Journal of Alloys and Compounds最新文献

{"title":"Closed-Loop Self-Supplied Lithium Regeneration of Spent LiFePO4 via Citric Acid–H₂O₂ Selective Leaching: Lattice Repair, Performance Recovery, and Economic Viability","authors":"Zhen Yang, Chenxin Xu, Yan Song, Wei Gao, Liuqi Wang, Xinyue Zhang, Wanting Liu, Xiaohua Huang, Yan Lin","doi":"10.1016/j.jallcom.2026.191501","DOIUrl":"https://doi.org/10.1016/j.jallcom.2026.191501","url":null,"abstract":"To address the complexity, high energy consumption and reliance on commercial lithium salts in conventional LFP recycling, this study develops a closed‑loop lithium‑replenishment regeneration process using spent LFP powder as the sole raw material. A portion of the spent powder is leached in a citric acid–H₂O₂ system to selectively recover high‑purity Li<ce:inf loc=\"post\">3</ce:inf>PO<ce:inf loc=\"post\">4</ce:inf>, which is then used as the self‑supplied lithium source for solid‑state sintering with the remaining powder, enabling precise lattice repair and lithium compensation. Under optimal conditions, the lithium leaching efficiency reaches 97.68%. XRD and XPS results confirm complete elimination of FePO<ce:inf loc=\"post\">4</ce:inf> impurities, restoration of lattice distortion and full reduction of Fe³⁺ to Fe²⁺. The regenerated LFP exhibits significantly reduced polarization and charge‑transfer resistance, delivering discharge capacities of 167.23 mAh g⁻¹ at 0.2<ce:hsp sp=\"0.25\"></ce:hsp>C and 145.98 mAh g⁻¹ at 1<ce:hsp sp=\"0.25\"></ce:hsp>C, with 98.7% capacity retention after 100 cycles. This fully closed-loop process eliminates the need for external lithium salts, while being simple, eco‑friendly and cost‑effective, yielding a net profit of 24.01 CNY per kilogram of spent LFP, demonstrating strong industrial promise.","PeriodicalId":344,"journal":{"name":"Journal of Alloys and Compounds","volume":"31 1","pages":"191501"},"PeriodicalIF":6.2,"publicationDate":"2026-10-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149123343","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":"Effect of rapid thermomechanical fatigue pre-damage on the residual isothermal low-cycle fatigue behavior of a DD6 single-crystal superalloy with a film-cooling hole","authors":"Houjun Qin, Changyou Xu, Yantao Sun, Muwei Cheng, Renjie Jiang, Tianyu Fan, Pengfei Ji, Hongbin Zhou, Yongzhao Lv, Jianan Song, Jia Huang, Xiaoguang Yang","doi":"10.1016/j.jallcom.2026.191497","DOIUrl":"https://doi.org/10.1016/j.jallcom.2026.191497","url":null,"abstract":"Turbine-blade materials often experience sequential thermomechanical fatigue (TMF) and low-cycle fatigue (LCF) loading during service, yet the mechanism governing residual LCF resistance after TMF pre-damage remains unclear. DD6 nickel-based single-crystal superalloy specimens with a film-cooling hole (FCH) and smooth round-bar (RB) geometries were subjected to TMF preloading followed by LCF testing at 980 °C. Residual LCF resistance was evaluated using normalized life fractions, and the damage-transfer process was investigated through fractography, longitudinal-section microscopy, γ/γ′ characterization, EBSD analysis, and microstructure-informed γ/γ′ two-phase cyclic-plasticity simulations. The results show that residual LCF life does not follow a linear life-fraction relationship. At a TMF pre-damage fraction of approximately 25%, the normalized residual LCF life fractions were approximately 0.260 for the FCH specimen and 0.070 for the RB specimen under their respective baseline-normalized conditions. In the FCH specimen, TMF-induced damage was mainly localized near the hole edge, and subsequent LCF failure involved further crack propagation and damage accumulation from this localized region. In contrast, the RB specimen developed a more spatially distributed damage field across the gauge section, resulting in multiple potential sites for crack initiation, interaction, and coalescence during subsequent LCF loading. When the TMF pre-damage fraction reached approximately 45% or higher, both specimen types exhibited very low residual LCF resistance as accumulated damage became sufficiently severe to dominate subsequent failure. These findings demonstrate that residual LCF resistance after TMF preloading is governed not only by the consumed TMF life fraction but also by the spatial localization and connectivity of TMF-induced microstructural damage.","PeriodicalId":344,"journal":{"name":"Journal of Alloys and Compounds","volume":"297 1","pages":"191497"},"PeriodicalIF":6.2,"publicationDate":"2026-10-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149123345","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":"Manufacturing and comprehensive characterization of hot-extruded Al7075/Mg bimetal composites: Influence of core alloy chemistry on interfacial microstructure and mechanical, corrosion, and wear properties","authors":"Kenza Djebari, Emre Ozturk, Nurlan Gurbanov, Konul Jabbarova, Süleyman Yaşın, Hayrettin Ahlatci","doi":"10.1016/j.jallcom.2026.191480","DOIUrl":"https://doi.org/10.1016/j.jallcom.2026.191480","url":null,"abstract":"The relationships among the microstructural, mechanical, corrosion, and wear properties of Al7075/AS21, Al7075/AZ91, and Al7075/ZA62 bimetal composites were investigated. The Mg-based core alloys were first cast into cylindrical metallic molds with a diameter of 16 mm, after which molten Al7075 alloy was cast around the cores to produce bimetallic billets with an outer diameter of 34 mm. The resulting bimetals were subsequently hot-extruded at 350 °C with an extrusion ratio of 3:1 and a deformation rate of 0.3 mm/s. Microstructural characterization revealed the formation of metallurgical bonding between the Al7075 shell and Mg-alloy cores. At the same time, the type and distribution of interfacial phases varied depending on the chemical composition of the core alloy. Hardness measurements showed that the Al7075/ZA62 bimetal composite exhibited the highest hardness values across the Mg core, interface, and Al7075 shell regions. In particular, its interfacial hardness was approximately 18% higher than that of the Al7075/AZ91 composite. Mechanical testing further demonstrated that the Al7075/ZA62 composite exhibited the highest compressive strength and interfacial bonding strength. Corrosion studies performed in 3.5 wt% NaCl solution indicated that the Al7075/AS21 composite exhibited the best corrosion resistance. Wear test results revealed that the Al7075/ZA62 composite exhibited superior wear resistance compared with the other bimetal composites. The results demonstrate that the chemical composition of the Mg-based core alloy plays a critical role in determining the interfacial characteristics and, consequently, the mechanical, corrosion, and wear performance of Al7075/Mg bimetallic composites.","PeriodicalId":344,"journal":{"name":"Journal of Alloys and Compounds","volume":"45 1","pages":"191480"},"PeriodicalIF":6.2,"publicationDate":"2026-10-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149123342","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":"Synergistic regulation of strength, ductility and micro-galvanic degradation in biodegradable Fe-N membranes","authors":"Xinyuan Tian, Yonglin Yan, Ruimin Tang, Qianli Huang, Lin Guo, Jianguo Lin, Yilong Dai","doi":"10.1016/j.jallcom.2026.191508","DOIUrl":"https://doi.org/10.1016/j.jallcom.2026.191508","url":null,"abstract":"To address the clinical issue of secondary surgery for membrane removal in guided bone regeneration (GBR), a degradable Fe-N specimen was fabricated via a combined nitriding, rolling and annealing process. Gas nitriding at 520 ℃ was employed to form Fe<ce:inf loc=\"post\">4</ce:inf>N reinforcing phases, followed by 75% cold rolling to refine the microstructure and introduce high-density dislocations, and short-term annealing at 850 ℃ to promote recrystallization, thereby synergistically optimizing the strength, ductility and degradation performance of the specimen. Mechanical tests show that the specimen achieves a yield strength of 496 MPa, an ultimate tensile strength of 821 MPa, and a uniform elongation of 21.09%, exhibiting superior comprehensive mechanical properties to clinically used pure titanium and biodegradable Mg/Zn specimen membranes. Dispersed nano-sized Fe<ce:inf loc=\"post\">4</ce:inf>N particles (49.96 nm) strengthen the matrix through the Orowan looping mechanism. The microgalvanic effect between Fe<ce:inf loc=\"post\">4</ce:inf>N and α-Fe regulates matrix corrosion, delivering a steady-state corrosion rate of 0.017 ± 0.002 mm/year over 56 days. In vitro experiments verify that the specimen presents no obvious cytotoxicity and possesses promising potential for clinical translation.","PeriodicalId":344,"journal":{"name":"Journal of Alloys and Compounds","volume":"21 1","pages":"191508"},"PeriodicalIF":6.2,"publicationDate":"2026-10-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149123346","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":"Multilayer interlocked microstructured hydrogel pressure sensor with MXene/liquid metal dual conductive fillers for high-performance wearable sensing","authors":"Mingyang Lv,Meng Wang,Gongdong Wang,Hongyu Liu,Tianjiao Liu","doi":"10.1016/j.jallcom.2026.191173","DOIUrl":"https://doi.org/10.1016/j.jallcom.2026.191173","url":null,"abstract":"","PeriodicalId":344,"journal":{"name":"Journal of Alloys and Compounds","volume":"78 1","pages":"191173"},"PeriodicalIF":6.2,"publicationDate":"2026-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149020324","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 first ternary intermetallic compound in the Re–Al–Ga system: Structure, stability, and low-temperature behavior of Re4Al7.22Ga3.78","authors":"Logan S. Breton,Binod K. Rai,Mark D. Smith,Jake W. Amoroso","doi":"10.1016/j.jallcom.2026.191172","DOIUrl":"https://doi.org/10.1016/j.jallcom.2026.191172","url":null,"abstract":"","PeriodicalId":344,"journal":{"name":"Journal of Alloys and Compounds","volume":"22 1","pages":"191172"},"PeriodicalIF":6.2,"publicationDate":"2026-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149020693","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":"Solvothermal construction of V2CTx/VSe2/Se triphase heterostructures for high performance aqueous zinc-Ion batteries","authors":"Yuqi Chen,Ying Gao,Ji’a Yang,Liang Li,Aiguo Zhou,Libo Wang","doi":"10.1016/j.jallcom.2026.191469","DOIUrl":"https://doi.org/10.1016/j.jallcom.2026.191469","url":null,"abstract":"","PeriodicalId":344,"journal":{"name":"Journal of Alloys and Compounds","volume":"155 1","pages":"191469"},"PeriodicalIF":6.2,"publicationDate":"2026-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149092507","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":"Achieving superior strength-ductility synergy in Co-free Al0.4Cr0.5Fe2Ni0.9 high-entropy alloy at room and cryogenic temperature via coupling partial recrystallization and hierarchical precipitates","authors":"Yiming Lai,Zhibin Chen,Junchen Liu,Dezhi Zhu,Yongchi Wu,Hao Luo,Lei Fan,Jie Wang,Shufen Chu","doi":"10.1016/j.jallcom.2026.191595","DOIUrl":"https://doi.org/10.1016/j.jallcom.2026.191595","url":null,"abstract":"","PeriodicalId":344,"journal":{"name":"Journal of Alloys and Compounds","volume":"10 1","pages":"191595"},"PeriodicalIF":6.2,"publicationDate":"2026-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149092520","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-strength zero thermal expansion Ho2Fe17 composites via in situ phase engineering","authors":"Jiacheng Lu,Xuefei Miao,Zhubing Yan,Fengqi Zhang,Tae-Hoon Kim,Feng Xu,Francesco Cugini,Jung-Goo Lee","doi":"10.1016/j.jallcom.2026.191482","DOIUrl":"https://doi.org/10.1016/j.jallcom.2026.191482","url":null,"abstract":"","PeriodicalId":344,"journal":{"name":"Journal of Alloys and Compounds","volume":"23 1","pages":"191482"},"PeriodicalIF":6.2,"publicationDate":"2026-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149092529","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":"Synergism between oxygen vacancies and Fe-Nx in N-doped Fe3O4@CNTs for enhanced oxygen reduction reaction","authors":"Xiaojun Zhou,Wenwen Yang,Chunmei Zeng,Hejun Gao,Yunwen Liao,Kunpeng Song","doi":"10.1016/j.jallcom.2026.191471","DOIUrl":"https://doi.org/10.1016/j.jallcom.2026.191471","url":null,"abstract":"","PeriodicalId":344,"journal":{"name":"Journal of Alloys and Compounds","volume":"27 1","pages":"191471"},"PeriodicalIF":6.2,"publicationDate":"2026-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149092543","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}