...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>JOM >Effect of Aluminum Content on Microstructure and Mechanical Properties of Al_xCoCrFeMo_(0.5)Ni High-Entropy Alloys
【24h】

Effect of Aluminum Content on Microstructure and Mechanical Properties of Al_xCoCrFeMo_(0.5)Ni High-Entropy Alloys

机译：铝含量对Al_xCoCrFeMoMo_（0.5）Ni高熵合金组织和力学性能的影响

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

High-entropy alloys Al_xCoCrFeMo_(0.5)Ni with varied Al contents (x = 0, 0.5, 1.0, 1.5, and 2.0) have been designed based on the Al_xCoCrCuFeNi system to improve mechanical properties for room and elevated temperatures. They have been investigated for microstructure and mechanical properties. As the aluminum content increases, the as-cast structure evolves from face-centered cubic dendrite + minor σ-phase interdendrite at x = 0 to B2 dendrite with body-centered cubic (bcc) precipitates + bcc interdendrite with B2 precipitates at x = 2.0. This confirms the strong bcc-forming tendency of Al. The room-temperature Vickers hardness starts from the lowest, HV 220, at x = 0, attains to the maximum, HV 720, at x = 1.0, and then decreases to HV 615 at x = 2.0. Compared with the base alloy system, the current alloy system has a superior combination of hardness and fracture toughness. In addition, Al_xCoCrFeMo_(0.5)Ni alloys except x = 0 display a higher hot hardness level than those of Ni-based superal-loys, including In 718 and In 718 H, up to 1273 K and show great potential in high-temperature applications.
机译：已基于Al_xCoCrCuFeNi系统设计了具有不同Al含量（x = 0、0.5、1.0、1.5和2.0）的高熵合金Al_xCoCrFeMo_（0.5）Ni，以改善室温和高温下的机械性能。已经对它们的微观结构和机械性能进行了研究。随着铝含量的增加，铸态结构从x = 0的面心立方枝晶+较小的σ相枝晶转变为x = 2.0时具有体心立方（bcc）沉淀物的B2枝晶+ b2沉淀物的bcc枝晶。 。这证实了Al的强烈的bcc形成趋势。室温维氏硬度从x = 0时的最低HV 220开始，到x = 1.0时达到最大值HV 720，然后在x = 2.0时降至HV 615。与基础合金体系相比，当前的合金体系具有硬度和断裂韧性的优异组合。另外，x = 0以外的Al_xCoCrFeMo_（0.5）Ni合金显示出比Ni基超级合金（包括In 718和In 718 H）高的热硬度水平，最高可达1273 K，在高温应用中显示出巨大的潜力。

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