• 主题
高级搜索  >
历史搜索 清空历史
首页> 美国卫生研究院文献>Materials >Grain Boundary Character Dependence on Nucleation of Discontinuous Precipitates in Cu-Ti Alloys
【2h】

Grain Boundary Character Dependence on Nucleation of Discontinuous Precipitates in Cu-Ti Alloys

机译：Cu-Ti合金中断续晶核形貌的晶界特征

代理获取
本网站仅为用户提供外文OA文献查询和代理获取服务，本网站没有原文。下单后我们将采用程序或人工为您竭诚获取高质量的原文，但由于OA文献来源多样且变更频繁，仍可能出现获取不到、文献不完整或与标题不符等情况，如果获取不到我们将提供退款服务。请知悉。
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

The dependence of the grain boundary character distribution for a Cu-4 at. % Ti polycrystal alloy (average grain size: 100 µm) on the nucleation of cellular discontinuous precipitates was systematically investigated. In an alloy over-aged at 723 K, cellular discontinuous precipitates consisted of a terminal Cu solid solution and a stable β-Cu4Ti lamellae nucleated at grain boundaries. Electron backscatter diffraction analysis revealed that the discontinuous precipitation reaction preferentially occurred at random grain boundaries with a Σ value of more than 21 according to the coincidence site lattice theory. On the other hand, few cellular discontinuous precipitates nucleated at low-angle and low-Σ boundaries, particularly twin (Σ 3) boundaries. These findings suggest that the nucleation of discontinuous precipitates is closely correlated with grain boundary character and structure, and hence energy and/or diffusibility. It should therefore be possible to suppress the discontinuous precipitation reaction through control of the alloy’s grain boundary energy, by means of texture control and third elemental addition.
机译：Cu-4 at的晶界特征分布的依赖性。对细胞不连续沉淀物成核的％Ti多晶合金（平均晶粒尺寸：100 µm）进行了系统研究。在723 K时效过时的合金中，蜂窝状不连续析出物由末端Cu固溶体和在晶界成核的稳定的β-Cu4Ti薄片组成。电子背散射衍射分析表明，根据重合点晶格理论，不连续沉淀反应优先发生在无规晶界，其Σ值大于21。另一方面，几乎没有细胞间断的沉淀物在低角度和低Σ边界处成核，尤其是孪生（Σ3）边界。这些发现表明，不连续析出物的形核与晶界特征和结构密切相关，因此与能量和/或扩散性密切相关。因此，应该可以通过组织控制和第三元素添加来控制合金的晶界能，从而抑制不连续的析出反应。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
代理获取

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