Scholarlink

<p>The as-cast NiAl-20V10Cr5Mo eutectic multi-principal element alloy was tested for room-temperature mechanical properties after Fe-Mo synergistic alloying. Scanning electron microscopy (SEM) and x-ray diffraction (XRD) were used to examine its phase structure, microstructure, and morphology. The results showed that the microstructure of the alloy changed from fully eutectic to subeutectic with an increase in Fe content and a reduction in Mo content. The volume percentage of the B2 phase increased significantly, with the alternate composition of the eutectic lamellar structure accompanied by the emergence of dendrites, and the lamellar spacing of the alloy coarsened. The compressive properties of the alloys initially increased and subsequently decreased. The main factors for the increase in alloy strength are the increase in the B2 phase and the degree of lattice misfit. Among these alloys, the NiAl-20V10Cr3Mo2Fe alloy demonstrated superior mechanical properties, with a yield strength, fracture strength, and compressive strain of 1682.1&#xa0;MPa, 3158.4&#xa0;MPa, and 34.6%, respectively.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Effect of Fe and Mo Content on the Microstructure and Mechanical Properties of NiAl-Based Multi-Principal Element Alloys

  • 期刊论文

  • 发表日期：

    2025年2月12日

查看全文
  • Jiankun Yang,
  • Xicong Ye,
  • Dongdong Xia,
  • Jiaxing Feng,
  • Zhongheng Diao,
  • Guangwei Zhao,
  • Dong Fang,
  • Bo Li,
  • Huijun Kang

摘要

The as-cast NiAl-20V10Cr5Mo eutectic multi-principal element alloy was tested for room-temperature mechanical properties after Fe-Mo synergistic alloying. Scanning electron microscopy (SEM) and x-ray diffraction (XRD) were used to examine its phase structure, microstructure, and morphology. The results showed that the microstructure of the alloy changed from fully eutectic to subeutectic with an increase in Fe content and a reduction in Mo content. The volume percentage of the B2 phase increased significantly, with the alternate composition of the eutectic lamellar structure accompanied by the emergence of dendrites, and the lamellar spacing of the alloy coarsened. The compressive properties of the alloys initially increased and subsequently decreased. The main factors for the increase in alloy strength are the increase in the B2 phase and the degree of lattice misfit. Among these alloys, the NiAl-20V10Cr3Mo2Fe alloy demonstrated superior mechanical properties, with a yield strength, fracture strength, and compressive strain of 1682.1 MPa, 3158.4 MPa, and 34.6%, respectively.