...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Journal of Materials Research >Mechanical behavior of a DD5 single crystal superalloy with different misorientations under quasi-static and dynamic compression
【24h】

Mechanical behavior of a DD5 single crystal superalloy with different misorientations under quasi-static and dynamic compression

机译：在准静态和动态压缩下具有不同取向错误的DD5单晶高温合金的力学行为

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 effects of misorientation on the quasi-static and dynamic mechanical behaviors of a second generation Ni-based single crystal superalloy DD5 were investigated. A Split-Hopkinson pressure bar system was used to perform dynamic compression. The crystallographic misorientation between the stress axis and the [001] direction was characterized through rotating orientation X-ray diffraction. The results demonstrated that the flow stress was closely related to the misorientation. It decreased first and consequently increased as the misorientation increased from 0 degrees to 45 degrees. The dynamic flow stress was significantly higher than the quasi-static stress. Moreover, the flow stress under dynamics was more sensitive to the misorientation. A constitutive model was used to illustrate the misorientation effect on the mechanical behavior. Finally, the effect of strain rate on the crystal orientation was also investigated. It was discovered that the orientation deviation change following quasi-static compression could be neglected. By contrast, the orientation changed by 3-9 degrees subsequently to dynamic compression.
机译：研究了取向错误对第二代镍基单晶高温合金DD5的准静态和动态力学行为的影响。使用Split-Hopkinson压力杆系统执行动态压缩。通过旋转取向X射线衍射表征了应力轴和[001]方向之间的结晶学取向不良。结果表明，流动应力与取向错误密切相关。随着方向错误从0度增加到45度，它首先减少，然后增加。动态流应力明显高于准静态应力。此外，动力学下的流动应力对取向错误更敏感。本构模型用于说明取向错误对机械性能的影响。最后，还研究了应变速率对晶体取向的影响。发现可以忽略准静态压缩后的取向偏差变化。相反，在动态压缩之后，方向改变了3-9度。

著录项

  • 来源
    《Journal of Materials Research》 |2018年第18期|2796-2805|共10页
  • 作者

    Liu Zhenpeng; Zhong Hong; Wang Yumin; Li Shuangming; Fu Hengzhi;

  • 作者单位

    Northwestern Polytech Univ, State Key Lab Solidificat Proc, Xian 710072, Shaanxi, Peoples R China;

    Northwestern Polytech Univ, State Key Lab Solidificat Proc, Xian 710072, Shaanxi, Peoples R China;

    Northwestern Polytech Univ, State Key Lab Solidificat Proc, Xian 710072, Shaanxi, Peoples R China;

    Northwestern Polytech Univ, State Key Lab Solidificat Proc, Xian 710072, Shaanxi, Peoples R China;

    Northwestern Polytech Univ, State Key Lab Solidificat Proc, Xian 710072, Shaanxi, Peoples R China;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    alloy; stress; strain relationship; crystalline;

    机译：合金;应力;应变关系;结晶;

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