{"title":"Influence of minor refining additives Al and Mn on the amorphous structure formation in the Fe-Co-Ni-Cr-V-B alloy","authors":"Andrey Bazlov , Evgeniy Ubyivovk , Erzhena Zanaeva , Mark Parkhomenko","doi":"10.1016/j.intermet.2025.108850","DOIUrl":"10.1016/j.intermet.2025.108850","url":null,"abstract":"<div><div>The paper studies the effect of small additions, not exceeding 0.2 %, of aluminum and manganese on the structure of ingots and the tendency to amorphization of the high entropy alloy (Fe<sub>0</sub><sub>.25</sub>Ni<sub>0.25</sub>Co<sub>0.25</sub>Cr<sub>0.125</sub>V<sub>0.125</sub>)<sub>83</sub>B<sub>17</sub>. The addition of aluminum and manganese affects the phase composition of the ingots, suppressing the crystallization of the MeB boride and increasing the content of the eutectic component. The optimum amount of additives that lead to the formation of a completely amorphous structure during the melt spinning process has been established. The relationships between the alloy crystallization process and the tendency to form an amorphous structure during melt spinning process are determined. The work shows that amorphous multicomponent alloys with the addition of vanadium require a special approach, since vanadium acts as an internal nitrogen getter and forms refractory nitride particles. It is shown that refractory particles, which are crystallization centers, can form during the master alloy production process and make it difficult to obtain a single amorphous state during the melt spinning process.</div></div>","PeriodicalId":331,"journal":{"name":"Intermetallics","volume":"184 ","pages":"Article 108850"},"PeriodicalIF":4.3,"publicationDate":"2025-05-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144148099","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
IntermetallicsPub Date : 2025-05-28DOI: 10.1016/j.intermet.2025.108829
Zhiyuan Wang , Mengjiao Xia , Chuilei Kong
{"title":"Microstructure and wear performance of CoCrFeNi multi-principal element alloy coating deposited using laser cladding","authors":"Zhiyuan Wang , Mengjiao Xia , Chuilei Kong","doi":"10.1016/j.intermet.2025.108829","DOIUrl":"10.1016/j.intermet.2025.108829","url":null,"abstract":"<div><div>CoCrFeNi multi-principal element alloy (MPEA) coatings prepared using laser cladding (LC) with unique properties have aroused great interest in recent years and have been widely studied. However, there is little research on the influence of various process parameters during the LC process on the coating. In this study, CoCrFeNi MPEA LC coatings were prepared within the process range of laser power at 650–800 W and powder feeding speed 9–13g⋅min<sup>−1</sup>. The grain structures and microscopic morphologies of coatings were characterized, and the wear mechanisms were analyzed using the nano-indentation and wear tests. The results show that the prepared MPEA coatings are of good quality and contain a single FCC phase. When the laser power increases to 800 W, excessive laser power causes some Ti atoms to enter the coating to form a Ti-rich phase. The titanium-rich phase has high hardness, but it is easy to generate brittle TiO<sub>2</sub> in the wear test, which is not conducive to the improvement of wear performance. The coatings carried the load and improved the wear resistance of the substrate. Through this study, the application field of high-hardness MEA coating can be further expanded.</div></div>","PeriodicalId":331,"journal":{"name":"Intermetallics","volume":"184 ","pages":"Article 108829"},"PeriodicalIF":4.3,"publicationDate":"2025-05-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144148102","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
IntermetallicsPub Date : 2025-05-28DOI: 10.1016/j.intermet.2025.108852
Xianfeng Ma , Changquan Xiao , Wenjian Zhu, Da Wang, Bihan Sun, Sirui Liu
{"title":"Microstructure and corrosion performance of laser-cladded AlCrFeNiNb high-entropy alloy coating on 316L steel in liquid lead-bismuth eutectic","authors":"Xianfeng Ma , Changquan Xiao , Wenjian Zhu, Da Wang, Bihan Sun, Sirui Liu","doi":"10.1016/j.intermet.2025.108852","DOIUrl":"10.1016/j.intermet.2025.108852","url":null,"abstract":"<div><div>The AlCrFeNiNb high-entropy alloy (HEA) coating was prepared on 316L austenite steel by laser cladding. The microstructure of as-received coating sample and its corrosion behavior in 550 °C lead-bismuth eutectic (LBE) with 5 × 10<sup>−6</sup> wt% oxygen concentration for 300, 700, and 1000 h of exposure were investigated. The results show that the coating exhibits compact structure, metallurgical bonding, lower oxidation rate, but susceptible to dissolution corrosion when absence of an oxide scale. The corrosion mechanism of the HEA coating in the LBE, and the positive or negative effects of the phase compositions of coating on the corrosion behavior were discussed. The optimization of fabricating coating is also raised based on the results.</div></div>","PeriodicalId":331,"journal":{"name":"Intermetallics","volume":"184 ","pages":"Article 108852"},"PeriodicalIF":4.3,"publicationDate":"2025-05-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144148103","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
IntermetallicsPub Date : 2025-05-27DOI: 10.1016/j.intermet.2025.108853
Dingbang Sun , Yingchao Guo , Huijun Wang , Yongfeng Liang , Junpin Lin , Hui Xue
{"title":"Synergistically enhancing the strength and ductility of TiAl alloy through in-situ precipitation of Ti2AlC and TiB2 nanoparticles","authors":"Dingbang Sun , Yingchao Guo , Huijun Wang , Yongfeng Liang , Junpin Lin , Hui Xue","doi":"10.1016/j.intermet.2025.108853","DOIUrl":"10.1016/j.intermet.2025.108853","url":null,"abstract":"<div><div>In our previous research, the tensile properties of the sintered TiAl + <em>x</em>B<sub>4</sub>C composites were significantly enhanced with the addition of nano-B<sub>4</sub>C at both room temperature and elevated temperature. However, these composites demonstrated almost no ductility at room temperature. In this study, heat treatment was applied to Ti<sub>2</sub>AlC/TiB<sub>2</sub>-Ti-48Al-7Nb-(V, Cr) composites to enhance their ductility. Additionally, an investigation of the evolution of the microstructure and tensile properties was carried out at room temperature and elevated temperature. The results indicate that a greater number of Ti<sub>2</sub>AlC nanoparticles precipitated at the interface of the lamellae, while the content of α<sub>2</sub> phase decreased following heat treatment. At room temperature, after being heat-treated at 900 °C for 48 h, the elongation significantly improved from 0.11 ± 0.03 % to 0.53 ± 0.04 %. However, the ultimate tensile strength slightly decreased from 631 ± 28 MPa to 602 ± 10 MPa. At elevated temperatures (800 °C), the elongation increased from 2.2 ± 0.2 % to 7.3 ± 0.8 %, while the ultimate tensile strength remained similar, measuring 627 ± 19 MPa and 624 ± 12 MPa, respectively. Compared to the TiAl alloy without the addition of nano-B<sub>4</sub>C, both the strength and elongation of the composites have significantly improved following heat treatment.</div></div>","PeriodicalId":331,"journal":{"name":"Intermetallics","volume":"184 ","pages":"Article 108853"},"PeriodicalIF":4.3,"publicationDate":"2025-05-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144137941","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
IntermetallicsPub Date : 2025-05-24DOI: 10.1016/j.intermet.2025.108838
K.X. Yin , Y. Yiliti , S.T. Li , C.Y. Zhang , Y.K. Zhou , H.F. Zhang , Z.W. Zhu
{"title":"Beyond elemental intrinsic characteristics: ΔHmixB−F-driven solid solution phase structure modeling in HEAs","authors":"K.X. Yin , Y. Yiliti , S.T. Li , C.Y. Zhang , Y.K. Zhou , H.F. Zhang , Z.W. Zhu","doi":"10.1016/j.intermet.2025.108838","DOIUrl":"10.1016/j.intermet.2025.108838","url":null,"abstract":"<div><div>This study introduces an innovative approach for predicting solid-solution phase structures in high-entropy alloys (HEAs) by integrating a thermodynamic mixing enthalpy difference parameter <span><math><mrow><mo>Δ</mo><msubsup><mi>H</mi><mtext>mix</mtext><mrow><mi>B</mi><mo>−</mo><mi>F</mi></mrow></msubsup></mrow></math></span>—quantifying inter-element interactions between BCC and FCC structures—with conventional descriptors representing elemental intrinsic properties, including valence electron concentration (VEC), atomic size mismatch (δ), and Gibbs free energy differences of pure elements in dual-phase configurations (<span><math><mrow><mo>Δ</mo><msub><mi>G</mi><mn>0</mn></msub></mrow></math></span>). This synergistic framework significantly enhances the predictive accuracy for solid solution phase structures in HEAs, achieving a classification consistency rate (CCR) of 94.9 % across 569 HEA systems through the combined VEC+ <span><math><mrow><mo>Δ</mo><msubsup><mi>H</mi><mtext>mix</mtext><mrow><mi>B</mi><mo>−</mo><mi>F</mi></mrow></msubsup></mrow></math></span> parameter. To validate the methodology, a series of unreported transition-metal-rich AlCoCrNiV-based HEAs were synthesized and systematically characterized via X-ray diffraction (XRD), field-emission scanning electron microscopy (FESEM) coupled with energy-dispersive spectroscopy (EDS), and transmission electron microscopy (TEM) with microchemical analysis. The experimental observations exhibit excellent agreement between the predicted phase constitutions and the observed structural features, demonstrating the reliability and practical applicability of the proposed strategy. This work establishes a robust foundation for rational HEA design and provides critical guidance for advancing predictive frameworks in multi-component alloy systems through the integration of thermodynamic principles and empirical descriptors.</div></div>","PeriodicalId":331,"journal":{"name":"Intermetallics","volume":"184 ","pages":"Article 108838"},"PeriodicalIF":4.3,"publicationDate":"2025-05-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144123621","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
IntermetallicsPub Date : 2025-05-24DOI: 10.1016/j.intermet.2025.108855
Qiping Zhou, Junming Luo, Shiyu Cui, Zhesong Wang
{"title":"Effect of gradient nanostructures on mechanical properties of Ti/AlCoCrFeNi composites","authors":"Qiping Zhou, Junming Luo, Shiyu Cui, Zhesong Wang","doi":"10.1016/j.intermet.2025.108855","DOIUrl":"10.1016/j.intermet.2025.108855","url":null,"abstract":"<div><div>Despite the challenges in engineering applications, the strength, plasticity, and wear resistance of metallic materials still exist, especially at room temperature, where these properties are critical to the performance of the materials. However, there is a certain gap in current research in revealing the mechanism of the effect of high entropy alloys (HEA) and fine grain structure (GNS) on room temperature properties. The aim of this study is to investigate the synergistic effect of HEA particles and GNS and their enhancement on the properties of titanium matrix composites under room temperature conditions. The experimental results showed that with the formation of GNS and the strengthening effect of HEA particles significantly increased the strength and wear resistance of the material. This study provides new insights into the interaction between HEA and GNS at room temperature and opens up new directions for the future development of highly wear-resistant metallic materials, with significant potential value especially in aerospace and other applications requiring high-performance components.</div></div>","PeriodicalId":331,"journal":{"name":"Intermetallics","volume":"184 ","pages":"Article 108855"},"PeriodicalIF":4.3,"publicationDate":"2025-05-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144123616","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
IntermetallicsPub Date : 2025-05-24DOI: 10.1016/j.intermet.2025.108846
Jiahao Liu , Dianchun Ju , Jing Zhang , Yuji Cheng , Zhanfang Wu , Lida Che , Xiangyang Li , Zhoujin Lv
{"title":"Enhance corrosion resistance via passivation treatment for CrMnFeCoNi high-entropy alloy prepared by hot isostatic pressing","authors":"Jiahao Liu , Dianchun Ju , Jing Zhang , Yuji Cheng , Zhanfang Wu , Lida Che , Xiangyang Li , Zhoujin Lv","doi":"10.1016/j.intermet.2025.108846","DOIUrl":"10.1016/j.intermet.2025.108846","url":null,"abstract":"<div><div>CrMnFeCoNi high-entropy alloy (HEA) with equiatomic ratios was prepared through hot isostatic pressing, followed by a passivation treatment to enhance its corrosion resistance. The corrosion behavior and underlying mechanisms of the passivated alloy in 0.5M H<sub>2</sub>SO<sub>4</sub> were systematically examined. The results demonstrated that passivation effectively removed harmful sulfide inclusions from the alloy surface and facilitated the formation of a protective passive film. Electrochemical tests revealed a decrease in corrosion current density (I<sub>corr</sub> = 1.63 × 10<sup>−5</sup>A·cm<sup>−2</sup>) and an increase in corrosion potential (E<sub>corr</sub> = -285 mV) following passivation. Grain boundary corrosion was identified as the dominant corrosion type. X-ray photoelectron spectroscopy (XPS) analysis showed that the passivation treatment enhanced the chromium content and reduced the manganese content in the passive film. Additionally, the oxide/hydroxide ratio in the film was increased, improving its protective properties and thereby enhancing the alloy's corrosion resistance.</div></div>","PeriodicalId":331,"journal":{"name":"Intermetallics","volume":"184 ","pages":"Article 108846"},"PeriodicalIF":4.3,"publicationDate":"2025-05-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144123780","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
IntermetallicsPub Date : 2025-05-24DOI: 10.1016/j.intermet.2025.108851
Zhenxiang Zhao , Chunyan Li , Tianyu Chen , Jianhui Liu , Xiaoqiang Fu , Shengzhong Kou , Xiaocheng Li , Yudian Ouyang , Jinfeng Kang
{"title":"Cryogenic static and dynamic deformation behavior of Zr-based bulk metallic glasses","authors":"Zhenxiang Zhao , Chunyan Li , Tianyu Chen , Jianhui Liu , Xiaoqiang Fu , Shengzhong Kou , Xiaocheng Li , Yudian Ouyang , Jinfeng Kang","doi":"10.1016/j.intermet.2025.108851","DOIUrl":"10.1016/j.intermet.2025.108851","url":null,"abstract":"<div><div>Stable extension of metallic glass shear bands is crucial for achieving excellent macroscopic plasticity, yet quantitatively establishing the relationship between metallic glass shear band behavior and macroscopic plasticity remains a significant challenge. This study, based on a series of cryogenic quasi-static and dynamic compressive tests, reveals that optimal cryogenic compression plastic strain of up to 21.1 % is attained at 143 K. Combined with molecular dynamics simulations, the reasons can be attributed to the combination of the local temperature rise resulting from the adiabatic shear and the enhancement of interatomic forces under cryogenic conditions. Notably, the attenuation of the serrated flow behavior under cryogenic conditions. Additionally, during dynamic loading at cryogenic temperatures, negative strain rate sensitivity is exhibited as the temperature decreases. These findings could contribute to enhancing the understanding of the temperature-dependent characteristics of plasticity and aid in the design of plasticity/strength for metallic glass at cryogenic temperatures.</div></div>","PeriodicalId":331,"journal":{"name":"Intermetallics","volume":"184 ","pages":"Article 108851"},"PeriodicalIF":4.3,"publicationDate":"2025-05-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144131281","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
IntermetallicsPub Date : 2025-05-23DOI: 10.1016/j.intermet.2025.108856
E. Bahrami , M. Khodaei
{"title":"Synergistic effects of Mo and Cu on glass forming ability in mechanically alloyed FeCrNiSiWNbB complex metallic compound","authors":"E. Bahrami , M. Khodaei","doi":"10.1016/j.intermet.2025.108856","DOIUrl":"10.1016/j.intermet.2025.108856","url":null,"abstract":"<div><div>Amorphous materials, due to their unique structure, have excellent thermal and magnetic properties. These materials are manufactured using different methods such as melt spinning and mechanical alloying. Among these methods, mechanical alloying is exceptionally suitable for large-scale production of amorphous materials. The purpose of this research is to assess the effect of Mo and Cu additions on the glass forming ability (GFA), magnetic properties and thermal stability of Fe-16Cr-3Ni-1.5Si-3W-1Nb-1.5B-xMo-yCu (x = 2.5, 5 and y = 0.5, 1, 1.5 wt%) amorphous mechanically alloyed ferroalloy powders for industrial application. The morphology and composition of the powders were measured by scanning electron microscopy armed with energy dispersive spectroscopy, respectively. Also, the phase changes were investigated using an x-ray diffraction technique. The GFA was exceedingly increased by adding Mo and Cu. Not only was the saturation magnetization (Ms) of the samples reduced, but the coercive force (Hc) also decreased with increasing Mo and Cu content. It was found that the optimal mechanically alloyed sample, containing 5 wt% Mo and 1 wt% Cu, exhibited a higher glass transition temperature (608 °C) compared to the Fe-based ferroalloy (587 °C). Ultimately, the saturation magnetization of the optimal sample decreased by 57.5 %, from 96 emu/g to 40 emu/g.</div></div>","PeriodicalId":331,"journal":{"name":"Intermetallics","volume":"184 ","pages":"Article 108856"},"PeriodicalIF":4.3,"publicationDate":"2025-05-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144116000","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Unveiling the influence of grain refinement and crystallographic orientation on electrochemical behavior of cost-effective Fe40Ni25Cr25Mo5Al5 high-entropy alloy","authors":"Majid Naseri , Omid Imantalab , Svetlana Pratskova , Davood Gholami , Dmitry Mikhailov , Milena Efimova , Nataliya Shaburova , Yong-Cheng Lin , Abdel-Hamid I. Mourad , Evgeny Trofimov","doi":"10.1016/j.intermet.2025.108854","DOIUrl":"10.1016/j.intermet.2025.108854","url":null,"abstract":"<div><div>This research has undoubtedly offered valuable insight into the correlation of grain refinement and crystallographic texture with the electrochemical properties of the cost-effective Fe<sub>40</sub>Ni<sub>25</sub>Cr<sub>25</sub>Mo<sub>5</sub>Al<sub>5</sub> high-entropy alloy in a 0.5 M H<sub>2</sub>SO<sub>4</sub> solution, successfully processed through the cyclic closed-die forging (CCDF) technique for up to six passes. The findings revealed that the high strains imposed during CCDF processing, along with the uniform distribution of extremely fine grains, significantly decreased the corrosion current density of the alloy from 1.05 to 0.75 μA/cm<sup>2</sup>. Moreover, the presence of high-intensity {011} orientations, such as the Brass {011}<211> and P {110}<221> components in the CCDF-processed alloy, provided ideal conditions for developing oxide passive films with superior protection properties compared to the as-homogenized alloy. Consequently, these findings open new avenues for the exploration of the crystallographic-orientation-dependent electrochemical properties in the corrosion performance of high-entropy alloys.</div></div>","PeriodicalId":331,"journal":{"name":"Intermetallics","volume":"184 ","pages":"Article 108854"},"PeriodicalIF":4.3,"publicationDate":"2025-05-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144123618","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}