...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Journal of Materials Science >Correlation of microstructural, textural characteristics and hardness of Ti-6Al-4V sheet beta-cooled at different rates
【24h】

Correlation of microstructural, textural characteristics and hardness of Ti-6Al-4V sheet beta-cooled at different rates

机译：不同速率下Ti-6AL-4Vβ-Coolded的微观结构，纹理特征和硬度的相关性

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

In this work, a hot-rolled Ti-6Al-4V (Ti-64) sheet was annealed at 1050 degrees C (beta field) and then subjected to different coolings (in water, air and furnace). Electron backscatter diffraction, electron channeling contrast imaging, energy-dispersive spectroscopy and X-ray diffraction techniques were jointly utilized to comprehensively reveal microstructural and textural characteristics of the specimens following various beta-cooling rates. Hardness measurements were also performed to probe the hardness variation associated with the beta-cooling rates and were further rationalized based on the revealed microstructures. Results show that the beta-cooled specimens in water, air and furnace exhibited twinned martensite, basket-weave and parallel-plate Widmanstatten structures, respectively. The Burgers orientation relationship is always obeyed during the beta -> alpha transformation at all cooling rates. After phase transformation, major alpha texture components ((0 degrees, 60 degrees, 0 degrees), (90 degrees, 30 degrees, 30 degrees) and (90 degrees, 90 degrees, 30 degrees)) are completely different from those of the as-received material ((0 degrees, 90 degrees, 0 degrees) and (90 degrees, 30 degrees, 0 degrees)). Slow cooling facilitates preferable nucleation of alpha phases at prior beta boundaries and strengthens alpha-variant selection, leading to greatly intensified transformation texture (the maximum density from 9.5 to 31.1 times of random). Hardness values of the beta-cooled specimens drop from 416.8 +/- 4.3 HV for water cooling to 329.2 +/- 23.6 HV for furnace cooling. Quantitative calculations suggest such hardness variation can be more related to differences in grain size between them, as compared to specific contributions from other microstructural and textural characteristics.
机译：在这项工作中，在1050℃（β场）下退火热轧Ti-6Al-4V（Ti-64）片，然后进行不同的冷却（在水，空气和炉中）。电子反向散射衍射，电子通道对比度成像，能量分散光谱和X射线衍射技术共同利用，以全面地揭示各种β冷却速率术后标本的微观结构和纹理特征。还进行硬度测量以探测与β冷却速率相关的硬度变化，并且基于揭示的微观结构进一步合理地进行了合理的。结果表明，水，空气和炉中的β冷却标本分别显示出孪生马氏体，篮子编织和平行板WidmanStatten结构。在所有冷却速率的β - > alpha转换期间，汉堡方向关系总是服从。在相变之后，主要alpha纹理分量（（0度，60度，0度），（90度，30度，30度）和（90度，90度，30度）与AS的完全不同 - 重复的材料（（0度，90度，0度）和（90度，30度，0度））。缓慢冷却有助于在先前的β边界处促进α阶段的优选成核，并强化α-变异选择，导致大大加强的转化纹理（最大密度为0.5至31.1次的随机性）。 β冷却样品的硬度值从416.8 +/- 4.3 HV下降，用于水冷却至329.2 +/- 23.6 HV，用于炉冷却。定量计算表明，与来自其他微观结构和纹理特征的特定贡献相比，这些硬度变化可能与它们之间的晶粒尺寸的差异有关。

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