{"title":"Crystal structure, improvement of nanostructure, electrical and magnetic properties of the BiFeO3/Sr0.6Ba0.4Nb2O6/SrRuO3/MgO(001) heterostructure","authors":"Ya.Yu. Matyash, N.V. Makinyan, D.V. Stryukov, K.M. Zhidel, A.V. Pavlenko","doi":"10.1016/j.jallcom.2025.182662","DOIUrl":"10.1016/j.jallcom.2025.182662","url":null,"abstract":"<div><div>The crystal structure, nanostructure, magnetic response, dielectric and ferroelectric properties of BiFeO<sub>3</sub>/Sr<sub>0.6</sub>Ba<sub>0.4</sub>Nb<sub>2</sub>O<sub>6</sub>/SrRuO<sub>3</sub>/MgO(001) and Sr<sub>0.6</sub>Ba<sub>0.4</sub>Nb<sub>2</sub>O<sub>6</sub>/SrRuO<sub>3</sub>/MgO(001) heterostructures were studied. The nanoscale Sr<sub>0.6</sub>Ba<sub>0.4</sub>Nb<sub>2</sub>O<sub>6</sub>(120 nm) and BiFeO<sub>3</sub>(120 nm) films were grown by the radio frequency cathode sputtering in an oxygen atmosphere and sequentially deposited on a SrRuO<sub>3</sub>(150 nm)/MgO(001) substrate. The BiFeO<sub>3</sub> and Sr<sub>0.6</sub>Ba<sub>0.4</sub>Nb<sub>2</sub>O<sub>6</sub> layers obtained are epitaxial. Despite the deposition of the BiFeO<sub>3</sub> layer on top of the Sr<sub>0.6</sub>Ba<sub>0.4</sub>Nb<sub>2</sub>O<sub>6</sub> layer, the BiFeO<sub>3</sub> crystallographic axes were formed parallel to the MgO(001) substrate axes. Deposition of BiFeO<sub>3</sub> layer on a Sr<sub>0.6</sub>Ba<sub>0.4</sub>Nb<sub>2</sub>O<sub>6</sub> layer reduces roughness of the two-layer heterostructure. The voltage-induced regions (±10 V) exhibit stability more than 6 h in both Sr<sub>0.6</sub>Ba<sub>0.4</sub>Nb<sub>2</sub>O<sub>6</sub>/SrRuO<sub>3</sub>/MgO(001) and BiFeO<sub>3</sub>/Sr<sub>0.6</sub>Ba<sub>0.4</sub>Nb<sub>2</sub>O<sub>6</sub>/SrRuO<sub>3</sub>/MgO(001) heterostructures. The two-layer heterostructure demonstrates superior temperature stability of dielectric parameters compared to the single layer thin film. While magnetic response is absent in bulk BiFeO<sub>3</sub>, there is one in BiFeO<sub>3</sub>/Sr<sub>0.6</sub>Ba<sub>0.4</sub>Nb<sub>2</sub>O<sub>6</sub>/SrRuO<sub>3</sub>/MgO(001) two-layer heterostructure. Thus, the formation of two-layer multiferroic heterostructure led to improvement of its nanostructure, ferroelectric, dielectric and magnetic properties in comparison with corresponding single layer thin films.</div></div>","PeriodicalId":344,"journal":{"name":"Journal of Alloys and Compounds","volume":"1038 ","pages":"Article 182662"},"PeriodicalIF":6.3,"publicationDate":"2025-07-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144737727","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}
Annamalai Raja , Karuppaiah Selvakumar , Misook Kang
{"title":"Synergistic enhancement of oxygen evolution and photocatalytic activity in NiFeMo-LDH/WO₃ hybrids for sustainable water splitting and pollutant degradation","authors":"Annamalai Raja , Karuppaiah Selvakumar , Misook Kang","doi":"10.1016/j.jallcom.2025.182643","DOIUrl":"10.1016/j.jallcom.2025.182643","url":null,"abstract":"<div><div>Renewably driven, sustainable water electrolysis requires robust, efficient, and cost-effective catalysts. In this study, we describe the fabrication of NiFeMo layered double hydroxide (NiFeMo-LDH) doped with WO₃ as electrocatalysts for the oxygen evolution reaction (OER) in alkaline media using a simple hydrothermal process. The best-performing NiFeMo-LDH-WO₃ electrocatalysts required an overpotential of 197 mV to achieve a current density of 10 mA cm⁻², with a low Tafel slope of 58 mV dec⁻¹ . The low overpotential is attributed to the synergistic effects of the multi-metal system (Ni, Fe, and Mo) and the abundance of active sites provided by the amorphous structure. The electrolyzer outperformed state-of-the-art precious metal-based devices in stability, maintaining performance after ten days of continuous operation at a high current density of 0.5 Acm⁻². Additionally, the photocatalytic efficiency of the NiFeMo-LDH-WO₃ hybrid was evaluated using ciprofloxacin (CIP) as a model pollutant. The catalyst eliminated 99.5 % of CIP within 70 min under visible light. The electron transfer mechanism was also investigated using the synthesized catalyst.</div></div>","PeriodicalId":344,"journal":{"name":"Journal of Alloys and Compounds","volume":"1038 ","pages":"Article 182643"},"PeriodicalIF":6.3,"publicationDate":"2025-07-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144748073","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}
Peiyuan Fan, Yufeng Huang, Jiayi Liu, Wensheng Liu, Yao Wang, Yunzhu Ma
{"title":"Preparation of high strength and tough fine grained W-Ta-Re alloy via high energy ball milling and spark plasma sintering","authors":"Peiyuan Fan, Yufeng Huang, Jiayi Liu, Wensheng Liu, Yao Wang, Yunzhu Ma","doi":"10.1016/j.jallcom.2025.182651","DOIUrl":"https://doi.org/10.1016/j.jallcom.2025.182651","url":null,"abstract":"In this study, tantalum and rhenium elements were successfully incorporated into the body-centered cubic structure of tungsten through mechanical alloying, resulting in the fabrication of a novel fine-grained W-Ta-Re alloy via spark plasma sintering. The microstructure, phase composition, and alloying reaction mechanisms of the solutionized powder were thoroughly investigated. For the sintered alloy, we examined the influence of tantalum (Ta) and rhenium (Re) concentration on both microstructural characteristics and mechanical properties. The incorporation of tantalum not only facilitated solid solution strengthening but also refined the grain size to 3.6±1.2μm, significantly enhancing the strength of the alloy. Meanwhile, rhenium addition introduced an alternative dislocation motion mechanism that improved the plastic deformation capacity of the material. The ultimate compressive strength exceeded 3000<!-- --> <!-- -->MPa with a compression strain surpassing 45%. The synergistic effect of these two elements resulted in an alloy exhibiting exceptional strength coupled with commendable ductility. Furthermore, in-situ generated oxide and carbide particles within the matrix demonstrated favorable interface compatibility, effectively pinning dislocations and promoting their accumulation thereby further augmenting the material's properties. This research offers new insights into high-strength tungsten alloys development while providing guidance for advancing multi-element synergistically strengthened tungsten alloys.","PeriodicalId":344,"journal":{"name":"Journal of Alloys and Compounds","volume":"54 1","pages":""},"PeriodicalIF":6.2,"publicationDate":"2025-07-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144737617","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 laser energy density on the microstructure and corrosion behaviour of AlCoCrFeNi2.1 EHEA coatings by laser cladding","authors":"Haiyang Long, Zhen Dong, Litong Feng, Bingwen Lu, Xingchen Yan, Hao Qiu, Haisheng Li, Zhongqiang Liu, Fuhai Li, Zhanshan Ma, Yongliang Gui","doi":"10.1016/j.jallcom.2025.182666","DOIUrl":"https://doi.org/10.1016/j.jallcom.2025.182666","url":null,"abstract":"This work elaborated the influence of laser energy density on the microstructure and corrosion behaviour of AlCoCrFeNi<sub>2.1</sub> EHEA (eutectic high-entropy alloy) coatings by laser cladding. The results show that the coatings with different energy densities are composed of face-centered cubic (FCC) and body-centered cubic (BCC) biphasic structures. At low laser energy densities, the coatings show a lamellar eutectic structure. With the increase of laser energy density, the grains gradually coarsen and the lamellar structure disappears. The microhardness of the coating shows a decreasing trend, with a maximum of 325 HV<sub>0.2</sub> at 45<!-- --> <!-- -->J/mm<sup>2</sup>. The increase of the phase content of the FCC structure leads to the increase of the corrosion resistance of the coatings, and the AlCoCrFeNi<sub>2.1</sub> EHEA coatings show excellent corrosion resistance at 70<!-- --> <!-- -->J/mm<sup>2</sup>. The shapes of FCC and BCC structural phases change due to the enrichment and depletion of Al element. The BCC structural phase evolved into three structures, including lamellar, cytosolic, and spherical structures. The passivation behavior and local corrosion of AlCoCrFeNi<sub>2.1</sub> EHEA in NaCl solution are significantly affected by Cl<sup>-</sup>. The corrosion behavior is pitting corrosion and selective dissolution of Ni-Al-rich phase. This study systematically reveals the regulation of the key process parameter of laser energy density on the microstructure and performance of AlCoCrFeNi<sub>2.1</sub> EHEA coating, providing a direct theoretical basis and experimental support for optimizing the laser cladding process to prepare high-performance EHEA coatings.","PeriodicalId":344,"journal":{"name":"Journal of Alloys and Compounds","volume":"28 1","pages":""},"PeriodicalIF":6.2,"publicationDate":"2025-07-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144737654","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}
Jing Fang , Sheng Zhou , Yunfeng Guan , Lidan Tan , Xuanke Li , Hui Zhu , Qin Zhang , Zhijun Dong , Ye Cong
{"title":"Bifunctional Zn/F Co-doping in P2-type cathodes: Spatial suppression of phase transition and oxygen redox degradation for high-voltage sodium-ion batteries","authors":"Jing Fang , Sheng Zhou , Yunfeng Guan , Lidan Tan , Xuanke Li , Hui Zhu , Qin Zhang , Zhijun Dong , Ye Cong","doi":"10.1016/j.jallcom.2025.182645","DOIUrl":"10.1016/j.jallcom.2025.182645","url":null,"abstract":"<div><div>The P2-type Na<sub>0.67</sub>Ni<sub>0.33</sub>Mn<sub>0.67</sub>O<sub>2</sub> phase with well-ordered transition-metal layers demonstrates promising sodium storage capability attributed to its multi-electron redox activity. Nevertheless, dynamic phase evolution during high-voltage cycling (>4.0 V vs Na/Na<sup>+</sup>) leads to lattice oxygen destabilization and crystallographic symmetry disruption. Herein, we present a novel Zn/F co-doping approach to modify Na<sub>0.67</sub>Ni<sub>0.27</sub>Mn<sub>0.67</sub>Zn<sub>0.05</sub>O<sub>1.95</sub>F<sub>0.05</sub> cathode material for SIBs. The dual-ion doping of Zn²⁺ and F⁻ is designed to improve both the structural stability and electrochemical performance. Specifically, the F-doping promotes reversible oxygen redox reactions and accelerates Na⁺ diffusion, while also forming robust transition metal-fluorine (TM-F) bonds that inhibit cation migration and alleviate lattice oxygen loss. Meanwhile, Zn-doping helps to stabilize the transition metal oxide (TMO₂) layers, preventing their sliding and suppressing the detrimental P2-O2 phase transition. As a result, the P2-Na<sub>0.67</sub>Ni<sub>0.27</sub>Mn<sub>0.67</sub>Zn<sub>0.05</sub>O<sub>1.95</sub>F<sub>0.05</sub> cathode delivers an initial specific capacity of 126.1 mAh g<sup>−1</sup> at 0.1 C, a discharge capacity of 71.7 mAh g<sup>−1</sup> at 5 C and 89.7 % capacity retention after 100 cycles at 0.1 C. This work provides a co-doping stabilization strategy for effectively addressing the voltage decay and capacity fading challenges in sodium-ion battery cathodes.</div></div>","PeriodicalId":344,"journal":{"name":"Journal of Alloys and Compounds","volume":"1038 ","pages":"Article 182645"},"PeriodicalIF":6.3,"publicationDate":"2025-07-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144737735","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":"Enhancement of thermal conductivity and electrical insulation performance of BN/Silicone Gel composite through surface modification with silane coupling agents","authors":"Yu Zhang, Likun Zang, Yuanqiang Chen","doi":"10.1016/j.jallcom.2025.182630","DOIUrl":"https://doi.org/10.1016/j.jallcom.2025.182630","url":null,"abstract":"To keep up with the advancement of electronic equipment, it is necessary to improve the thermal conductivity and electrical insulation performances of composites. The best candidate material is hexagonal boron nitride (h-BN). In this work, in order to simultaneously enhance the thermal conductivity and electrical insulation performances of the composites, we created BN/Silicone Gel (SG) composites through introducing modified hexagonal boron nitride (f-h-BN) and spherical boron nitride (S-BN). The results show that f-h-BN/S-BN/SG composites exhibits outstanding thermal conductivity and electrical insulation performances simultaneously and the performance is still very good even after the aging treatment. When f-h-BN/S-BN is filled to 25phr/5phr, the thermal conductivity is 0.663<!-- --> <!-- -->W/m·K, 3.0 times that of the pristine SG. It also exhibits ideal electrical insulating properties with a volume electrical resistivity of 1.21×10<sup>15</sup> Ω∙cm and breakdown strength of 44.28<!-- --> <!-- -->kV/mm, 1.7 times that of the pristine SG. This work provides an effective way for improving the thermal and electrical insulation properties of SG for electronics and electrical engineering applications.","PeriodicalId":344,"journal":{"name":"Journal of Alloys and Compounds","volume":"24 1","pages":""},"PeriodicalIF":6.2,"publicationDate":"2025-07-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144737563","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}
Jiwon Park , Jae H. Kim , Sangwon Lee , Namhyun Kang , Jae-Keun Hong
{"title":"Microstructural refinement and strength-ductility optimization in Ti-15Zr alloys via cobalt microalloying","authors":"Jiwon Park , Jae H. Kim , Sangwon Lee , Namhyun Kang , Jae-Keun Hong","doi":"10.1016/j.jallcom.2025.182633","DOIUrl":"10.1016/j.jallcom.2025.182633","url":null,"abstract":"<div><div>This study examines the influence of minor cobalt (Co) additions on the microstructural evolution and mechanical properties of Ti-15Zr alloys subjected to thermomechanical processing. Alloys containing up to 2 wt% Co were prepared via plasma arc melting, followed by homogenization, hot rolling, and cold rolling. Microstructural observations using optical microscopy and SEM showed that Co addition refined the prior β grain structure and promoted equiaxed α-phase formation. This refinement is attributed to solute drag during solidification, driven by Co’s high growth restriction factor (Q-value), which suppressed grain coarsening and enhanced dynamic recrystallization. Tensile testing revealed that strength increased with Co content, while ductility was preserved up to 1 wt% Co. The 1Co alloy exhibited the best strength-ductility balance in both hot- and cold-rolled states. In contrast, the 2Co alloy, although stronger, exhibited reduced elongation due to grain boundary instability, and limited strain hardening. EBSD analysis confirmed that the 1Co alloy developed a refined and isotropic α-phase structure, a weakened and broadened basal texture along the transverse direction, and favorable conditions for prismatic slip activation. These features were supported by uniform KAM distributions, indicating enhanced slip compatibility and reduced intragranular strain localization. TEM analysis further revealed uniform dislocation structures and effective dynamic recovery in the 1Co alloy, whereas the 2Co alloy exhibited dense dislocation tangles and planar strain bands, consistent with severe strain localization. Quantitative strengthening analysis showed that dislocation hardening was the dominant mechanism, while grain refinement and solid-solution strengthening provided only minor contributions to the overall strength increase. These findings demonstrate that 1 wt% Co is an optimal microalloying level for enhancing both strength and ductility in Ti-15Zr alloys, providing a practical design strategy for advanced biomedical and structural titanium applications.</div></div>","PeriodicalId":344,"journal":{"name":"Journal of Alloys and Compounds","volume":"1038 ","pages":"Article 182633"},"PeriodicalIF":6.3,"publicationDate":"2025-07-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144737614","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}
Poonam Diwan, Abhinandan Kumar Thakur, Priyam Kashyap Sarmah, Santosh Kumar Tamang, R Jose Immanuel, Anil Kumar, Ankur Jaiswal
{"title":"Silicon-Modified Ti-Based Refractory High Entropy Alloys for Enhanced Strength and Reduced Density","authors":"Poonam Diwan, Abhinandan Kumar Thakur, Priyam Kashyap Sarmah, Santosh Kumar Tamang, R Jose Immanuel, Anil Kumar, Ankur Jaiswal","doi":"10.1016/j.jallcom.2025.182548","DOIUrl":"https://doi.org/10.1016/j.jallcom.2025.182548","url":null,"abstract":"This study examines the effect of silicon (Si) addition on the microstructure, mechanical properties, and corrosion behavior of Ti₄Al₁.₅Cr₁.₅V₁.₅Nb₁.₅Si<sub>x</sub> (x = 0–0.75 atomic ratio) refractory high-entropy alloys (RHEAs) synthesized via vacuum arc melting. The base alloy exhibited a single-phase BCC structure, while Si addition promoted the formation of hard M₅Si₃ silicide. At 0.25 Si, the alloy achieved superior mechanical performance, with enhanced strength and ductility resulting from solid solution strengthening, grain refinement, and fine silicide dispersion. However, higher Si contents (0.50 and 0.75) led to increased brittleness due to coarse silicide growth and elemental segregation. Corrosion resistance improved initially due to stable passive film formation but deteriorated at higher Si levels owing to micro-galvanic effects and structural inhomogeneity. These results highlight that optimized Si incorporation (x = 0.25) offers a strategic pathway to develop lightweight, high-strength RHEAs with balanced mechanical integrity and corrosion resistance for extreme service environments.","PeriodicalId":344,"journal":{"name":"Journal of Alloys and Compounds","volume":"59 1","pages":""},"PeriodicalIF":6.2,"publicationDate":"2025-07-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144719507","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}
Meixia Xiao , Chenyang Liu , Haiyang Song , Cheng He , Zhijie Hu , Ying Lv , Weiling Jiang
{"title":"Double transition metals doped Ni3S2 for efficient and stable hydrogen evolution reaction: An experimental and theoretical investigation","authors":"Meixia Xiao , Chenyang Liu , Haiyang Song , Cheng He , Zhijie Hu , Ying Lv , Weiling Jiang","doi":"10.1016/j.jallcom.2025.182639","DOIUrl":"10.1016/j.jallcom.2025.182639","url":null,"abstract":"<div><div>The highly efficient, knockdown cost and ultra-durable Ni-based composite electrocatalysts are the competitive candidates for hydrogen evolution reaction (HER) in the alkaline electrolytic water industry. The design of porous Ni-based electrocatalysts via constructing heterostructures and co-doping non-precious transition metals to realize the impressive promotion of limited activity and stability remains challenging. Herein, Ni<sub>3</sub>S<sub>2</sub> deposited on porous nickel foams (Ni<sub>3</sub>S<sub>2</sub>/NF) Ni<sub>3</sub>S<sub>2</sub> with Co and Fe co-dopants on NF (Co-Fe-Ni<sub>3</sub>S<sub>2</sub>/NF) electrocatalysts were successfully prepared by a one-step hydrothermal method. Compared with Ni<sub>3</sub>S<sub>2</sub>/NF nanosheets, Co-Fe-Ni<sub>3</sub>S<sub>2</sub>/NF nanosheets exhibit preferable electrocatalytic activity and superior stability with the minor overpotentials in the alkaline HER process. Co-Fe-Ni<sub>3</sub>S<sub>2</sub>/NF nanosheets display low overpotentials and maintain the morphology during durability tests, demonstrating the excellent durability. The experimental and density functional theory results confirm that constructing heterostructures and co-doping non-precious transition metals can synergistically increase the active sites and enhance the electrical conductivity, improving the charge transfer paths in Ni<sub>3</sub>S<sub>2</sub>/NF nanosheets, thereby bringing in a faster kinetics and superior HER activity. The results demonstrate significant potential of Co-Fe-Ni<sub>3</sub>S<sub>2</sub>/NF nanosheets in electrochemical water splitting.</div></div>","PeriodicalId":344,"journal":{"name":"Journal of Alloys and Compounds","volume":"1038 ","pages":"Article 182639"},"PeriodicalIF":6.3,"publicationDate":"2025-07-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144737658","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":"Effects of Low-High Temperature Cyclic Treatment and Aging on Microstructure and Properties of ZM51 Alloy","authors":"Yiwei Li, Chen Zhong, Wenpeng Shi, Xiaowei Wei, Minglong Ma, Yongjun Li, Jiawei Yuan, Kui Zhang, Zhaoqian Sun, Guoliang Shi, Xinggang Li, Zhongkun Lin, Wei Liu, Chen Jin","doi":"10.1016/j.jallcom.2025.182627","DOIUrl":"https://doi.org/10.1016/j.jallcom.2025.182627","url":null,"abstract":"This study investigated the effects of low-high temperature cyclic treatment and aging on the microstructure, residual stress, and mechanical properties of Mg-5Zn-1Mn(wt.%) (ZM51) alloy. The results indicate that after 12<!-- --> <!-- -->h of cryogenic treatment, the type and size of the MgZn₂ phase in the alloy showed no significant change, while the residual stress decreased significantly. In contrast, the low-high temperature cyclic treatment induced dislocation multiplication and twin formation within the alloy, accompanied by a slight increase in the size of the second-phase particles and a significant increase in the compressive residual stress. Considering practical application requirements, the alloy subjected to low-high temperature cyclic treatment underwent T5 heat treatment and was subsequently furnace-cooled to room temperature after its completion. Compared to direct aging, the combined low-high-temperature cyclic treatment + aging not only promoted a more dispersed distribution of the MgZn₂ phase but also significantly increased the yield strength and ultimate tensile strength. Additionally, the alloy subjected to five cycles of low-high temperature treatment followed by T5 aging exhibits the most stable scatter distribution in tensile properties. In summary, we have developed a method that achieves synergistic optimization of strength properties and mechanical stability in ZM51 magnesium alloy while ensuring controllable residual stress. This work provides a new technical avenue for manufacturing high-reliability alloy components.","PeriodicalId":344,"journal":{"name":"Journal of Alloys and Compounds","volume":"37 1","pages":""},"PeriodicalIF":6.2,"publicationDate":"2025-07-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144719593","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}