| 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 | |
| Corresponding Author | Ma, Zong-Yi(zyma@imr.ac.cn) |
| 2020-06-01 | |
| Source Publication | RARE METALS
 |
| ISSN | 1001-0521 |
| Volume | 39Issue:6Pages:725-732 |
| Abstract | 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. |
| Keyword | Al alloy Sc addition Microstructure Mechanical properties |
| DOI | 10.1007/s12598-018-1190-z |
| Indexed By | SCI |
| Language | 英语 |
| WOS Research Area | Materials Science ; Metallurgy & Metallurgical Engineering |
| WOS Subject | Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering |
| WOS ID | WOS:000538372800014 |
| Publisher | NONFERROUS METALS SOC CHINA |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.imr.ac.cn/handle/321006/139364 |
| Collection | 中国科学院金属研究所 |
| Corresponding Author | Ma, Zong-Yi |
| Affiliation | 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 |
| Recommended Citation 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. |
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