Effects of RRA treatments on microstructures and properties of a new high-strength aluminum-lithium alloy-2A97
文献类型：期刊论文
| 作者 | Yuan Zhishan2; Lu Zheng1; Xie Youhua1; Dai Shenglong1; Liu Changsheng2 |
| 刊名 | CHINESE JOURNAL OF AERONAUTICS
 |
| 出版日期 | 2007 |
| 卷号 | 20期号:2页码:187-192 |
| 关键词 | FRACTURE-TOUGHNESS RETROGRESSION BEHAVIOR 2A97 Al-Cu-Li-X alloy RRA treatments triple aging microstructure reversion |
| ISSN号 | 1000-9361 |
| 其他题名 | Effects of RRA Treatments on Microstructures and Properties of a New High-strength Aluminum-Lithium Alloy-2A97 |
| 英文摘要 | A new high strength 2A97 Al-Cu-Li-X alloy was subjected to triple-aging of retrogression and re-aging treatments (RRA). Transmission electron microscopy (TEM), differential scanning calorimetry (DSC), and tensile tests were used to investigate the effects of RRA treatment on the microstructures and properties. DSC test reveals the reversion temperature range of the strengthening delta' (Al3Li) phase. The results show that the microstructure consists of delta' (Al3Li) phase, T-1 (Al2CuLi) phase and theta ''/theta' (Al2Cu) phase for 2A97 alloy treated by a triple-aging of a retrogression and re-aging treatment in the following order: (1) at 165 degrees C x 30 min, (2) at 220 degrees C or 240 degrees C x 15 min, (3) at 165 degrees C x 24 h. The plastic deformation, incorporated into the treatment after secondary high temperature aging, promotes the T-1 precipitation during final re-aging. The tensile properties of the alloy treated by the retrogression and re-aging treatment reach the peak level of alloy single-aged at 165 degrees C in T6 temper. |
| 语种 | 英语 |
| CSCD记录号 | CSCD:2911964 |
| 源URL | [http://ir.imr.ac.cn/handle/321006/147166]  |
| 专题 | 金属研究所_中国科学院金属研究所 |
| 作者单位 | 1.Beijing Institute Aeronaut Mat, Beijing 100095, Peoples R China 2.中国科学院金属研究所 |
| 推荐引用方式 GB/T 7714 | Yuan Zhishan,Lu Zheng,Xie Youhua,et al. Effects of RRA treatments on microstructures and properties of a new high-strength aluminum-lithium alloy-2A97[J]. CHINESE JOURNAL OF AERONAUTICS,2007,20(2):187-192. |
| APA | Yuan Zhishan,Lu Zheng,Xie Youhua,Dai Shenglong,&Liu Changsheng.(2007).Effects of RRA treatments on microstructures and properties of a new high-strength aluminum-lithium alloy-2A97.CHINESE JOURNAL OF AERONAUTICS,20(2),187-192. |
| MLA | Yuan Zhishan,et al."Effects of RRA treatments on microstructures and properties of a new high-strength aluminum-lithium alloy-2A97".CHINESE JOURNAL OF AERONAUTICS 20.2(2007):187-192. |
入库方式： OAI收割
来源：金属研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。