| Mechanical properties and thermal stability of 7055 Al alloy by minor Sc addition | |
| Liu, Chong-Yu1,2; Teng, Guang-Biao1; Ma, Zong-Yi2; Wei, Li-Li1; Zhou, Wen-Biao3; Huang, Hong-Feng1; Qi, Hai-Quan1 | |
| 通讯作者 | Ma, Zong-Yi(zyma@imr.ac.cn) |
| 2020-06-01 | |
| 发表期刊 | RARE METALS
 |
| ISSN | 1001-0521 |
| 卷号 | 39期号:6页码:725-732 |
| 摘要 | This study investigated the effect of 0.25 wt% Sc addition on the microstructure and mechanical properties of AA 7055 alloy. The addition of Sc obviously refined the grains of AA 7055 alloy during casting, homogenizing, rolling, solution, and aging treatments due to the formation of primary and precipitate Al-3(Sc,Zr) phase. The recrystallization and precipitation of AA 7055 alloy were inhibited during heat treatments by Sc addition. The Sc-containing AA 7055 alloy exhibited higher thermal stability than AA 7055 alloy during homogenizing treatment, because of the grain boundary pinning effect of nano-sized Al-3(Sc,Zr) particles. Given its structure characteristics such as fine grains, fine eta ' phase, and less eta phase, AA 7055 alloy with added Sc showed good mechanical properties after aging at 120 degrees C for 24 h, with an ultimate tensile strength (UTS) of 679 MPa and elongation (EL) of 14%. This work provides an effective strategy to fabricate Al-Zn-Mg(-Cu) series (7xxx) alloys with excellent mechanical properties. |
| 关键词 | Al alloy Sc addition Microstructure Mechanical properties |
| DOI | 10.1007/s12598-018-1190-z |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS研究方向 | Materials Science ; Metallurgy & Metallurgical Engineering |
| WOS类目 | Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering |
| WOS记录号 | WOS:000538372800014 |
| 出版者 | NONFERROUS METALS SOC CHINA |
| 引用统计 | |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://ir.imr.ac.cn/handle/321006/139364 |
| 专题 | 中国科学院金属研究所 |
| 通讯作者 | Ma, Zong-Yi |
| 作者单位 | 1.Guilin Univ Technol, Key Lab New Proc Technol Nonferrous Met & Mat, Minist Educ, Guilin 541004, Peoples R China 2.Chinese Acad Sci, Shenyang Natl Lab Mat Sci, Inst Met Res, Shenyang 110016, Peoples R China 3.Alnan Aluminium Co Ltd, Nanning 530000, Peoples R China |
| 推荐引用方式 GB/T 7714 | Liu, Chong-Yu,Teng, Guang-Biao,Ma, Zong-Yi,et al. Mechanical properties and thermal stability of 7055 Al alloy by minor Sc addition[J]. RARE METALS,2020,39(6):725-732. |
| APA | Liu, Chong-Yu.,Teng, Guang-Biao.,Ma, Zong-Yi.,Wei, Li-Li.,Zhou, Wen-Biao.,...&Qi, Hai-Quan.(2020).Mechanical properties and thermal stability of 7055 Al alloy by minor Sc addition.RARE METALS,39(6),725-732. |
| MLA | Liu, Chong-Yu,et al."Mechanical properties and thermal stability of 7055 Al alloy by minor Sc addition".RARE METALS 39.6(2020):725-732. |
| 条目包含的文件 | 条目无相关文件。 | |||||
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