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Additive Manufacturing of a Strong and Ductile Oxygen-doped NbTiZr Medium-Entropy Alloy

Yaqiong An Yijie Liu Shujie Liu Bozhao Zhang Guanghui Yang Cheng Zhang Xipeng Tan Jun Ding En Ma

Yaqiong An, Yijie Liu, Shujie Liu, Bozhao Zhang, Guanghui Yang, Cheng Zhang, Xipeng Tan, Jun Ding, En Ma. Additive Manufacturing of a Strong and Ductile Oxygen-doped NbTiZr Medium-Entropy Alloy[J]. Materials Futures. doi: 10.1088/2752-5724/ad8df2
引用本文: Yaqiong An, Yijie Liu, Shujie Liu, Bozhao Zhang, Guanghui Yang, Cheng Zhang, Xipeng Tan, Jun Ding, En Ma. Additive Manufacturing of a Strong and Ductile Oxygen-doped NbTiZr Medium-Entropy Alloy[J]. Materials Futures. doi: 10.1088/2752-5724/ad8df2
Yaqiong An, Yijie Liu, Shujie Liu, Bozhao Zhang, Guanghui Yang, Cheng Zhang, Xipeng Tan, Jun Ding, En Ma. Additive Manufacturing of a Strong and Ductile Oxygen-doped NbTiZr Medium-Entropy Alloy[J]. Materials Futures. doi: 10.1088/2752-5724/ad8df2
Citation: Yaqiong An, Yijie Liu, Shujie Liu, Bozhao Zhang, Guanghui Yang, Cheng Zhang, Xipeng Tan, Jun Ding, En Ma. Additive Manufacturing of a Strong and Ductile Oxygen-doped NbTiZr Medium-Entropy Alloy[J]. Materials Futures. doi: 10.1088/2752-5724/ad8df2
OPEN ACCESS

Additive Manufacturing of a Strong and Ductile Oxygen-doped NbTiZr Medium-Entropy Alloy

doi: 10.1088/2752-5724/ad8df2
基金项目: 

This work is supported by National Key R&D Program of China (Grant No. 2023YFB3712002) and the HPC platform of Xi’an Jiaotong University. J.D. and E.M. are indebted to Xi’an Jiaotong University for hosting their work at the Center for Alloy Innovation and Design. E.M. acknowledge National Natural Science Foundation of China (Grant No. 52231001).

详细信息
    通讯作者:

    Jun Ding,e-mail:dingsn@xjtu.edu.cn

Additive Manufacturing of a Strong and Ductile Oxygen-doped NbTiZr Medium-Entropy Alloy

Funds: 

This work is supported by National Key R&D Program of China (Grant No. 2023YFB3712002) and the HPC platform of Xi’an Jiaotong University. J.D. and E.M. are indebted to Xi’an Jiaotong University for hosting their work at the Center for Alloy Innovation and Design. E.M. acknowledge National Natural Science Foundation of China (Grant No. 52231001).

  • 摘要: Refractory multi-principal element alloys (RMPEAs) have garnered attention for their potential in high-temperature applications. Additive manufacturing provides opportunities to tailor RMPEAs' microstructures to enhance these properties. However, controlling defects and addressing the challenges posed by the complex thermal history during the additive manufacturing process are crucial for optimizing RMPEAs' performance. This study aims to fabricate a high-quality oxygen-doped NbTiZr alloys using laser powder bed fusion (L-PBF) and investigate their microstructure and mechanical properties. Our analysis reveals refined grain sizes and a periodic combination of fine near-equiaxed and columnar grain morphologies in the AM-fabricated alloy. Its substructure is characterized by the coexistence of loosely defined cellular dislocation networks and elemental segregation. Compared to its cast counterpart, the additively manufactured alloy exhibits a combination of high yield strength, excellent tensile ductility, and enhanced work hardening. These attributes make the AM-fabricated oxygen-doped NbTiZr alloy a promising candidate for applications required balanced mechanical properties. Understanding the specific effects of different crystal structures and deformation mechanisms is essential for optimizing AM processes to tailor the microstructure and achieve the desired mechanical performance in various engineering applications.

     

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出版历程
  • 收稿日期:  2024-10-30
  • 网络出版日期:  2024-11-04

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