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Three-dimensional ultrasounds bring about crystallographic microstructure transition and mechanical performance synergy for multicomponent (FeCoNiCr)85Mo15 eutectic alloy
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W.J. Gao, X. Wang, J.Y. Wang, W. Zhai*, B. Wei
Transactions of Materials Research | 2025, 1(1) : 100005
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Transactions of Materials Research | 2025, 1(1): 100005
• METALLIC MATERIALS •
Three-dimensional ultrasounds bring about crystallographic microstructure transition and mechanical performance synergy for multicomponent (FeCoNiCr)85Mo15 eutectic alloy
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W.J. Gao, X. Wang, J.Y. Wang, W. Zhai*, B. Wei
Affiliations
  • MOE Key Laboratory of Materials Physics and Chemistry Under Extraordinary Conditions, School of Physical Science and Technology, Northwestern Polytechnical University, Xi'an, 710072, China
Published: 2025-04-03 doi: 10.1016/j.tramat.2025.100005
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Three-dimensional (3D) ultrasounds were applied to the solidification process of multicomponent (FeCoNiCr)85Mo15 eutectic alloy. At the small ultrasonic amplitude of 14 μm, the lamellar (γ+σ) eutectic was significantly refined, and the interface orientation was shifted from [001]γ//[112]σ and (-110)γ//(11-1)σ to the most stable configuration of [011]γ//[-110]σ and (-11-1)γ//(001)σ. If ultrasonic amplitude was increased, σ phase transferred from tetragonal to hexagonal close-packed (HCP) structure, while its independent nucleation and growth facilitated the formation of anomalous (γ+σ) eutectics. Once the ultrasonic amplitude reached 16 μm, a metastable μ phase enriched with Cr element was found in the form of lamellar (γ+μ) eutectic structure. These crystallographic structure transitions were attributed to the ultrasound induced high energy and nonlinear cavitation and acoustic streaming effects. The diverse eutectic structures obtained by 3D ultrasonic solidification brought in superior mechanical properties. The maximum yield strength and ductility were enhanced by 1.4 and 2.1 times to 2000 MPa and 21.4 %, respectively. The strengthening mechanism belonged to the refinement of lamellar (γ+σ) eutectics and the stable interface configuration secured by weak ultrasounds, whereas the increased volume fraction of the FCC-structured γ phase in (γ+σ) eutectic and the metastable (γ+μ) eutectic structure formed under strong ultrasounds contributed to enhance alloy ductility.

Eutectic structure  /  Multicomponent alloy  /  Ultrasonic solidification  /  Crystallographic relation  /  Mechanical property
W.J. Gao, X. Wang, J.Y. Wang, W. Zhai, B. Wei. Three-dimensional ultrasounds bring about crystallographic microstructure transition and mechanical performance synergy for multicomponent (FeCoNiCr)85Mo15 eutectic alloy[J]. Transactions of Materials Research, 2025 , 1 (1) : 100005 - . DOI: 10.1016/j.tramat.2025.100005
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  • National Natural Science Foundation of China(52130405; 52088101; U24A20206)
  • Research Plan of Shaanxi Province(2023-JC-JQ-28; 2024ZY-JCYJ-04-07)
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Year 2025 volume 1 Issue 1
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Article Info
doi: 10.1016/j.tramat.2025.100005
  • Receive Date：2025-03-21
  • Online Date：2026-06-10
  • Published：2025-04-03
Article Data
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History
  • Received：2025-03-21
  • Revised：2025-04-01
  • Accepted：2025-04-01
Funding
National Natural Science Foundation of China(52130405; 52088101; U24A20206)
Research Plan of Shaanxi Province(2023-JC-JQ-28; 2024ZY-JCYJ-04-07)
Affiliations
    MOE Key Laboratory of Materials Physics and Chemistry Under Extraordinary Conditions, School of Physical Science and Technology, Northwestern Polytechnical University, Xi'an, 710072, China

Corresponding:

* E-mail address: (W. Zhai).
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表12种不同金属材料的力学参数
科
Family		 属数
Number of
genus		 种数
Number of
species		 占总种数比例
Percentage of
total species (%)		 属
Genus		 种数
Number of
species		 占总种数比例
Percentage of total
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鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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