Si Alloy and its Refinement Performance on Primary Si

Abstract:

To increase the industrial applicability of hypereutectic Al-Si alloys, various methods have been used to refine primary silicon. The addition and refinement effects of phosphorus (P), rare earth metals (RE) on primary Si have been studied widely, But they have been testified be with some disadvantages, that is, the pollution to the environment of P and the high cost of RE, etc. Now, a new refiner - ZnS and the corresponding processing technology were researched. Microstructures of hypereutectic Al-Si alloy (Si wt. 24%) with fine primary Si were successfully obtained. And the primary Si can be refined from more than 80μm to 20μm. And the distribution of primary silicon is getting more uniform.

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Periodical:

Advanced Materials Research (Volume 1088)

Pages:

242-244

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.1088.242

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Online since:

February 2015

Authors:

Cheng Dong Li, Wen Qiang Si, Mei Zhao*, Chuan Hao Sun, Xiao Song Guo

Keywords:

Hypereutectic Al - Si Alloy, Primary Si, Refinement, ZnS

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