Mechanisms of reactive element Y on the purification of K4169 superalloy during vacuum induction melting |
| |
Authors: | Qing-ling Li Hua-rui Zhang Ming Gao Jin-peng Li Tong-xiao Tao Hu Zhang |
| |
Institution: | 1.School of Materials Science and Engineering,Beihang University,Beijing,China;2.Qingdao Institute of New Material Technology of Beihang University,Qingdao,China |
| |
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 ad-dition 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. |
| |
Keywords: | |
本文献已被 万方数据 SpringerLink 等数据库收录! |
| 点击此处可从《矿物冶金与材料学报》浏览原始摘要信息 |
| 点击此处可从《矿物冶金与材料学报》下载免费的PDF全文 |