• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Materials Science and Engineering >Correlation of local microstructures and mechanical properties of Al-Zn-Mg-Cu alloy build fabricated via underwater friction stir additive manufacturing
【24h】

Correlation of local microstructures and mechanical properties of Al-Zn-Mg-Cu alloy build fabricated via underwater friction stir additive manufacturing

机译：通过水下摩擦搅拌添加剂制造的Al-Zn-Mg-Cu合金构建局部微观结构和力学性能的相关性

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

This study used underwater friction stir additive manufacturing (FSAM) to fabricate a multilayered Al-Zn-Mg-Cu aluminum alloy build. The relationship between the local microstructures and mechanical properties for the water-cooled build was established. Consequently, the underwater FSAM effectively reduced the thermal cycle effect on the former FSAM pass during the FSAM process. The common phenomenon of microhardness decrease from top to bottom in the air-cooled build was suppressed. However, after aging treatment, a low-hardness zone (LHZ) was observed in the bottom of the pin-driven zone + pin-driven zone (PDZ + PDZ). A high-hardness zone (HHZ) was located in the shoulder-driven zone + pin-driven zone (SDZ + PDZ). Furthermore, the tensile properties in the bottom of the PDZ + PDZ were inferior to those in the SDZ + PDZ. The microstructural results show that, compared to the SDZ + PDZ, the higher density of the T (AlZnMgCu) and η (MgZn_2) phases precipitated in the bottom of the PDZ + PDZ, which was attributed to the finer grains and the higher density of subgrains and dislocations in this region. In addition, the peak temperature in the bottom of the PDZ + PDZ was in the range of the n-phase precipitation temperature, which also resulted in the increasing in the number of η phases. The high-density T- and η-phase precipitation in the bottom of the PDZ + PDZ implied a low-degree supersaturation, directly leading to the decrease of the aging-strengthening ability. In conclusion, low hardness and strength were observed in the bottom of the PDZ + PDZ after the aging treatment, whereas high hardness and strength were observed in the SDZ + PDZ because of the more efficient dissolution in this region.
机译：该研究使用水下摩擦搅拌添加剂制造（FSAM）制备多层Al-Zn-Mg-Cu铝合金构建。建立了局部微观结构与机械性能的关系。因此，水下FSAM在FSAM过程中有效地降低了前FSAM通过的热循环效应。抑制了在空气冷却的构建中从顶部到底部的微硬度下降的常见现象。然而，在老化处理之后，在销驱动区+销驱动区（PDZ + PDZ）的底部观察到低硬度区（LHz）。高硬度区（HHz）位于肩部驱动区域+销驱动区（SDZ + PDZ）中。此外，PDZ + PDZ底部的拉伸性质差不等于SDZ + PDZ中的那些。微观结构结果表明，与SDZ + PDZ相比，在PDZ + PDZ底部沉淀的T（alznmgcu）和η（MgZn_2）相的较高密度归因于细粒和更高的密度该地区的亚草和脱位。另外，PDZ + PDZ底部的峰值温度在正相沉淀温度的范围内，这也导致η相的数量增加。 PDZ + PDZ底部的高密度T-和η-相沉淀暗示了低度过饱和，直接导致衰老增强能力的降低。总之，在老化处理后，在PDZ + PDZ的底部观察到低硬度和强度，而在SDZ + PDZ中观察到高硬度和强度，因为该区域更有效溶解。

著录项

  • 来源
    《Materials Science and Engineering》 |2021年第23期|567-577|共11页
  • 作者

    Ying Li; Changshu He; Jingxun Wei; Zhiqiang Zhang; Gaowu Qin; Xiang Zhao;

  • 作者单位

    Key Laboratory for Anisotropy and Texture of Materials (MOE) School of Materials Science and Engineering Northeastern University Shenyang 110819 PR China;

    The State Key Laboratory of Rolling and Automation Northeastern University Shenyang 110819 PR China Research Center for Metallic Wires Northeastern University Shenyang 110819 PR China;

    Key Laboratory for Anisotropy and Texture of Materials (MOE) School of Materials Science and Engineering Northeastern University Shenyang 110819 PR China;

    Key Laboratory for Anisotropy and Texture of Materials (MOE) School of Materials Science and Engineering Northeastern University Shenyang 110819 PR China;

    Key Laboratory for Anisotropy and Texture of Materials (MOE) School of Materials Science and Engineering Northeastern University Shenyang 110819 PR China Research Center for Metallic Wires Northeastern University Shenyang 110819 PR China;

    Key Laboratory for Anisotropy and Texture of Materials (MOE) School of Materials Science and Engineering Northeastern University Shenyang 110819 PR China;

  • 收录信息
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Friction stir additive manufacturing; Water cooling; Al-Zn-Mg-Cu alloy; Microstructure; Mechanical property;

    机译：摩擦搅拌添加剂制造;水冷;Al-Zn-Mg-Cu合金;微观结构;机械性质;

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