| 应力/电场耦合作用对2524铝合金时效动力学影响 |
| |
| 引用本文： | 王 琪,傅 上,王 斌,易丹青.应力/电场耦合作用对2524铝合金时效动力学影响[J].稀有金属材料与工程,2015,44(4):966-971. |
| |
| 作者姓名： | 王 琪 傅 上 王 斌 易丹青 |
| |
| 作者单位： | 中南大学，湖南 长沙 410083 |
| |
| 基金项目： | 国家自然科学基金资助 (51071177)；国家重点基础研究发展计划（“973”计划）(2012CB619506)；有色金属先进结构材料与制造协同创新中心 |
| |
| 摘 要： | 采用差热分析仪(DSC)、透射电子显微镜(TEM)等分析手段,研究应力/电场耦合时效后2524合金的DSC的曲线特征和微观组织。结果表明:与无外场时效(190℃/5 h)样品相比,施加25~130 MPa应力时效后,2524铝合金中S相析出体积分数升高,析出速率提高30%,S相的形成激活能降低55 k J/mol;施加130 MPa+16 k V/cm耦合外场时效后,S相激活能仅降低了38 k J/mol。
|
| 关 键 词： | 2524铝合金 应力 电场 时效 DSC |
| 收稿时间： | 2014/4/21 0:00:00 |
Effect of Stress Coupled with Electric Field on Aging Dynamics of |
| |
| Wang Qi,Fu Shang,Wang Bin and Yi Danqing.Effect of Stress Coupled with Electric Field on Aging Dynamics of[J].Rare Metal Materials and Engineering,2015,44(4):966-971. |
| |
| Authors: | Wang Qi Fu Shang Wang Bin and Yi Danqing |
| |
| Affiliation: | Central South University, Changsha 410083, China |
| |
| Abstract: | The DSC curve characteristic and microstructure of 2524 aluminum alloy after stress coupled with electric field aging were investigated using Differential Scanning Calorimetry (DSC) and transmission electron microscopy (TEM), respectively. The results show that comparing to the alloy after aging at 190 oC/5 h without either external stress or electric field, the volume fraction of precipitated S phase increases in the sample after 25~130 MPa aging, the precipitation rate is increased by 30%, and the activation energy of S phase formation is decreased by 55 kJ/mol, while that of the alloy after aging under 130 MPa coupled with 16 kV/cm is decreased by only 38 kJ/mol |
| |
| Keywords: | 2524 aluminum alloy stress electric field aging DSC |
| 本文献已被 CNKI 等数据库收录！ |
| 点击此处可从《稀有金属材料与工程》浏览原始摘要信息 |
|
点击此处可从《稀有金属材料与工程》下载全文 |
|
