Mechanisms of reactive element Y on the purification of K4169 superalloy during vacuum induction melting

Qing-ling Li; Hua-rui Zhang; Ming Gao; Jin-peng Li; Tong-xiao Tao; Hu Zhang

doi:10.1007/s12613-018-1617-4

Volume 25 Issue 6

Jun. 2018

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文章导航 > 矿物冶金与材料学报（英文） > 2018 > 25(6): 696-703

Qing-ling Li, Hua-rui Zhang, Ming Gao, Jin-peng Li, Tong-xiao Tao, and Hu Zhang, Mechanisms of reactive element Y on the purification of K4169 superalloy during vacuum induction melting, Int. J. Miner. Metall. Mater., 25(2018), No. 6, pp. 696-703. https://doi.org/10.1007/s12613-018-1617-4

Cite this article as:

Qing-ling Li, Hua-rui Zhang, Ming Gao, Jin-peng Li, Tong-xiao Tao, and Hu Zhang, Mechanisms of reactive element Y on the purification of K4169 superalloy during vacuum induction melting, Int. J. Miner. Metall. Mater., 25(2018), No. 6, pp. 696-703. https://doi.org/10.1007/s12613-018-1617-4

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研究论文

Mechanisms of reactive element Y on the purification of K4169 superalloy during vacuum induction melting

School of Materials Science and Engineering, Beihang University, Beijing 100191, China
Qingdao Institute of New Material Technology of Beihang University, Qingdao 266000, China

通讯作者:
Hua-rui Zhang E-mail: huarui@buaa.edu.cn

Hu Zhang E-mail: zhanghu@buaa.edu.cn

中文摘要

The effects of rare earth element Y on the purification of K4169 superalloy during vacuum induction melting were investigated at different superheating temperatures. The corresponding interaction mechanisms were also clarified. Results showed that the addition of Y remarkably promoted the purification effect on the K4169 melt. The contents of O and S in the K4169 as-cast alloy ingots after purification were 3–4 and 8–10 ppm, respectively. The degrees of deoxidation and desulfurization increased to 50% and 57%, respectively, upon the addition of 0.1wt% Y. The yttrium-rich phase that precipitated at the grain boundary blocked the diffusion of C and the accumulation of S, thereby contributing to the purification of the alloy.

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Research Article

Mechanisms of reactive element Y on the purification of K4169 superalloy during vacuum induction melting

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Abstract

Abstract

The effects of rare earth element Y on the purification of K4169 superalloy during vacuum induction melting were investigated at different superheating temperatures. The corresponding interaction mechanisms were also clarified. Results showed that the addition of Y remarkably promoted the purification effect on the K4169 melt. The contents of O and S in the K4169 as-cast alloy ingots after purification were 3–4 and 8–10 ppm, respectively. The degrees of deoxidation and desulfurization increased to 50% and 57%, respectively, upon the addition of 0.1wt% Y. The yttrium-rich phase that precipitated at the grain boundary blocked the diffusion of C and the accumulation of S, thereby contributing to the purification of the alloy.
- K4169 superalloy;
- deoxidation;
- desulfurization;
- yttrium;
- vacuum induction melting;
- mechanism

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Mechanisms of reactive element Y on the purification of K4169 superalloy during vacuum induction melting

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Mechanisms of reactive element Y on the purification of K4169 superalloy during vacuum induction melting

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