| 7A52铝合金厚板搅拌摩擦焊接头性能研究 |
| |
| 引用本文： | 刘红伟,周琦,朱军,宋建民.7A52铝合金厚板搅拌摩擦焊接头性能研究[J].兵器材料科学与工程,2006,29(3):57-60. |
| |
| 作者姓名： | 刘红伟 周琦 朱军 宋建民 |
| |
| 作者单位： | 中国兵器科学研究院,宁波分院,浙江,宁波,315103;中国兵器科学研究院,宁波分院,浙江,宁波,315103;中国兵器科学研究院,宁波分院,浙江,宁波,315103;中国兵器科学研究院,宁波分院,浙江,宁波,315103 |
| |
| 摘 要： | 采用搅拌摩擦焊工艺对20mm厚的7A52铝合金进行了焊接,用金相显微镜、扫描电镜等分析测试手段,分析了焊接接头的组织与性能。研究表明:20mm厚的7A52铝合金,在合理的工艺参数下,接头强度可达母材的87%;焊核区发生动态再结晶,生成细小的等轴晶粒。断口分析表明,搅拌摩擦焊接头断口为明显的韧窝形貌,并用位错理论解释了微观断裂机制。
|
| 关 键 词： | 7A52铝合金 搅拌摩擦焊 动态再结晶 断裂机制 |
| 文章编号： | 1004-244X（2006）03-0057-04 |
| 收稿时间： | 2005-11-18 |
| 修稿时间： | 2006-03-16 |
Research on joint properties of 7A52 aluminum alloy thick plate by friction stir welding |
| |
| LIU Hong-wei,ZHOU Qi,ZHU Jun,SONG Jian-min.Research on joint properties of 7A52 aluminum alloy thick plate by friction stir welding[J].Ordnance Material Science and Engineering,2006,29(3):57-60. |
| |
| Authors: | LIU Hong-wei ZHOU Qi ZHU Jun SONG Jian-min |
| |
| Affiliation: | Ningbo Branch of China Academy of Ordnance Science, Ningbo 315103, China |
| |
| Abstract: | The friction stir welding process is used to weld 20 mm thick 7A52 aluminum alloy. The joint properties and structure are analyzed by means of optical microscope and SEM etc. The results show that 7A52 aluminum alloy can be welded successfully with correct parameters. The yield strength of welded joint reaches 87% of that of parent materials. Dynamic recrystallization takes place in the weld nugget zone and fine grains are achieved. The tensile fracture of FSW appears to be dimple and the fracture mechanism is analyzed through dislocation theory. |
| |
| Keywords: | 7A52 aluminum alloy friction stir welding dynamic recrystaUization fracture mechanism |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
|
