Intermetallics最新文献_第8页

Effect of Al variation on microstructure and properties of porous FeCoNiCrAlx high-entropy alloys synthesized via thermal explosion

IF 4.3 2区材料科学

Intermetallics Pub Date : 2025-02-03 DOI: 10.1016/j.intermet.2025.108687

Bowen Tang , Zhichao Shang , Weijia Guo , Zixuan Pang , Farid Akhtar , Jianzhong Wang , Baojing Zhang , Shiheng Li , Peizhong Feng

{"title":"Effect of Al variation on microstructure and properties of porous FeCoNiCrAlx high-entropy alloys synthesized via thermal explosion","authors":"Bowen Tang , Zhichao Shang , Weijia Guo , Zixuan Pang , Farid Akhtar , Jianzhong Wang , Baojing Zhang , Shiheng Li , Peizhong Feng","doi":"10.1016/j.intermet.2025.108687","DOIUrl":"10.1016/j.intermet.2025.108687","url":null,"abstract":"<div><div>Porous FeCoNiCrAl<sub>x</sub> high-entropy alloys (HEAs) with excellent resistance to high-temperature oxidation and corrosion were synthesized by a novel thermal explosion (TE) reaction. This method combines the advantages of FeCoNiCrAl<sub>x</sub> HEAs and porous intermetallic compounds as high-temperature filtration materials. The effects of Al atomic fraction on the microstructure and phase composition of FeCoNiCrAl<sub>x</sub> HEAs were studied. A comprehensive assessment of the mechanical properties, oxidation resistance, and corrosion resistance of these materials was also evaluated. The results indicate that the main phase structure of HEAs has a transition from FCC to BCC with the increase of Al addition. Meanwhile, the intermetallic compound B2 phase precipitates out of the matrix and significantly enhances the mechanical properties of FeCoNiCrAl<sub>x</sub> HEAs. Adding Al improves not only the porosity (32.05 %) and compression performance (σ<sub>max</sub> = 219.44 MPa, ε<sub>max</sub> = 2.93 %) of porous FeCoNiCrAl<sub>x</sub> but also enhances the oxidation resistance of the alloy at 1000 °C and corrosion resistance in 3.5 wt% NaCl solution. The 20 at.% Al sample (Al-20) forms a continuous Al<sub>2</sub>O<sub>3</sub> protective film on the skeleton of porous HEAs, and the mass gain is only 3.48 % after 120 h oxidation at 1000 °C. Al-5 promotes the generation of passivation films and improves the stability of passivation films, effectively limiting the electrochemical reaction of the material.</div></div>","PeriodicalId":331,"journal":{"name":"Intermetallics","volume":"180 ","pages":"Article 108687"},"PeriodicalIF":4.3,"publicationDate":"2025-02-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143104022","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}

引用次数: 0

Behavior of tungsten-particle-reinforced Zirconium-based bulk metallic glass composites when penetrating a semi-infinite target

IF 4.3 2区材料科学

Intermetallics Pub Date : 2025-02-01 DOI: 10.1016/j.intermet.2024.108601

Huie Hu , Haoyu Jin , Junhan Chi , Yifan Du , Yunfei Ma

{"title":"Behavior of tungsten-particle-reinforced Zirconium-based bulk metallic glass composites when penetrating a semi-infinite target","authors":"Huie Hu , Haoyu Jin , Junhan Chi , Yifan Du , Yunfei Ma","doi":"10.1016/j.intermet.2024.108601","DOIUrl":"10.1016/j.intermet.2024.108601","url":null,"abstract":"<div><div>This study investigates the penetration behavior of 50 % vol. W-reinforced Zr-based bulk metallic glass composites (W<sub>p</sub>/Zr-BMGCs) with W particle sizes of 30, 75, and 250 μm using semi-infinite target penetration tests. The composites and craters were characterized via X-ray diffraction, optical microscopy, scanning electron microscopy, and energy-dispersive X-ray spectroscopy. The impact velocities during the tests were approximately 850 and 1250 m s<sup>−1</sup>. The results show that the penetration depth of the W<sub>p</sub>/Zr-BMGCs at high impact velocities is greater than that at low impact velocities. At similar impact velocities, the smaller the particle sizes constituting the reinforcing phase, the greater the penetration depth. Among the composites, W<sub>p</sub>/Zr-BMGC with a W particle size of 30 μm achieves a maximum penetration depth of 10.62 mm at an impact velocity of 1283.8 m s<sup>−1</sup>. During penetration, the Zr-based amorphous phase melts and W particles primarily undergo plastic deformation. Adiabatic shear bands generated during penetration promote the nucleation and propagation of voids and cracks, resulting in target-plate damage. High-speed penetration-induced unloading waves generate coronal cracks near the bottom of the crater, accelerating target-plate damage. The good penetration capability of the W<sub>p</sub>/Zr-based amorphous composite with 30-μm W particles may be related to the beneficial effects of the small W particles on interfacial bonding.</div></div>","PeriodicalId":331,"journal":{"name":"Intermetallics","volume":"177 ","pages":"Article 108601"},"PeriodicalIF":4.3,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143095382","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}

引用次数: 0

Role of Mo on microstructure evolution and dry-sliding wear mechanism of CoCrNi-based laser cladding coatings

IF 4.3 2区材料科学

Intermetallics Pub Date : 2025-02-01 DOI: 10.1016/j.intermet.2024.108599

S.S. Liu , C.L. Fan , J.F. Wang , X.H. Wang , C.J. Zhou

{"title":"Role of Mo on microstructure evolution and dry-sliding wear mechanism of CoCrNi-based laser cladding coatings","authors":"S.S. Liu , C.L. Fan , J.F. Wang , X.H. Wang , C.J. Zhou","doi":"10.1016/j.intermet.2024.108599","DOIUrl":"10.1016/j.intermet.2024.108599","url":null,"abstract":"<div><div>CoCrNiMo<sub>x</sub> coatings were prepared on the surface of 1045 steel using coaxial powder feeding laser cladding. The effects of different Mo addition on microstructure evolution, micro-hardness, and wear resistance under different friction condition of the laser cladding coatings were investigated. The results show that there is a critical amount for Mo on the structural transformation of CoCrNi. When mole ratio of Mo ≤ 0.4, the coatings is mainly composed of FCC eutectic structure, and when the mole ratio of Mo ≥ 0.6, a large amount of hard and brittle laves phase of NiMo<sub>2</sub>-type structure is formed in the coatings, which results in the increased in micro-hardness of the coatings. At the same time, the addition of Mo affect the dilution rate at the interface. During the wear tests under YG6, Si<sub>3</sub>N<sub>4</sub>, and GCr15 frictional pairs, the dominant factors affecting the effect of Mo addition on CoCrNi medium-entropy alloys are the amount of Mo-rich eutectic structures and the formation of laves phases. Additionally, hardness and surface state of the frictional pairs are also major factors affecting the wear resistance differences of CoCrNiMo<sub>x</sub> medium-entropy alloys under different friction pair effects.</div></div>","PeriodicalId":331,"journal":{"name":"Intermetallics","volume":"177 ","pages":"Article 108599"},"PeriodicalIF":4.3,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143095384","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}

引用次数: 0

Directional design and preparation of Ti-Nb based alloys with predicted high strength and low modulus for biomedical applications: Insights from first-principles calculations

IF 4.3 2区材料科学

Intermetallics Pub Date : 2025-02-01 DOI: 10.1016/j.intermet.2024.108580

Huaihao Chen , Shiwen Hu , Lixin Wang , Linhong Deng

{"title":"Directional design and preparation of Ti-Nb based alloys with predicted high strength and low modulus for biomedical applications: Insights from first-principles calculations","authors":"Huaihao Chen , Shiwen Hu , Lixin Wang , Linhong Deng","doi":"10.1016/j.intermet.2024.108580","DOIUrl":"10.1016/j.intermet.2024.108580","url":null,"abstract":"<div><div>This paper presents the design of <em>β</em>-type Ti-Nb based alloys characterized by high strength and low modulus for biomedical applications. We used a Python program that applied the <em>d</em>-electron alloy design method and the valence electron concentration <em>e</em>/<em>a</em> method to suggest Ti-Nb based ternary alloys with specific desired characteristics, and then determined the modulus of these alloys through first-principles calculations and experimental investigations. The theoretic predication indicated that Ti<sub>12</sub>Nb<sub>3</sub>Zr<sub>1</sub> and Ti<sub>12</sub>Nb<sub>3</sub>Ta<sub>1</sub> as-cast were metastable <em>β</em> titanium alloys with good ductility even after 90 % cold deformation and a high elastic allowable strain (<em>R</em><sub>eH</sub>/<em>E</em>). The higher dislocation density led to a higher strength of the alloys. The formation of {111}<112><em>γ</em>-fiber texture and {112}<111> slip was beneficial for the alloys to maintain characteristic low modulus. The experimental results showed that the elastic modulus of Ti<sub>12</sub>Nb<sub>3</sub>Ta<sub>1</sub> following cold rolling was slightly higher than that theoretically predicted. This discrepancy could be attributed to the formation of the <em>α\"</em> phase with high modulus. It was also confirmed that the stable crystal structure of the simulated <em>β</em>-type Ti-Nb based alloy could be ensured during significant deformation under the experimental conditions, and this stability was dependent on the bonding capacity of the inner electrons. Thus this study offers both theoretical and experimental support for the fabrication of Ti-Nb based alloys that are designed with characteristic low modulus and high strength as novel orthopedic implants materials.</div></div>","PeriodicalId":331,"journal":{"name":"Intermetallics","volume":"177 ","pages":"Article 108580"},"PeriodicalIF":4.3,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143095881","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}

引用次数: 0

Effect of annealing treatment on the phase transformation and mechanical properties of TA15 alloy fabricated by WAAM

IF 4.3 2区材料科学

Intermetallics Pub Date : 2025-02-01 DOI: 10.1016/j.intermet.2024.108590

Chao Wang , Zhongyi Yang , Yiwei Wang , Junzhen Yi , Guang Yang , Bo He

{"title":"Effect of annealing treatment on the phase transformation and mechanical properties of TA15 alloy fabricated by WAAM","authors":"Chao Wang , Zhongyi Yang , Yiwei Wang , Junzhen Yi , Guang Yang , Bo He","doi":"10.1016/j.intermet.2024.108590","DOIUrl":"10.1016/j.intermet.2024.108590","url":null,"abstract":"<div><div>Wire arc additive manufacturing (WAAM) is a promising additive manufacturing technique with growing acceptance in aerospace applications. In this study, the effects of annealing treatment on the microstructure, texture and tensile properties of Ti-6.5Al-2Zr-1Mo-1V alloy fabricated by WAAM were investigated. The results indicated that the microstructure of the as-built specimens is composed of fine basketweave structure within the columnar prior-β grains. With the increase of annealing temperature, the microstructure of the specimen was transformed from fine basketweave structure to lamellar structure and then to bi-lamellar structure. Compared with the as-built specimen (0.48 μm), the average primary α phase thickness of the specimens annealed at 900 °C, 940 °C and 980 °C increased by 0.67 μm, 0.88 μm and 2.66 μm, respectively. Secondary α phases with width of 200 nm were also precipitated for the annealed specimen at 980 °C. In addition, compared with the as-built specimen (1014.8 ± 28.4 MPa, 5.87 %), the tensile strength of the annealed specimens at 900 °C (970.3 ± 9.5 MPa), 940 °C (929.1 ± 4.9 MPa) and 980 °C (922.4 ± 2.1 MPa) decreased slightly. The elongation of the specimens annealed at 900 °C, 940 °C and 980 °C increased by 63.5 %, 82.3 % and 125.4 %, respectively.</div></div>","PeriodicalId":331,"journal":{"name":"Intermetallics","volume":"177 ","pages":"Article 108590"},"PeriodicalIF":4.3,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143095884","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}

引用次数: 0

SiC incorporation effects on AlFeCrNiTi high entropy alloy morphology, mechanical and corrosion properties

IF 4.3 2区材料科学

Intermetallics Pub Date : 2025-02-01 DOI: 10.1016/j.intermet.2024.108583

Zahra Shojaei, Gholam Reza Khayati, Esmaeel Darezereshki

{"title":"SiC incorporation effects on AlFeCrNiTi high entropy alloy morphology, mechanical and corrosion properties","authors":"Zahra Shojaei, Gholam Reza Khayati, Esmaeel Darezereshki","doi":"10.1016/j.intermet.2024.108583","DOIUrl":"10.1016/j.intermet.2024.108583","url":null,"abstract":"<div><div>Using pulse electrodeposition method on copper substrates, AlFeCrNiTi high entropy alloy (HEA) coatings were successfully applied with various concentrations of silicon carbide (0, 10, 15 and 20 g/L) in the coating bath as reinforcement. Various techniques were used to investigate the created structure and its properties, including morphology, chemical composition, phase analysis, microhardness, corrosion, and wear. In the presence of silicon carbide particles, the coatings had a spherical morphology. The formation of HEA was confirmed by EDS, XRD, and thermodynamic calculations, which showed that the solid solution formed without silicon carbide and with silicon carbide was FCC + BCC and BCC respectively. Furthermore, the results of mechanical and corrosion properties showed that the fineness of the grains improved microhardness and wear resistance, and due to the formation of a continuous passive layer caused by silicon carbide powder, the corrosion current density in 3.5 wt% NaCl solution decreased to 0.79 A/cm<sup>2</sup> and the charge transfer resistance increased to 6810 Ω cm<sup>2</sup>. Also, the sample with a concentration of 20 g/L of silicon carbide in the coating bath has better mechanical and corrosion properties than other samples.</div></div>","PeriodicalId":331,"journal":{"name":"Intermetallics","volume":"177 ","pages":"Article 108583"},"PeriodicalIF":4.3,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143095883","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}

引用次数: 0

Bimodal structure, strength-plasticity synergy and exceptional wear behavior in the spark plasma sintered (CoCrFeNi)84(AlTi)16 medium/high entropy alloy systems

IF 4.3 2区材料科学

Intermetallics Pub Date : 2025-02-01 DOI: 10.1016/j.intermet.2024.108600

M. Torabi-Parizi

{"title":"Bimodal structure, strength-plasticity synergy and exceptional wear behavior in the spark plasma sintered (CoCrFeNi)84(AlTi)16 medium/high entropy alloy systems","authors":"M. Torabi-Parizi","doi":"10.1016/j.intermet.2024.108600","DOIUrl":"10.1016/j.intermet.2024.108600","url":null,"abstract":"<div><div>Medium/high entropy alloy (M/HEA) system compositions are promising in wear resistance with comprehensive mechanical performance to meet the demands of practical engineering and technological applications as a multi-functional material. Nevertheless, for nano/ultrafine grained M/HEAs, there is still rather limited consideration of the friction and wear performance. In the current work, we present a strategy to develop a spark plasma sintered (SPSed) (CoCrFeNi)<sub>84</sub>(AlTi)<sub>16</sub> M/HEAs with low density, strength-plasticity synergy and excellent wear resistance via adjusting the heterogeneous bimodal and nanocrystalline structure of coupled medium/high entropy solid solution phases with proximate equal volume fraction in the presence of multicomponent submicron/nanometer intermetallic phases. The multiple scales-component-phase-driven structure of the (CoCrFeNi)<sub>84</sub>(AlTi)<sub>16</sub> M/HEA systems results in superior mechanical properties for the 3 M/HEA system, where the micro hardness value, compressive yield strength (CYS), the ultimate compressive strength (UCS), the fracture strain (FS) and the specific yield strength are obtained about 676 HV, 1730 MPa, 2095 MPa, 11.5 % and 0.238 GPa cm<sup>3</sup>/g, respectively. Low coefficient of friction (low COF) of 0.17 and wear rate (WR) of 0.1 × 10<sup>−5</sup> mm<sup>3</sup>N<sup>−1</sup>m<sup>−1</sup> are achieved for the 3 M/HEA system, which are much lower than the reported M/HEAs and traditional wear resistance alloy. It is affected by synergy effect of hardness via the BCC phase, work hardenability and plastic deformation of FCC phase. For the 3 M/HEA system, the wear morphology is clearly detected as a smoother surface with the shallower grooves, representing that the main wear mechanism is an abrasive wear. Therefore, developing similar multiple scales-component-phase-driven structures may open an avenue for further optimization of the mechanical/wear performance of the M/HEA systems.</div></div>","PeriodicalId":331,"journal":{"name":"Intermetallics","volume":"177 ","pages":"Article 108600"},"PeriodicalIF":4.3,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143095893","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}

引用次数: 0

Designing stronger γ′-hardened NiCoCr medium entropy alloys

IF 4.3 2区材料科学

Intermetallics Pub Date : 2025-02-01 DOI: 10.1016/j.intermet.2024.108591

Jianxiang Luo , Haoyu Xie , Bojing Guo , Zhongsheng Yang , Zhijia Zhang , Feng He

引用次数: 0

Influence on the microstructure and hydrogen storage properties of Y–TiFe-based composites with transition metals via mechanical milling

IF 4.3 2区材料科学

Intermetallics Pub Date : 2025-02-01 DOI: 10.1016/j.intermet.2024.108603

Zhonggang Han , Bingkun Wang , Tingting Zhai , Hao Sun , Tao Li , Zeming Yuan , Liwen Zhang , Yanghuan Zhang

{"title":"Influence on the microstructure and hydrogen storage properties of Y–TiFe-based composites with transition metals via mechanical milling","authors":"Zhonggang Han , Bingkun Wang , Tingting Zhai , Hao Sun , Tao Li , Zeming Yuan , Liwen Zhang , Yanghuan Zhang","doi":"10.1016/j.intermet.2024.108603","DOIUrl":"10.1016/j.intermet.2024.108603","url":null,"abstract":"<div><div>Hydrogen storage using metal hydrides has a promising future due to its advantages of safety, efficiency, cheapness and cleanliness. In this experiment, the Ti<sub>1.08</sub>Zr<sub>0.1</sub>Y<sub>0.02</sub>Fe<sub>0.6</sub>Ni<sub>0.3</sub>Mn<sub>0.2</sub>+10 wt% <em>M</em> (V, Ni and Pd) composite alloy was produced by co-mingling highly active transition metals (V, Ni and Pd) with Ti<sub>1.08</sub>Zr<sub>0.1</sub>Y<sub>0.02</sub>Fe<sub>0.6</sub>Ni<sub>0.3</sub>Mn<sub>0.2</sub> alloy through ball milling. Then, the activation properties, hydrogen absorption and desorption kinetics, and thermodynamic properties of the alloys were estimated. The results revealed that the catalyst ball milling not only decreased the size of the alloy particles and shortened the diffusion path but also generated new catalytically active centers and increased the diffusion channel of the alloy. The composite Pd ball-milled alloys exhibited superior activation behaviors and hydrogen absorption dynamics, reaching a hydrogen absorption saturation rate of 96.34 % at 100 s, without any activation incubation period at 150 °C, compared to the composite V and Ni ball-milled alloys, which achieved hydrogen absorption saturation rate of 93.34 % and 93.34 % at 100 s, respectively. Nevertheless, the composite V ball-milled alloy showed better hydrogen desorption kinetics and thermodynamic properties. Its hydrogen desorption saturation rate was 97.24 % at 90 °C, and the absolute values of the enthalpy change of its hydrogen absorption and desorption were the smallest of the three composite alloys, at 21.3 kJ‧mol<sup>−1</sup> and 23.0 kJ‧mol<sup>−1</sup>, respectively. Since the electronegativity of V (1.63) was lower than those of Ni (1.91) and Pd (2.20), it is more favourable for reducing the bond energy of the Y–H bond.</div></div>","PeriodicalId":331,"journal":{"name":"Intermetallics","volume":"177 ","pages":"Article 108603"},"PeriodicalIF":4.3,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143095386","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}

引用次数: 0

The effect of some late 3d transition metals additions to a Fe–Mn–Al–C alloy on the development of high-entropy alloys

IF 4.3 2区材料科学

Intermetallics Pub Date : 2025-02-01 DOI: 10.1016/j.intermet.2024.108589

V.O. Semin , R. Yamada , Y. Hamasaki , Y. Miyajima , K. Ishikawa , A. Watanabe , H. Kwon , H.S. Kim , H. Kato , D.V. Louzguine-Luzgin

{"title":"The effect of some late 3d transition metals additions to a Fe–Mn–Al–C alloy on the development of high-entropy alloys","authors":"V.O. Semin , R. Yamada , Y. Hamasaki , Y. Miyajima , K. Ishikawa , A. Watanabe , H. Kwon , H.S. Kim , H. Kato , D.V. Louzguine-Luzgin","doi":"10.1016/j.intermet.2024.108589","DOIUrl":"10.1016/j.intermet.2024.108589","url":null,"abstract":"<div><div>In this study, we introduce a new series of Fe–Mn–Co–Ni–Cu–Al–C alloys that demonstrate tensile plasticity up to 10 % along with exceptionally high yield strength values reaching 1.5 GPa. These mechanical properties are achieved solely through standard technological processes, including homogenization, hot forging, cold rolling, and tempering/aging. This accomplishment is realized by leveraging the high-entropy/multiprinciple element approach, leading to the formation of a duplex-type cF4 and cI2 solid solution structure. The mechanical strengthening observed is a consequence of both dispersion strengthening with cI2 phase and deformation strengthening during the thermo-mechanical treatment applied. It is worth noting that this approach is versatile and can be extended to various other high-entropy-type alloys without strengthening intermetallic compounds. The effects of Cu addition, which is immiscible in Fe, on the resulting microstructure and oxidation heat resistance are also studied. Additionally, thermodynamic calculations are utilized to build phase diagrams for these multicomponent alloys.</div></div>","PeriodicalId":331,"journal":{"name":"Intermetallics","volume":"177 ","pages":"Article 108589"},"PeriodicalIF":4.3,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143095389","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}

引用次数: 0