Relationship between eta phase formation and solidification rate in directionally solidified IN792 plus Hf alloy
文献类型：期刊论文
| 作者 | W. R. Sun ; J. H. Lee ; S. M. Seo ; S. J. Choe ; Z. Q. Hu |
| 刊名 | Materials Science and Technology
 |
| 出版日期 | 1999 |
| 卷号 | 15期号:11页码:1221-1224 |
| 关键词 | superalloy |
| ISSN号 | 0267-0836 |
| 中文摘要 | The effect of solidification rate on the formation of eta phase in a directionally solidified IN792 + Hf super alloy was studied. A Cr rich 'precipitate free zone' adjacent to the eutectic (gamma + gamma') was noticed in the quenched directionally solidified microstructure of the alloy. The formation of the precipitate free zone Mras due to the solidification of eutectic (gamma + gamma') which consumed a large amount of the gamma' forming elements and increased the ratio of (Ti + Hf + Ta + W)/Al in the residual liquid. The high ratio of(Ti + Hf + Ta + W)/Al in the final residual liquid induced the formation of eta phase and hence eta phase always appeared at the boundary between the eutectic regions and the dendrite core regions. The ratio of (Ti + Hf + Ta + W)/Al was decreased by the diffusion of elements between the residual liquid and the surrounding ai ea. A lower solidification rate favoured the back diffusion and decreased the ratio of (Ti + Hf + Ta + W)/Al in the residual liquid and hence reduced the formation of eta phase. MST/4279. |
| 原文出处 | |
| 公开日期 | 2012-04-14 |
| 源URL | [http://ir.imr.ac.cn/handle/321006/37496]  |
| 专题 | 金属研究所_中国科学院金属研究所 |
| 推荐引用方式 GB/T 7714 | W. R. Sun,J. H. Lee,S. M. Seo,et al. Relationship between eta phase formation and solidification rate in directionally solidified IN792 plus Hf alloy[J]. Materials Science and Technology,1999,15(11):1221-1224. |
| APA | W. R. Sun,J. H. Lee,S. M. Seo,S. J. Choe,&Z. Q. Hu.(1999).Relationship between eta phase formation and solidification rate in directionally solidified IN792 plus Hf alloy.Materials Science and Technology,15(11),1221-1224. |
| MLA | W. R. Sun,et al."Relationship between eta phase formation and solidification rate in directionally solidified IN792 plus Hf alloy".Materials Science and Technology 15.11(1999):1221-1224. |
入库方式： OAI收割
来源：金属研究所
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