Intermetallics最新文献

{"title":"Synergistic effects of Mo and Cu on glass forming ability in mechanically alloyed FeCrNiSiWNbB complex metallic compound","authors":"E. Bahrami ,&nbsp;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 ,&nbsp;Omid Imantalab ,&nbsp;Svetlana Pratskova ,&nbsp;Davood Gholami ,&nbsp;Dmitry Mikhailov ,&nbsp;Milena Efimova ,&nbsp;Nataliya Shaburova ,&nbsp;Yong-Cheng Lin ,&nbsp;Abdel-Hamid I. Mourad ,&nbsp;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 Fe₄₀Ni₂₅Cr₂₅Mo₅Al₅ high-entropy alloy in a 0.5 M H₂SO₄ 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/cm². Moreover, the presence of high-intensity {011} orientations, such as the Brass {011}&lt;211&gt; and P {110}&lt;221&gt; 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}

{"title":"ZnO-decorated nanoporous Ag with Pt-like Tafel slopes as HER catalysts in alkaline electrolytes manipulated by cyclic square-wave potential sweeping dealloying","authors":"Zhangbin Wu ,&nbsp;Ketao Wang ,&nbsp;Hengtao Ge ,&nbsp;Zhenhua Dan","doi":"10.1016/j.intermet.2025.108847","DOIUrl":"10.1016/j.intermet.2025.108847","url":null,"abstract":"<div><div>Three cyclic square-wave potential sweeping dealloying (CSW) modes have been developed to manipulate the dealloying depth and nanoporosity of dual-phase Ag_35.5Zn_64.5 precursors with the ultimate aim of enhancing the performance of hydrogen evolution reactions. The evolution of the bimodal nanoporous structures is governed by two factors: the initial microstructure of the dual-phase Ag_35.5Zn_64.5 precursors and the cyclic frequency of the CSW dealloying. It is found that the pore sizes can be refined below 20 nm with an increase in the cyclic frequency of CSW as high as 21600 through the restricted diffusion in the single cycle with short cyclic time. Among the nanoporous Ag obtained through the modes of potentiostatic dealloying and CSW with varying cyclic frequencies (<em>f</em>: 1, 216 and 21600), the composites nanoarchitecture at CSW with a cyclic frequency of 21600 exhibits the superior HER catalytic performance in comparison to nanoporous Ag in the potentiostatic dealloying and bulk Ag plate. The nanoporous Ag nanoarchitectures decorated with ZnO nanograins with an average particle size of approximately 6.2 nm, possess an overpotential of 290 mV at 10 mA cm⁻² and a Pt-like low Tafel slope of 39.4 mV dec⁻¹. These properties are attributed to the rapid sweeping of square-wave potential in CSW with a frequency of 21600. The boosted catalytic performance of hydrogen evolution reactions, governed by the Volmer-Heyrovsky mechanism, is attributed to the enrichment of Ag (111) facets and the enlargement of the surface area of ultrafine nanoporosity of ZnO-decorated Ag porous nanoarchitectures.</div></div>","PeriodicalId":331,"journal":{"name":"Intermetallics","volume":"184 ","pages":"Article 108847"},"PeriodicalIF":4.3,"publicationDate":"2025-05-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144123617","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":"Influence of short-range order on precipitate orientation relationships in aluminum containing FCC high entropy alloys","authors":"Elaf A. Anber ,&nbsp;Daniel L. Foley ,&nbsp;James L. Hart ,&nbsp;Howie Joress ,&nbsp;Brian DeCost ,&nbsp;Roger Doherty ,&nbsp;Peter K. Liaw ,&nbsp;Diana Farkas ,&nbsp;Anatoly I. Frenkel ,&nbsp;Mitra L. Taheri","doi":"10.1016/j.intermet.2025.108832","DOIUrl":"10.1016/j.intermet.2025.108832","url":null,"abstract":"<div><div>High entropy alloy (HEA) phase evolution is governed by the competing roles of high configurational entropy and enthalpy of mixing, including severe lattice distortion, and local, or short range, atomic order. While HEAs have seen unprecedented interest over the last decade, many promising applications have not been realized due to limitations in secondary phase, or precipitate, control. Through high resolution microscopy and spectroscopy coupled with molecular dynamics simulations, we examine the role of chemical complexity on the evolution of precipitates, and specifically on their orientation relationships with their host matrices. Microstructural, chemical, and local order measurements are coupled with atomistic simulations of the structure and energy of the Face Center Cubic (FCC)/Body Center Cubic (BCC)B2 interface, in various possible orientations, using model interatomic potentials. Our local order measurements at the nanometer scale revealed that Cr-(Co/Ni/Fe) bonding becomes less favorable after aging. This finding aligns with our microstructural observations, which show lower Cr and Al content in the FCC phase post-aging. We experimentally observed a non-typical orientation relationship between B2-BCC and FCC matrices was stabilized, which we attribute to this chemical complexity. Our atomistic simulations reveal the significant effect of chemical complexity and local ordering on interface energies. Critically, we connect the local chemical order with the formation of high energy interfaces that lead to unusual orientation relationships. The relationship between local order and the orientation relationships landscape of precipitates within a microstructure presents an opportunity for tuning alloy properties at the level of atomic bonding.</div></div>","PeriodicalId":331,"journal":{"name":"Intermetallics","volume":"184 ","pages":"Article 108832"},"PeriodicalIF":4.3,"publicationDate":"2025-05-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144116001","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":"High strain rate sensitivity and nanoscratch properties of the nano-sized crystalline/amorphous Ti-Zr-Hf-Co-Ni-Cu high-entropy metallic glass thin film fabricated by magnetron sputtering","authors":"Guanghua Zhou ,&nbsp;Huazhe Tang ,&nbsp;Ruochen Zhang ,&nbsp;Xuexi Zhang ,&nbsp;Mingfang Qian","doi":"10.1016/j.intermet.2025.108857","DOIUrl":"10.1016/j.intermet.2025.108857","url":null,"abstract":"<div><div>Catering for the development of microelectromechanical systems and micro actuators, the high-entropy conception is introduced into the metallic glass thin films to enhance the mechanical and thermal properties. Ti-Zr-Hf-Co-Ni-Cu high-entropy metallic glass thin films which exhibit promising application prospects are deposited at substrate bias voltages of 0 V, −50 V, and −100 V on the Si substrates coated with ∼150 μm SiO₂ by high-vacuum direct-current magnetron sputtering system in this work. The effects of substrate bias voltage on topographies, crystallinity, fracture behavior, mechanical properties, strain rate sensitivity, nanoscratch properties of thin films are investigated. With the substrate bias voltage increasing from 0 V to −100 V, the roughness of thin film decreases from 2.96 ± 0.03 nm to 0.63 ± 0.03 nm due to the densification and renucleation process. It is also the lowest roughness that has ever been reported in the Ti-Zr-Hf-Co-Ni-Cu high-entropy metallic glass thin films. All elements are distributed uniformly at the micrometer scale on the surfaces of all thin films, and the contents of each element are equal. All the thin films exhibit nanometer-sized crystalline/amorphous bi-phase nanostructures. With the increase of substrate bias voltage, the cross-sectional morphology changes from brittle cleavage character to plastic dimple structures, possibly related to the increased crystallinity. With the increasing substrate bias voltage, the elastic modulus and hardness both increase from 93.8 ± 0.2 GPa to 100.2 ± 0.2 GPa and from 6.4 ± 0.02 GPa to 7.0 ± 0.03 GPa, respectively. A significant strain rate sensitivity of ∼0.1 is discovered in all the thin films. Furthermore, the nanoscratch test shows that the largest critical stress to date for interface separation are discovered in these thin films, which show an enhancement from 5.7 N to 6.7 N with an increase of substrate bias from 0 V to −100 V, suggesting an improvement of bonding strength between the thin film and substrate.</div></div>","PeriodicalId":331,"journal":{"name":"Intermetallics","volume":"184 ","pages":"Article 108857"},"PeriodicalIF":4.3,"publicationDate":"2025-05-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144123620","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":"The effects of temperature and pressure on the hydrogen decrepitation and hydrogen desorption of Sm2TM17 sintered magnets","authors":"J. Griffiths ,&nbsp;O.P. Brooks ,&nbsp;G. Subramanian ,&nbsp;V. Kozak ,&nbsp;D. Brown ,&nbsp;A. Campbell ,&nbsp;A. Lambourne ,&nbsp;R.S. Sheridan","doi":"10.1016/j.intermet.2025.108831","DOIUrl":"10.1016/j.intermet.2025.108831","url":null,"abstract":"<div><div>This study investigated the impact of hydrogen pressure and processing temperature on the hydrogen decrepitation of Sm₂TM₁₇ sintered magnets (where TM = Co, Fe, Cu and Zr). Sm and Co are ‘critical elements’, hence there is interest in recycling these materials from end-of-life applications such as surface mounted permanent magnet motors and actuators. Hydrogen Decrepitation (HD) is a potential recycling technology, but the effect of different processing parameters has yet to be fully explored. Three commercial grades of Sm₂TM₁₇ sintered magnets with different compositions and microstructures were subjected to HD treatments over 72 h, at hydrogen pressures of 2 and 18 bar and temperatures between 25 and 300 °C. The resulting powders were characterised to assess their particle size and morphology, hydrogen content and degassing behaviour.</div><div>Thermal activation temperatures of 100–150 °C allowed for significant decrepitation to be observed across all Sm₂TM₁₇ compositions at both 2 and 18 bar pressures. Degassing analysis showed that all decrepitated powders examined released hydrogen in a single step, with peak hydrogen desorption occurring between 200 and 260 °C. At HD temperatures of 300 °C the reaction ceased as degassing took precedence over hydrogen absorption. Particle size analysis indicated that adjusting HD processing parameters altered powder size greatly, e.g. increasing temperature increased particle size whereas increasing pressure decreased particle size. The sample with the smallest cell size, greatest Cu and Zr and lowest Fe content absorbed the least amount of hydrogen. It also generated the coarsest powder and degassed at the lowest temperatures. This has been linked to this sample having less of the main interstitial hydride forming 2:17 rhombohedral phase found in the magnet nanostructure.</div></div>","PeriodicalId":331,"journal":{"name":"Intermetallics","volume":"184 ","pages":"Article 108831"},"PeriodicalIF":4.3,"publicationDate":"2025-05-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144107508","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":"The influence of chromium on the changes in phase constitution and electrical properties of amorphous Co73-xFe4CrxSi12B11 microwires during crystallization","authors":"Gennady N. Elmanov ,&nbsp;Ilya V. Kozlov ,&nbsp;Aida E. Sarakueva ,&nbsp;Vladimir I. Odintsov ,&nbsp;Margarita N. Churyukanova ,&nbsp;Sergey A. Gudoshnikov","doi":"10.1016/j.intermet.2025.108848","DOIUrl":"10.1016/j.intermet.2025.108848","url":null,"abstract":"<div><div>The influence of chromium on the crystallization processes (temperature and thermal effect of two crystallization stages, as well as the nature of phase composition change during crystallization) of amorphous Co_{73-<em>x</em>}Fe₄Cr_<em>x</em>Si₁₂B₁₁ (<em>x</em> = 0, 2, 4) alloys obtained in the form of microwires in a glass shell was studied. It was shown that if at the 1st crystallization stage of alloys with chromium there is a simultaneous precipitation of two crystalline phases (HCP phase of a solid solution based on cobalt and BCC-phase of Co₂Si) leading to the formation of a lamellar structure, then in the absence of chromium, only the BCC-phase is initially released. The influence of chromium on the increase in the activation energy of the 1st crystallization stage was determined. It was shown that at the 2nd crystallization stage the presence of chromium stabilizes the HCP-Co and Co₂₃B₆ phases. It is also shown that an increase in the Cr concentration from 0 to 4 at.% increases the specific electrical resistance ρ_25 °C of the alloys in the crystalline state from 0.68 ∙ 10⁻⁶ to 1.18 ∙ 10⁻⁶ Ohm ∙ m and simultaneously reduces the thermal coefficient of electrical resistance by 4 times. Based on the resistive measurement data, the Curie temperatures of the magnetic phases formed during crystallization were estimated. Comparison of the data obtained using the DSC and XRPD methods with the results of changes in electrical resistance during crystallization made it possible to interpret the results of resistive measurements and to demonstrate the efficiency of this simple method for studying the crystallization process of amorphous alloys.</div></div>","PeriodicalId":331,"journal":{"name":"Intermetallics","volume":"184 ","pages":"Article 108848"},"PeriodicalIF":4.3,"publicationDate":"2025-05-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144098537","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":"Additive manufacturing of Ti/Zr/Mo/Al lightweight refractory complex concentrated Alloy: Integrated computational material engineering approach","authors":"Madhavan Radhakrishnan ,&nbsp;Jitesh Kumar ,&nbsp;KN Chaithanya Kumar ,&nbsp;Sudip Kumar Sarkar ,&nbsp;Krishna Kamlesh Verma ,&nbsp;Selvamurugan Palaniappan ,&nbsp;Saikumar Dussa ,&nbsp;Shashank Sharma ,&nbsp;Narendra B. Dahotre","doi":"10.1016/j.intermet.2025.108835","DOIUrl":"10.1016/j.intermet.2025.108835","url":null,"abstract":"<div><div>Refractory complex concentrated alloys (RCCAs) comprising refractory metals, are potential candidates for high-temperature applications. The compositional screening of a suitable alloy is very challenging due to the vast compositional space of complex concentrated alloys (CCAs). To address this issue, an integrated computational materials engineering (ICME) framework consisting of detailed CALPHAD (CALculation of PHase Diagram) modeling was adopted to design non-equiatomic Ti/Zr/Mo/Al CCAs. The one-axis equilibrium diagram reveals that Ti₄₀Zr₄₀Mo₁₀Al₁₀ (at. %) exhibits predominantly a single-phase BCC structure over the wide temperature range (860–1660 °C). The alloy was fabricated using laser based directed energy deposition technique. The detailed characterization of as-printed samples revealed the formation of equiaxed grains along build direction with single phase BCC microstructure. Due to the high fraction of porosities, the as-printed alloy was subjected to hot isostatic pressing treatment that resulted in near complete densification of the printed alloy and led to the precipitation of A₃B type precipitates and B2 nano clusters as evidenced by TEM and APT techniques. Finite element (FE) based multilayer and multitrack thermokinetic model approach was considered to seek an insight into the grain morphology evolution during additive manufacturing of these alloys.</div></div>","PeriodicalId":331,"journal":{"name":"Intermetallics","volume":"184 ","pages":"Article 108835"},"PeriodicalIF":4.3,"publicationDate":"2025-05-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144098538","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":"High-temperature tensile and fatigue properties of Ti-48Al-2Cr-2Nb alloy additively manufactured via twin-wire directed energy deposition-arc","authors":"Wenlu Zhou ,&nbsp;Chen Shen ,&nbsp;Lin Wang ,&nbsp;Ying Li ,&nbsp;Ting Zhang ,&nbsp;Jianwen Xin ,&nbsp;Yuhan Ding ,&nbsp;Danqi Zhang ,&nbsp;Yuelong Zhang ,&nbsp;Fang Li ,&nbsp;Xueming Hua","doi":"10.1016/j.intermet.2025.108833","DOIUrl":"10.1016/j.intermet.2025.108833","url":null,"abstract":"<div><div>Recently, additive manufacturing of titanium aluminide has attracted widespread attention. Since titanium aluminide is an ideal structure material for high-temperature, corresponding mechanical properties are of great significance. In present work, tensile properties from 25 °C to 1050 °C and fatigue properties at 650 °C were examined for the first time on twin-wire directed energy deposition-arc (TW-DED-arc) manufactured Ti-48Al-2Cr-2Nb (TiAl-4822) alloy. Importantly, fracture characteristics and deformation mechanisms were systematically investigated. Similar with extensively investigated titanium aluminide, TW-DED-arc manufactured TiAl-4822 alloy generally tends to decrease strength while increase elongation versus temperature during tensile process. Meanwhile, anomalous increase of strength is detected at 750 °C, and brittle-to-ductile transition temperature (BDTT) is around 850 °C. At 25 °C and 550 °C, γ/α₂ lamellar interface and lamellar colony boundary as well as special microstructures are weak positions and susceptible to microcracking, and mechanical twining dominates deformation mode. By comparison, in temperature range of 650 °C–950 °C, γ/α₂ interface and colony boundary are weaker, while deformation mechanism shifts to mechanical twinning and dislocation slip. Moreover, dynamic recrystallization (DRX) starts at 850 °C and further affects tensile behaviors, especially at 1050 °C. The fatigue limit (10⁷ cycles) at 650 °C is approximately 335 MPa, ratio of which to tensile strength is calculated to be 0.71, indicating good fatigue resistance of as-manufactured TiAl-4822 alloy. Irrespective of stress level, crack prefer to initiate and propagate at γ/α₂ interface and colony boundary. Both mechanical twining and dislocation slip are activated during fatigue process, but their morphologies vary with stress level. In sum, these findings provide a valuable reference for mechanical properties of additively manufactured titanium aluminide.</div></div>","PeriodicalId":331,"journal":{"name":"Intermetallics","volume":"184 ","pages":"Article 108833"},"PeriodicalIF":4.3,"publicationDate":"2025-05-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144071131","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":"Microstructure-driven property evolution in metal additive manufactured nickel alloy","authors":"R. Raghu ,&nbsp;P. Chandramohan ,&nbsp;D. Pradeesh kumar ,&nbsp;Amar Singh","doi":"10.1016/j.intermet.2025.108834","DOIUrl":"10.1016/j.intermet.2025.108834","url":null,"abstract":"<div><div>The laser Powder Bed Fusion (LPBF) process is vital for aerospace sector to produce components with intricate geometry for better performance. In the present study, the nickel-based superalloy CM247LC was manufactured through LPBF. Microscopically, alloy revealed the presence of carbides. In the longitudinal section, Electron Backscatter Diffraction (EBSD) exposed elongated grains and in transverse section, equiaxed clusters. Rate of cooling during solidification was calculated to be approximately 10⁶ K/s. Yield strength of the samples found higher compared to the previous research. Sources of higher strength are interpreted as higher precipitate concentrations, dislocation density, finer cellular structure, and γ′ inside cells.</div></div>","PeriodicalId":331,"journal":{"name":"Intermetallics","volume":"184 ","pages":"Article 108834"},"PeriodicalIF":4.3,"publicationDate":"2025-05-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144071132","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}