• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Materials Science and Engineering >The synergetic effect of Si and Sc on the thermal stability of the precipitates in AlCuMg alloy
【24h】

The synergetic effect of Si and Sc on the thermal stability of the precipitates in AlCuMg alloy

机译：Si和Sc对AlCuMg合金中析出物热稳定性的协同作用

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

The effect of Si and Sc on the evolution of the precipitates during aging in Al4.0Cu0.5 Mg alloys was investigated by means of microhardness tests and transmission electron microscope. The results show that Si can significantly refine the size of θ' phases, because addition of Si introduces a considerable amount of small, uniformly dispersed Al-Cu-Mg-Si (Q) quaternary phases, which provides nucleation sites for the θ' phases. Sc atoms segregate at the interfaces between the matrix and the θ'-Al_2Cu precipitates in AlCuMgSiSc alloy. The segregation of Sc atoms inhibits the growth of the θ' phases and improves the thermal stability of the θ' phases. At the same time, the segregation of Sc atoms in Q phases restrains the coarsening of the Q phases, which also contributes to the thermal stability of the θ' phases. The co-addition of Si and Sc thus leads to a combination of high strength and high thermal stability of the Al-Cu-Mg-Si-Sc alloy.
机译：通过显微硬度测试和透射电镜研究了Si和Sc对Al4.0Cu0.5 Mg合金时效过程中析出相的影响。结果表明，Si可以显着改善θ'相的尺寸，因为添加Si会引入大量小的，均匀分散的Al-Cu-Mg-Si（Q）四元相，从而为θ'相提供成核点。 Sc原子在AlCuMgSiSc合金中与θ'-Al_2Cu析出物之间的界面处偏析。 Sc原子的偏析抑制了θ′相的生长并改善了θ′相的热稳定性。同时，Sc原子在Q相中的偏析抑制了Q相的粗化，这也有助于θ′相的热稳定性。因此，Si和Sc的共添加导致Al-Cu-Mg-Si-Sc合金的高强度和高热稳定性的组合。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号