...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Materials Science and Engineering >Laser powder bed fusion of advanced submicrometer TiB_2 reinforced high-performance Ni-based composite
【24h】

Laser powder bed fusion of advanced submicrometer TiB_2 reinforced high-performance Ni-based composite

机译：激光粉床融合先进的潜水仪TIB_2强化高性能NI基复合材料

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 Ni-based Hastelloy X (HX) superalloy is widely used in aero-engine components because of its exceptional high-temperature strength and oxidation resistance. Given the complex structure of such parts, additive manufacturing (AM) technologies such as laser powder bed fusion (LPBF) are employed to manufacture these components. HX alloy suffers from crack susceptibility during the LPBF process, however. In this paper, this issue was addressed by adding 2 wt% submicrometer TiB_2 powder through a high-speed mixing process. Both the low-angle grain boundaries (LAGBs) and high-angle grain boundaries (HAGBs) were noted to have increased in the as-fabricated HX-2 wt.% TiB_2 composite, with an average grain size reduction from 14 μm to 8.69 μm. In addition, compared with pure HX, the hardness of the HX-2 wt.% TiB_2 composite was increased by 43.4% and 50.8% at room-temperature and high-temperature (850 °C) conditions, respectively. This indicates that the added TiB_2 reinforcement was more influential to the mechanical property enhancement under high-temperature compared to the room temperature conditions. The composite sample also showed a 28% increase in yield strength while the ductility was not found to be sacrificed compared to the as-fabricated pure HX, indicating that an addition of specific ceramic particles with suitable content may offer a new method for manufacturing crack-free high-strength and high-toughness HX alloy through the AM process. These findings also provide a reference for improving the properties of other advanced materials made by the LPBF process.
机译：基于NI的HASTELLY X（HX）高温合金广泛用于航空发动机部件，因为其具有出色的高温强度和抗氧化性。鉴于这种部件的复杂结构，采用激光粉末融合（LPBF）等添加制造（AM）技术来制造这些部件。然而，HX合金在LPBF过程中遭受裂缝敏感性。在本文中，通过高速混合过程加入2wt％子变量计TIB_2粉末来解决该问题。低角度晶界（LAGBS）和高角度晶界（HAGBS）均在以制造的HX-2重量％增加，平均晶粒尺寸从14μm降至8.69μm 。另外，与纯HX相比，HX-2重量％的硬度分别在室温和高温（850℃）条件下增加43.4％和50.8％。这表明，与室温条件相比，添加的TIB_2增强件对高温的机械性能提高更具影响力。复合样品还表现出屈服强度增加28％，而没有发现与由制造的纯HX相比脱延性的延展性，表明具有合适含量的特定陶瓷颗粒可以提供一种用于制造裂缝的新方法 - 通过AM过程自由高强度和高韧性HX合金。这些发现还提供了改善LPBF过程所制作的其他先进材料的性能的参考。

著录项

  • 来源
    《Materials Science and Engineering》 |2021年第10期|141416.1-141416.16|共16页
  • 作者

    Zhenhua Zhang; Quanquan Han; Shengzhao Yang; Yingyue Yin; Jian Gao; Rossitza Setchi;

  • 作者单位

    Key Laboratory of High Efficiency and Clean Mechanical Manufacture of Ministry of Education Center for Additive Manufacturing School of Mechanical Engineering Shandong University Jinan 250061 China Key National Demonstration Center for Experimental Mechanical Engineering Education Shandong University Jinan 250061 China;

    Key Laboratory of High Efficiency and Clean Mechanical Manufacture of Ministry of Education Center for Additive Manufacturing School of Mechanical Engineering Shandong University Jinan 250061 China Key National Demonstration Center for Experimental Mechanical Engineering Education Shandong University Jinan 250061 China;

    Key Laboratory of High Efficiency and Clean Mechanical Manufacture of Ministry of Education Center for Additive Manufacturing School of Mechanical Engineering Shandong University Jinan 250061 China Key National Demonstration Center for Experimental Mechanical Engineering Education Shandong University Jinan 250061 China;

    Key Laboratory of High Efficiency and Clean Mechanical Manufacture of Ministry of Education Center for Additive Manufacturing School of Mechanical Engineering Shandong University Jinan 250061 China Key National Demonstration Center for Experimental Mechanical Engineering Education Shandong University Jinan 250061 China;

    Key Laboratory of High Efficiency and Clean Mechanical Manufacture of Ministry of Education Center for Additive Manufacturing School of Mechanical Engineering Shandong University Jinan 250061 China Key National Demonstration Center for Experimental Mechanical Engineering Education Shandong University Jinan 250061 China;

    Cardiff School of Engineering Cardiff University Cardiff CF24 3AA UK;

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

    Ni-based alloy; Additive manufacturing; Laser powder bed fusion; Composite; Cracking;

    机译：镍基合金;添加剂制造;激光粉床融合;合成的;开裂;

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