Journal of Rare Earths最新文献

{"title":"Upconversion luminescence and temperature sensing performance of Er3+ ions doped self-activated KYb(MoO4)2 phosphors","authors":"","doi":"10.1016/j.jre.2023.07.021","DOIUrl":"10.1016/j.jre.2023.07.021","url":null,"abstract":"<div><p>In this work, a series of self-activated KYb(MoO₄)₂ phosphors with various <em>x</em> at% Er³⁺ doping concentrations (<em>x</em> = 0.5, 1, 3, 5, 8, 10, 15) was synthesized by the solid-state reaction method. The phase structure of the as-prepared samples was analyzed by X-ray diffraction (XRD), XRD Rietveld refinement and Fourier transform infrared (FT-IR) spectroscopy. The as-prepared samples retain the orthorhombic structure with space group of <em>Pbcn</em> even Er³⁺ doping concentration up to 15 at%. High-purity upconversion (UC) green emission with green to red intensity ratio of 55 is observed from the as-prepared samples upon the excitation of 980 nm semiconductor laser and the optimum doping concentration of Er³⁺ ions in the self-activated KYb(MoO₄)₂ host is revealed as 3 at%. The strong green UC emission is confirmed as a two-photon process based on the power-dependent UC spectra. In addition, the fluorescence intensity ratios (FIRs) of the two thermally-coupled energy levels, namely ²H_11/2 and ⁴S_3/2, of Er³⁺ ions were investigated in the temperature region 300–570 K to evaluate the optical temperature sensor behavior of the sample. The maximum relative sensitivity (<em>S</em>_R) is determined to be 0.0069 K⁻¹ at 300 K and the absolute sensitivity (<em>S</em>_A) is determined to be 0.0126 K⁻¹ at 300 K. The <em>S</em>_A of self-activated KYb(MoO₄)₂:Er³⁺ is almost twice that of traditional KY(MoO₄)₂:Er³⁺/Yb³⁺ codoping phosphor. The results demonstrate that Er³⁺ ions doped self-activated KYb(MoO₄)₂ phosphor has promising application in visible display, trademark security and optical temperature sensors.</p></div>","PeriodicalId":16940,"journal":{"name":"Journal of Rare Earths","volume":"42 8","pages":"Pages 1507-1513"},"PeriodicalIF":5.2,"publicationDate":"2024-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46681806","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Catalytic activation of peroxodisulfate using shape-controlled cerium-manganese composite oxide for phenol degradation: Kinetics and degradation pathway investigation","authors":"","doi":"10.1016/j.jre.2023.10.008","DOIUrl":"10.1016/j.jre.2023.10.008","url":null,"abstract":"<div><p>Phenol-containing wastewater is typical organic wastewater, and its treatment is arduous. An advanced method to treat this type of wastewater is persulfate activation. Environmentally friendly cerium-manganese composite oxide materials were synthesized by hydrothermal method and applied to the phenol degradation process. Various ratios of cerium and manganese, as well as the amount of sodium hydroxide, were investigated. The solid solutions of cerium and manganese were formed and confirmed by X-ray diffraction (XRD) and transmission electron microscopy (TEM). H₂-temperature programmed reduction (H₂-TPR) and X-ray photoelectron spectroscopy (XPS) were utilized to analyze the synergistic effect of cerium and manganese. It is found that there is a transformation between Ce⁴⁺/Ce³⁺ and Mn²⁺/Mn³⁺, which makes the material more trivalent manganese and thereby increases the catalytic activity. The effect of materials in catalyzing phenol degradation by peroxodisulfate (PDS) under various preparation conditions is discussed and high-efficiency removal of phenol can be achieved and the removal rate at 180 min is close to 100%. The kinetic of this process was investigated and activation energy of phenol degradation is 62.35 kJ/mol. The degradation pathway of phenol was studied and it is found that PDS can be activated by low metal ions and the ·OH and SO₄·^– radicals play crucial roles according to the quenching experiments.</p></div>","PeriodicalId":16940,"journal":{"name":"Journal of Rare Earths","volume":"42 8","pages":"Pages 1514-1523"},"PeriodicalIF":5.2,"publicationDate":"2024-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135965861","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Luminescence properties and optical sensing behaviors of Sr2GdSbO6:Eu3+ phosphors","authors":"","doi":"10.1016/j.jre.2023.06.009","DOIUrl":"10.1016/j.jre.2023.06.009","url":null,"abstract":"<div><p>Novel orange-red Sr₂GdSbO₆:<em>x</em>Eu³⁺ (<em>x</em> = 0, 0.05, 0.1, 0.2, 0.3, 0.4, 0.5 and 0.6) phosphors were successfully prepared by the traditional high-temperature solid-state method. The results of Rietveld refinement, energy dispersive spectroscopy (EDS) spectrum and elemental mapping demonstrate that Eu³⁺ successfully replaces the Gd³⁺ sites and distributes uniformly in the particles of phosphors. The luminescence properties of Sr₂GdSbO₆:Eu³⁺ phosphors were investigated in detail. The emission spectra of the strongest emission peak is the ⁵D₀→⁷F₁ (593 nm) transition, which can emit orange-red light under 393 nm excitation. When the doping concentration of Eu³⁺ ions is <em>x</em> = 0.2, the luminescence intensity of the phosphors reaches the highest. The detailed mechanism of concentration quenching is attributed to dipole-dipole interaction. The thermal stability values of Sr₂GdSbO₆:0.2Eu³⁺ phosphors are 87%, 82% and 114% under 393, 467 and 527 nm excitations, respectively. The causes of the abnormal thermal quenching under 527 nm excitation were analyzed. Based on the abnormal thermal quenching under 527 nm excitation, the optical thermometry properties of Sr₂GdSbO₆:0.2Eu³⁺ phosphors were investigated by fluorescence intensity ratio (FIR) technique, and appreciable relative sensitivity was obtained. The results suggest that Sr₂GdSbO₆:0.2Eu³⁺ phosphors can be potentially applied to w-LEDs and optical thermometers.</p></div>","PeriodicalId":16940,"journal":{"name":"Journal of Rare Earths","volume":"42 8","pages":"Pages 1458-1469"},"PeriodicalIF":5.2,"publicationDate":"2024-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136177141","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Formation mechanism of high-temperature oxidation film on WE43 magnesium alloy and its effect on corrosion performance","authors":"Ruizhi Ding ,&nbsp;Hong Yan ,&nbsp;Fangqiang Ning ,&nbsp;Yifan Song ,&nbsp;Jinliang Xu ,&nbsp;Rongshi Chen","doi":"10.1016/j.jre.2024.07.032","DOIUrl":"10.1016/j.jre.2024.07.032","url":null,"abstract":"<div><div>The oxidation behavior of WE43 magnesium alloy in dry air at three temperatures (225, 440 and 525 °C) and the corresponding corrosion performance of samples attached to oxide film in 3.5 wt% NaCl solution was investigated. The results show that the oxide films formed at all three temperatures are a complex MgO·RE₂O₃·ZrO film with different compositions. The film formed at 225 °C is flat and dense, whose components are 3.2MgO·1.8RE₂O₃·1ZrO. The oxidation ridges begin to form, and then gradually grow into nodular oxides and form a loose and porous oxide layer as the temperature increases to 525 °C. The oxide films formed at all three temperatures improve the corrosion resistance of the alloy due to the MgO·RE₂O₃·ZrO, with the protective properties of oxide films following the order of 225 °C &gt; 440 °C &gt; 525 °C, because the dense MgO·RE₂O₃·ZrO film formed at 225 °C can provide better protection to the substrate than the loose oxide film formed at higher temperatures.</div></div>","PeriodicalId":16940,"journal":{"name":"Journal of Rare Earths","volume":"42 12","pages":"Pages 2316-2324"},"PeriodicalIF":5.2,"publicationDate":"2024-07-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142719709","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Novel mesoporous CeVWOx/TiO2 nanosheets for selective catalytic reduction of NO by NH3","authors":"Shihao Li ,&nbsp;Mengli Han ,&nbsp;Youlin Liu ,&nbsp;Ronghai Zhang ,&nbsp;Xu Wang ,&nbsp;Jianhai Wang ,&nbsp;Sasa Gu ,&nbsp;Yuesong Shen","doi":"10.1016/j.jre.2024.07.028","DOIUrl":"10.1016/j.jre.2024.07.028","url":null,"abstract":"<div><div>Herein, we report the self-sacrificial template strategy to design mesoporous layered CeVWO_<em>x</em>/TiO₂ catalysts for the selective catalytic reduction of NO by NH₃ (NH₃-SCR). As-fabricated CeVWO_<em>x</em>/TiO₂ catalysts with unique mesoporous and layered structure were successfully prepared through the synthesis of Ce,Ti-MOFs by solvothermal method, the impregnation of vanadium and tungsten in Ce,Ti-MOFs and high temperature calcination process. As NH₃-SCR catalysts, well-designed CeVWO_<em>x</em>/TiO₂ catalysts exhibit excellent SCR activity with the NO_<em>x</em> conversion of over 90% between 210 and 470 °C. Meanwhile, CeVWO_<em>x</em>/TiO₂ shows superior tolerance to water vapor and SO₂. The features of unique mesoporous layered nanostructure, surface acidity, tunable reducibility, active and the strong interaction of active metal oxide and support in CeVWO_<em>x</em>/TiO₂ nanosheets should contribute to the improved SCR performance. <em>In situ</em> diffuse reflection infrared Fourier transform spectroscopy (DRIFTS) analysis indicates that both Langmuir–Hinshelwood (L-H) and Eley-Rideal (E-R) mechanisms are present on the surface of CeVWO_<em>x</em>/TiO₂ at low temperature. This work offers a facile strategy to design and fabricate efficient 2D deNO_<em>x</em> catalyst.</div></div>","PeriodicalId":16940,"journal":{"name":"Journal of Rare Earths","volume":"43 3","pages":"Pages 500-507"},"PeriodicalIF":5.2,"publicationDate":"2024-07-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143479154","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Synergistic improvement of damping capacity and mechanical properties of magnesium alloy prepared with UHP technology","authors":"Dan Wang ,&nbsp;Peizhao Huang ,&nbsp;Ruizhi Wu ,&nbsp;Hailiang Huang ,&nbsp;Tao Zhong ,&nbsp;Cunwei Zou ,&nbsp;Yaqiang Song","doi":"10.1016/j.jre.2024.07.029","DOIUrl":"10.1016/j.jre.2024.07.029","url":null,"abstract":"<div><div>The contradictory relationship between the damping capacity and strength of metals, governed by dislocation mechanisms, poses a challenge in improving simultaneously through dislocation strengthening. Accordingly, exploring novel methods to synergistically enhance mechanical properties and damping capacity is designated as a focal research subject in recent years. The study at hand aims to tackle this challenge through the manipulation of microstructures in Mg-Y-Er-Zn-Zr alloy via ultra-high pressure (UHP) heat treatment, yielding Mg-based alloys of exceptionally lightweight with outstanding damping and mechanical characteristics. After UHP, a significant refinement in the alloy's grain size is observed, with the average grain size decreasing from 114 to 23 μm, accompanied by substantial introduction of dislocations into the matrix, along with the emergence of twin within the matrix. The tensile strength of M-6GPa-1000 alloy subjected to UHP treatment achieves 326 MPa, demonstrating a 95% increase compared to ordinary heat treatment alloys while maintaining an elongation of 11.9%. Additionally, the damping capacity value <em>Q</em>⁻¹ of M-6GPa-1000 alloy treated with UHP during the low-strain zone is 0.03, exhibiting a threefold increase compared to that of the conventionally heat-treated alloy. Through UHP treatment, the alloy's microstructure is regulated, achieving a synergistic enhancement of strength and damping capacity. The study comprehensively analyzes the synergistic improvement of mechanical and damping characteristics in the alloy. The proposed UHP technology holds significant potential for the fabrication of advanced Mg-Re components.</div></div>","PeriodicalId":16940,"journal":{"name":"Journal of Rare Earths","volume":"42 12","pages":"Pages 2279-2284"},"PeriodicalIF":5.2,"publicationDate":"2024-07-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142720157","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Microstructure evolution of extruded Mg-RE-Ag alloy during short-time heat treatment","authors":"Zehua Li ,&nbsp;Jinghuai Zhang ,&nbsp;Shujuan Liu ,&nbsp;Jiaming Hao ,&nbsp;Liyuan Liu ,&nbsp;Yuying He ,&nbsp;Haodong Zhang ,&nbsp;Xingkai Jiao ,&nbsp;Xiaobo Zhang ,&nbsp;Ruizhi Wu","doi":"10.1016/j.jre.2024.07.025","DOIUrl":"10.1016/j.jre.2024.07.025","url":null,"abstract":"<div><div>Microstructure regulation via short-time heat treatment is conducive to the optimization in the microstructure and properties of precipitable magnesium (Mg) alloys, but there is currently a lack of relevant studies. In this work, the microstructure evolution of a Mg-RE-Ag alloy during different short-time heat treatments was characterized and discussed. The results show that extreme short-time heat treatment (ESHT, e.g., 2 min) at 450–480 °C can greatly increase solute concentration in Mg matrix through the rapid re-dissolution of the second-phase and simultaneously maintain fine grains, while the ESHT at a too high temperature (e.g., 510 °C) is not suitable due to excessive grain growth and coarse second phase regenerated at grain boundaries. It is found that 480 °C is the approximate critical temperature for appropriate ESHT, and further prolongation of the time will lead to excessive grain growth. It is suggested that in addition to grain boundary migration, grain rotation is activated, resulting in the annihilation of high-angle grain boundaries with relatively low misorientation, as well as the reduction in the ability of the residual second phase to pin grain boundaries. In addition, the reasons for the abnormal grain boundary segregation and grain boundary continuous phase were analyzed from the perspective of interfacial energy. This study provides a basis for effective microstructure regulation of Mg-RE alloys.</div></div>","PeriodicalId":16940,"journal":{"name":"Journal of Rare Earths","volume":"42 12","pages":"Pages 2350-2361"},"PeriodicalIF":5.2,"publicationDate":"2024-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141846447","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"In-situ synthesis of Z-scheme CeO2@WO3 heterojunction with aromatic rings as electron medium for efficient photocatalytic degradation of perfluorobutane sulfonate","authors":"Shihai Cao ,&nbsp;Haocheng Yang ,&nbsp;Cheng Cheng ,&nbsp;Jinheng Dai ,&nbsp;Shuaishuai Lu ,&nbsp;Yao Lu","doi":"10.1016/j.jre.2024.07.015","DOIUrl":"10.1016/j.jre.2024.07.015","url":null,"abstract":"<div><div>Photocatalytic technology has been proven to be a simple and effective method for degrading recalcitrant organic pollutants. In this study, a series of Z-scheme heterojunction nanocomposites composed of CeO₂ and terephthalic acid-modified WO₃ was prepared and further used as photocatalysts for perfluorobutane sulfonate (PFBS) degradation. In this design, terephthalic acid was used as an electron recombination center and heterojunction mediator, which effectively enhances the migration ability of electron–hole pairs and the physicochemical stability of the catalyst. In addition, <em>in situ</em> synthesis of CeO₂ onto the WO₃ surface by the coordinate bond between terephthalic acid and Ce ions can avoid CeO₂ agglomeration. As a result, the CeO₂@WO₃ photocatalyst exhibits excellent PFBS degradation ability (94% for CeO₂@WO₃ vs. 19% for CeO₂). After the fifth cyclic degradation experiment, the CeO₂@WO₃ photocatalyst still maintains stable degradation efficiency. Furthermore, the reaction mechanism of the PFBS in CeO₂@WO₃ photocatalytic process was analyzed by free radical trapping experiment and liquid chromatography tandem mass spectrometry (LC-MS) technique. This study provides new insights for constructing Z-scheme heterojunction and demonstrates that CeO₂@WO₃ photocatalysts possess a promising prospect for degrading PFBS pollutants.</div></div>","PeriodicalId":16940,"journal":{"name":"Journal of Rare Earths","volume":"43 3","pages":"Pages 470-479"},"PeriodicalIF":5.2,"publicationDate":"2024-07-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141840983","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Aggregation behavior of Ce–Mg–Mn–O–S composite inclusions in silicon-killed bearing steel and their evolution during heat treatment","authors":"Zirui Yan ,&nbsp;Wan Zheng ,&nbsp;Huirong Zhang ,&nbsp;Guo Zhao ,&nbsp;Guangqiang Li ,&nbsp;Jing Liu","doi":"10.1016/j.jre.2024.07.016","DOIUrl":"10.1016/j.jre.2024.07.016","url":null,"abstract":"<div><div>In order to mitigate the harm of alumina, calcium aluminate, and magnesium aluminum spinel inclusions on the fatigue performance of bearing steel, the effect of Ce–Mg composite treatment on the cleanliness of silicon-killed GCr15 bearing steel and the evolution of Ce–Mg–Mn–O–S composite inclusions during heat treatment of the steels at 1523 K were investigated in this present work. The results indicate that the cleanliness of S2 with 0.0045 wt% Ce and 0.0016 wt% Mg is better than that in S1 with 0.0020 wt% Ce and 0.0011 wt% Mg, which is attributed to the more effective removal of Ce–Mg–Mn–O–S composite inclusions, with help of good aggregation capacity of Ce-containing inclusions and small volume density of Mg-containing inclusions, due to the increase of rare earth and magnesium content. The aspect ratio and area fraction of the Ce–Mg–Mn–O–S composite inclusions in as-cast steel decrease significantly with isothermal treatment at 1523 K for 150 min, due to the effect of (i) Ostwald aging mechanism of inclusions and (ii) sulfide solid solution during isothermal treatment. With the increase of isothermal treatment time from 150 to 550 min, the aspect ratio and area fraction of the inclusions in S0 (untreated steel) and S1 decrease slightly, because spheroidization and solid solution of inclusions reach their basic equilibrium at 1523 K. However, the aspect ratio and area fraction of the Ce–Mg–Mn–O–S composite inclusions in S2 actually increase, and the inclusions evolve into three-phase (two-phase) inclusions, which is attributed to (iii) transformation of phase compositions in inclusions and interfacial reaction between inclusions and steel matrix during isothermal heating. Therefore, the control of inclusions in silicon-killed bearing steel with Ce and Mg composite treatment should be combined with specific heat treatment processes and appropriate rare earth and magnesium contents, to minimize the damage of inclusions on the fatigue performance of bearing steel products.</div></div>","PeriodicalId":16940,"journal":{"name":"Journal of Rare Earths","volume":"43 3","pages":"Pages 628-640"},"PeriodicalIF":5.2,"publicationDate":"2024-07-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141842095","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"High strength and elongation of Mg-Gd-Nd-Zr alloy obtained by synergistic action of high-speed extrusion and short-time aging treatment","authors":"Simin Shen ,&nbsp;Guangxiao Ren ,&nbsp;Xijuan Cao ,&nbsp;Hongxia Wang ,&nbsp;Binshan Wang ,&nbsp;Jin Wang ,&nbsp;Lifei Wang ,&nbsp;Weili Cheng ,&nbsp;Kwangseon Shin","doi":"10.1016/j.jre.2024.07.008","DOIUrl":"10.1016/j.jre.2024.07.008","url":null,"abstract":"<div><div>Magnesium–gadolinium (Mg–Gd)-based alloys have excellent high-temperature properties and the addition of two heterogeneous rare earth (RE) elements may promote the formation of secondary phase for better-strengthened properties. Herein, novel Mg-7Gd-2Nd-0.5Zr (wt%) alloys were prepared by synergistic reaction induced by high-speed extrusion (EX) and short-time aging treatment (AT). The microstructures, textures, and mechanical properties of the resulting alloys were then comprehensively studied by various analytical methods. The result reveals that the as-cast Mg-7Gd-2Nd-0.5Zr (wt%) alloy is composed of <em>α</em>-Mg matrix and Mg₅(Gd,Nd) phase with bony and continuous networks at grain boundaries. The microstructure presents coarse deformed grains and fine recrystallized grains after high-speed EX, and formation of typical <span><math><mrow><mrow><mo>(</mo><mn>0001</mn><mo>)</mo></mrow><mo>∥</mo></mrow></math></span> ED extruded fiber texture and [<span><math><mrow><mover><mn>1</mn><mo>¯</mo></mover><mn>2</mn><mover><mn>1</mn><mo>¯</mo></mover><mn>1</mn></mrow></math></span>] RE texture is observed. The EX22 sample exhibits more Mg₅(Gd,Nd) precipitated phases, fuller DRXed grains, and shorter peak aging times than the EX9 sample. After the AT at 250 °C, the proportion of deformed grains decreases due to static recrystallization, which leads to a reduction in the average grain size and weakening of the texture intensity. Therefore, combined effect of all strengthening mechanisms aids in achieving balance of high-strength and high-elongation for Mg-7Gd-2Nd-0.5Zr (wt%) alloy. The values of yield strength (YS), ultimate tensile strength (UTS), and elongation (EL) of EX22-A sample at room temperature are found to be 292.5 MPa, 350.6 MPa, and 24.3%, respectively. Overall, this study provides relevant experimental basis and theoretical guidance for the development of high-strength Mg-RE alloys, which are useful for future consideration.</div></div>","PeriodicalId":16940,"journal":{"name":"Journal of Rare Earths","volume":"42 12","pages":"Pages 2196-2207"},"PeriodicalIF":5.2,"publicationDate":"2024-07-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141705972","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}