Elucidating the effect of cyclic closed-die forging processing on the microstructure and wear properties of novel low-cost [FeNi]75−xCr15Mn10Nbx (x = 0, 5, 10 at%) high-entropy alloys

For the first time, cyclic closed-die forging (CCDF) processing was used to process novel low-cost [FeNi]75−xCr15Mn10Nbx (x = 0, 5, 10 at%) high-entropy alloys (HEAs). These HEAs have a dual-phase structure with [FeNiNb]-rich dendrites dispersed in a nearly homogenous face-centered cubic (FCC) matri...

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Published in:Colloids and surfaces. A, Physicochemical and engineering aspects Physicochemical and engineering aspects, 2024-12, Vol.702, p.135027, Article 135027
Main Authors: Naseri, Majid, Myasnikova, Alena, Gholami, Davood, Mikhailov, Dmitry, Amra, Mostafa, Imantalab, Omid, Shaburova, Nataliya, Orlov, Aleksandr, Lin, Yong-Cheng, Hosseini, Seyedmehdi, Dana, Mohammad Mahdi, Mourad, Abdel-Hamid I., Borhani, Ehsan, Trofimov, Evgeny
Format: Article
Language:English
Subjects:
Cyclic closed-die forging
Hardness
Low-cost high-entropy alloy
Microstructure
Wear resistance
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Summary:For the first time, cyclic closed-die forging (CCDF) processing was used to process novel low-cost [FeNi]75−xCr15Mn10Nbx (x = 0, 5, 10 at%) high-entropy alloys (HEAs). These HEAs have a dual-phase structure with [FeNiNb]-rich dendrites dispersed in a nearly homogenous face-centered cubic (FCC) matrix. The increase in Nb leads to a higher fraction of [FeNiNb]-rich phase. Additionally, the [FeNi]65Cr15Mn10Nb10 alloy showed the development of homogenous nanograin, accumulation of dislocations, fragmentation of [FeNiNb]-rich dendrites, and efficient distribution within the matrix, resulting in ultrahigh hardness and the lowest wear rate, specifically 795 HV and (1.1 ± 0.1) × 10–5 mm3.N−1.m−1 after CCDF. These findings suggest that CCDF processing has the potential to achieve cost-effective nanostructured HEAs and implement them in engineering and structural applications. •Novel cost-effective [FeNi]75−xCr15Mn10Nbx (x = 0, 5, 10 at%) HEAs were subjected CCDF process.•Grain refinement achieved through CCDF has potential to improve wear resistance properties of HEAs.•Ultrahigh hardness and lowest wear rate were successfully achieved in the CCDF-processed [FeNi]65Cr15Mn10Nb10 alloy.•CCDF was suggested as an effective approach for developing nanostructured HEAs.
ISSN:0927-7757
DOI:10.1016/j.colsurfa.2024.135027