• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Philosophical Magazine Letters >High-resolution characterization of the precipitation behavior of an Al-Zn-Mg-Cu alloy
【24h】

High-resolution characterization of the precipitation behavior of an Al-Zn-Mg-Cu alloy

机译：Al-Zn-Mg-Cu合金析出行为的高分辨率表征

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 metastable particles in an Al-Zn-Mg-Cu alloy have been examined at atomic-resolution using high-angle annular dark field (HAADF) imaging. In under-aged conditions, thin η′ plates were formed with a thickness of seven atomic planes parallel to the {111}Al planes. The five inner planes of the η′ phase appear to be alternatively enriched in Mg and Zn, with two outer planes forming distinct Zn-rich interfacial planes. Similar Zn-rich interfacial enrichment has also been identified for the η phase, which is a minimum 11-plane thick structure. In rare instances, particles less than seven planes were found indicating a very early preference for seven-layer particle formation. Throughout the aging, the plate thickness appears constant, while the plate radius increases and no particles between 7 and 11 planes were observed. Based on the HAADF contrast, our observations do not support the η′ models previously set forth by other authors. Clear structural similarities between η′ and η were observed, suggesting that drawing distinctions between η′ and η phases may not be necessary or useful.View full textDownload full textKeywordsaluminum alloys, precipitation, metastable phases, high-angle annular dark field (HAADF), image simulationsRelated var addthis_config = { ui_cobrand: "Taylor & Francis Online", services_compact: "citeulike,netvibes,twitter,technorati,delicious,linkedin,facebook,stumbleupon,digg,google,more", pubid: "ra-4dff56cd6bb1830b" }; Add to shortlist Link Permalink http://dx.doi.org/10.1080/09500839.2011.652682
机译：已使用高角度环形暗场（HAADF）成像以原子分辨率检查了Al-Zn-Mg-Cu合金中的亚稳颗粒。在未成年人的条件下，形成薄的β板，其厚度平行于{111} Al 平面的七个原子平面。 β相的五个内部平面似乎交替地富含Mg和Zn，两个外部平面形成不同的富含Zn的界面平面。相似的富锌界面富集也被确定为α相，这是最小的11平面厚度的结构。在极少数情况下，发现少于七个平面的颗粒表明非常早就倾向于形成七层颗粒。在整个时效过程中，板厚看起来是恒定的，而板半径增加了，没有观察到7到11个平面之间的颗粒。基于HAADF的对比，我们的观察结果不支持先前由其他作者提出的β模型。观察到β和β之间存在明显的结构相似性，这表明β和β相之间的绘图区别可能没有必要或无用。查看全文下载全文关键词铝，沉淀，亚稳相，高-环形环形暗场（HAADF），图像模拟：“ ra-4dff56cd6bb1830b”};添加到候选列表链接永久链接http://dx.doi.org/10.1080/09500839.2011.652682

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