Solidification Segregation Behavior and Homogenization Heat Treatment of GH4151 Alloy
文献类型：期刊论文
| 作者 | Gai Yongchao1; Zhang Rui1; Zhou Zijian1; Lv Shaomin2,3; Cui Chuanyong1; Qu Jinglong2,3 |
| 刊名 | RARE METAL MATERIALS AND ENGINEERING
 |
| 出版日期 | 2024 |
| 卷号 | 53期号:1页码:159-168 |
| 关键词 | wrought superalloy solidification segregation harmful phases homogenization |
| ISSN号 | 1002-185X |
| DOI | 10.12442/j.issn.1002-185X.20220996 |
| 通讯作者 | Zhang Rui(rzhang@imr.ac.cn) |
| 英文摘要 | GH4151 alloy is a new type of casting and deformation superalloy of turbine disk with the temperature bearing capacity up to 800 degrees C. The alloy has severe elemental segregation during solidification, and main segregation elements include Nb, Ti and Mo. Meanwhile, the alloy contains a large amount of element C. In the late stages of solidification, due to the enrichment of elements in the residual liquid phase, a large number of harmful phases, including (gamma-gamma ') eutectic, Laves phase, eta phase and MC carbides, precipitate between the dendrites. The influence of C content in the GH4151 alloy on the segregation elements was investigated. Result show that increasing C content can reduce the segregation of Nb elements between dendrites. In addition, with the increase in C content, the dendrites become more developed and the interdendrite area decreases. The effects of homogenization heat treatment were studied at different temperatures from 1160 degrees C to 1210 degrees C. The melting points of (gamma-gamma ') eutectic and Laves phases are about 1180 degrees C, that of eta phase is about 1200 degrees C and that of MC carbide is higher than 1300 degrees C. At the same time, it is found that the 1170 degrees C/16 h+1200 degrees C/8 h double step homogenization heat treatment can not only eliminate the segregation in the ingot, but also avoid the holes caused by the overburning of the low melting point phases, which makes the billet more conducive to the subsequent billet deformation. |
| WOS研究方向 | Materials Science ; Metallurgy & Metallurgical Engineering |
| 语种 | 英语 |
| WOS记录号 | WOS:001191464400018 |
| 出版者 | NORTHWEST INST NONFERROUS METAL RESEARCH |
| 源URL |  |
| 专题 | 金属研究所_中国科学院金属研究所 |
| 通讯作者 | Zhang Rui |
| 作者单位 | 1.Chinese Acad Sci, Inst Met Res, Shi changxu Innovat Ctr Adv Mat, Shenyang 110016, Peoples R China 2.Cent Iron & Steel Res Inst, Hightemp Mat Div, Beijing 100081, Peoples R China 3.Beijing CISRI GAONA Mat & Technol Co Ltd, Beijing 100081, Peoples R China |
| 推荐引用方式 GB/T 7714 | Gai Yongchao,Zhang Rui,Zhou Zijian,et al. Solidification Segregation Behavior and Homogenization Heat Treatment of GH4151 Alloy[J]. RARE METAL MATERIALS AND ENGINEERING,2024,53(1):159-168. |
| APA | Gai Yongchao,Zhang Rui,Zhou Zijian,Lv Shaomin,Cui Chuanyong,&Qu Jinglong.(2024).Solidification Segregation Behavior and Homogenization Heat Treatment of GH4151 Alloy.RARE METAL MATERIALS AND ENGINEERING,53(1),159-168. |
| MLA | Gai Yongchao,et al."Solidification Segregation Behavior and Homogenization Heat Treatment of GH4151 Alloy".RARE METAL MATERIALS AND ENGINEERING 53.1(2024):159-168. |
入库方式： OAI收割
来源：金属研究所
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