Journal of Materials Research and Technology-Jmr&t最新文献_第7页

Enhanced corrosion behavior and SCC resistance of a cast Mg–0.4Zr alloy after hot extrusion 热挤压后铸造Mg-0.4Zr合金的腐蚀性能和抗SCC性能增强

IF 6.6 2区材料科学

Journal of Materials Research and Technology-Jmr&t Pub Date : 2025-09-16 DOI: 10.1016/j.jmrt.2025.09.109

N. Pourhasan, M. Sabbaghian, F. Pishbin, R. Mahmudi

{"title":"Enhanced corrosion behavior and SCC resistance of a cast Mg–0.4Zr alloy after hot extrusion","authors":"N. Pourhasan, M. Sabbaghian, F. Pishbin, R. Mahmudi","doi":"10.1016/j.jmrt.2025.09.109","DOIUrl":"10.1016/j.jmrt.2025.09.109","url":null,"abstract":"<div><div>The impact of hot extrusion on the stress corrosion cracking (SCC) resistance and corrosion behavior of an as-cast Mg–0.4Zr alloy was investigated. Microstructural analysis revealed that extrusion induced dynamic recrystallization (DRX), resulting in a substantial decrease in grain size from 64.5 μm in the as-cast state to 8.3 μm. To assess the SCC resistance, slow strain rate shear (SSRS) testing was employed at ambient temperature with a strain rate of 7.1 × 10<sup>−5</sup> s<sup>−1</sup>, both in air and within phosphate buffered saline (PBS) solution. The respective ultimate shear strength (USS) values recorded for the as-cast and extruded samples were 63.9 MPa and 71.6 MPa in air, which decreased to 61.1 MPa and 67.9 MPa, in the corrosive solution. Results from hydrogen evolution and electrochemical corrosion tests showed that the extruded condition provided higher resistance to corrosive solution penetration, due to a finer and more uniform grain structure, as well as the smaller size and more uniform dispersion of the Zr-rich particles. Consequently, the corrosion rate was reduced from 7.3 mm/year in the as-cast sample to 5.4 mm/year in the extruded sample. The SSRS test is a reliable approach to analyze the SCC of Mg alloys of small dimensions. The results obtained by this test were corroborated by results from immersion and electrochemical corrosion tests.</div></div>","PeriodicalId":54332,"journal":{"name":"Journal of Materials Research and Technology-Jmr&t","volume":"39 ","pages":"Pages 585-596"},"PeriodicalIF":6.6,"publicationDate":"2025-09-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145108969","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Effect of phase separation induced by Nb microalloying on the glass formation and crystallization of CuZr-based bulk metallic glasses Nb微合金化诱导相分离对cuzr基大块金属玻璃形成和结晶的影响

IF 6.6 2区材料科学

Journal of Materials Research and Technology-Jmr&t Pub Date : 2025-09-16 DOI: 10.1016/j.jmrt.2025.09.140

Hao-Ran Jiang , Hao Xu , Lin-Zhi Xu , Yi-Fan Gao , Wen-Fei Lu , Yong-Kun Mu , Yan-Dong Jia , Jingli Ren , Bo Zhang , Gang Wang

{"title":"Effect of phase separation induced by Nb microalloying on the glass formation and crystallization of CuZr-based bulk metallic glasses","authors":"Hao-Ran Jiang , Hao Xu , Lin-Zhi Xu , Yi-Fan Gao , Wen-Fei Lu , Yong-Kun Mu , Yan-Dong Jia , Jingli Ren , Bo Zhang , Gang Wang","doi":"10.1016/j.jmrt.2025.09.140","DOIUrl":"10.1016/j.jmrt.2025.09.140","url":null,"abstract":"<div><div>The effects of Nb on the glass-forming ability (GFA) and thermal stability of CuZr-based bulk metallic glasses (BMGs) remain poorly understood, particularly given the potential for phase separation in the supercooled liquid due to the positive enthalpy of mixing between Nb and both Cu and Zr. In this work, we systematically investigate the critical casting diameter, crystalline products upon heating and cooling, thermal properties, and structural and chemical evolutions at the primary crystallization stage of Nb-containing Cu–Zr–Al alloys, using a combination of experimental techniques, including X-ray diffraction, differential scanning calorimetry, scanning electron microscopy, transmission electron microscopy, atom probe tomography, and synchrotron-based small-angle X-ray scattering. Our results reveal that an appropriate Nb addition (≤1 at.%) does not significantly compromise thermal stability or alter crystalline phases and can even enhance GFA. However, at higher Nb contents (≥3 at.%), the alloy composition enters an Nb-induced miscibility gap. This triggers phase separation, leading to the deterioration of both GFA and thermal stability. A phase separation-mediated crystallization scenario is proposed to explain the altered crystallization pathway, reduced activation energy for crystallization, and the consequent decline in GFA and thermal stability. These findings provide new insights for developing BMGs or BMG composites by strategically inducing phase separation in the supercooled liquid.</div></div>","PeriodicalId":54332,"journal":{"name":"Journal of Materials Research and Technology-Jmr&t","volume":"39 ","pages":"Pages 873-884"},"PeriodicalIF":6.6,"publicationDate":"2025-09-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145120869","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Effect of Zr addition on microstructural evolution and mechanical properties of deformed and annealed Cu–Fe alloys 添加Zr对变形和退火Cu-Fe合金组织演变和力学性能的影响

IF 6.6 2区材料科学

Journal of Materials Research and Technology-Jmr&t Pub Date : 2025-09-16 DOI: 10.1016/j.jmrt.2025.09.120

Hojoon Moon , Jung-Wook Cho

{"title":"Effect of Zr addition on microstructural evolution and mechanical properties of deformed and annealed Cu–Fe alloys","authors":"Hojoon Moon , Jung-Wook Cho","doi":"10.1016/j.jmrt.2025.09.120","DOIUrl":"10.1016/j.jmrt.2025.09.120","url":null,"abstract":"<div><div>The influence of Zr addition on the microstructural evolution, recrystallization behavior, and mechanical properties of Cu–Fe alloys was investigated. Addition of 1 wt% Zr led to formation of Fe<sub>2</sub>Zr and ZrO<sub>2</sub> phases; this process resulted in grain refinement and increased dislocation density. These precipitates effectively hindered dislocation motion and contributed to strengthening mechanisms. Zr addition significantly increased the yield strength and ultimate tensile strength across a wide range of annealing temperature <em>T</em><sub><em>ANN</em></sub>. The strengthening contributions from grain-boundary refinement, work hardening, and precipitation were substantially increased, so the alloy was strengthened by ∼141.71 MPa at <em>T</em><sub><em>ANN</em></sub> = 400 °C. Additionally, at elevated <em>T</em><sub><em>ANN</em></sub>, Zr suppressed recrystallization of the Cu phase while accelerating that of the Fe phase, so the mechanical properties varied with <em>T</em><sub><em>ANN</em></sub>. These results provide new insights to guide design of high-strength, thermally stable Cu–Fe alloys for advanced structural and electronic applications.</div></div>","PeriodicalId":54332,"journal":{"name":"Journal of Materials Research and Technology-Jmr&t","volume":"39 ","pages":"Pages 461-473"},"PeriodicalIF":6.6,"publicationDate":"2025-09-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145108905","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A binder-free Graphene-Al2O3 composite coating for dual-Function metal protection 无粘结剂的双功能金属保护石墨烯- al2o3复合涂层

IF 6.6 2区材料科学

Journal of Materials Research and Technology-Jmr&t Pub Date : 2025-09-16 DOI: 10.1016/j.jmrt.2025.09.107

Yuebin Chen , Hongwei Xie , Mingzhuang Liu , Pengfei Li , Haowei Huang , Huijuan Zhang , Junyan Gao , Xia Zhao , Hong-Guang Piao , Yanliang Huang

{"title":"A binder-free Graphene-Al2O3 composite coating for dual-Function metal protection","authors":"Yuebin Chen , Hongwei Xie , Mingzhuang Liu , Pengfei Li , Haowei Huang , Huijuan Zhang , Junyan Gao , Xia Zhao , Hong-Guang Piao , Yanliang Huang","doi":"10.1016/j.jmrt.2025.09.107","DOIUrl":"10.1016/j.jmrt.2025.09.107","url":null,"abstract":"<div><div>Conductive anticorrosion coatings are critical for protecting metal infrastructure in power systems. However, integrating high conductivity with durable corrosion resistance—especially in binder-free systems—remains challenging, as conventional polymer binders often hinder charge transport and degrade structural stability. Here, we present a binder-free graphene-Al<sub>2</sub>O<sub>3</sub> composite coating prepared via a synergistic electrodeposition–electrophoresis strategy. In this architecture, graphene nanosheets form a continuous conductive network on Q235 carbon steel, while Al<sub>2</sub>O<sub>3</sub> nanoparticles enhance corrosion resistance by strengthening the barrier effect. Electrochemical analysis reveals that the optimized coating (1000 s deposition) lowers corrosion current density by 66 % and increases polarization resistance nearly fourfold, compared to bare steel. Notably, the coating maintains metallic-level conductivity (3.72 × 10<sup>6</sup> S/m), with only a 2.26 % reduction from the uncoated substrate. These results highlight the dual-functional performance of the graphene-Al<sub>2</sub>O<sub>3</sub> system and offer a promising route toward next-generation conductive anticorrosion coatings for energy and infrastructure applications.</div></div>","PeriodicalId":54332,"journal":{"name":"Journal of Materials Research and Technology-Jmr&t","volume":"39 ","pages":"Pages 576-584"},"PeriodicalIF":6.6,"publicationDate":"2025-09-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145108968","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Microstructural evolution and kinetics of the bainite transformation in a silicon-alloyed medium-carbon steel via two-step quenching and partitioning treatment 经两步淬火和分配处理的硅合金中碳钢贝氏体相变的组织演变和动力学

IF 6.6 2区材料科学

Journal of Materials Research and Technology-Jmr&t Pub Date : 2025-09-16 DOI: 10.1016/j.jmrt.2025.09.132

Shima Pashangeh , Seyyed Sadegh Ghasemi Banadkouki , Mahesh Chandra Somani , Nader Setoudeh

{"title":"Microstructural evolution and kinetics of the bainite transformation in a silicon-alloyed medium-carbon steel via two-step quenching and partitioning treatment","authors":"Shima Pashangeh , Seyyed Sadegh Ghasemi Banadkouki , Mahesh Chandra Somani , Nader Setoudeh","doi":"10.1016/j.jmrt.2025.09.132","DOIUrl":"10.1016/j.jmrt.2025.09.132","url":null,"abstract":"<div><div>This study investigates the isothermal bainite transformation kinetics in a silicon-alloyed, medium-carbon steel subjected to a two-step quenching and partitioning (Q&P) treatment, aimed at optimizing the stability and distribution of retained austenite (RA). The designed thermal pathway enabled decoupling of martensite formation and carbon partitioning, offering enhanced control over phase evolution. Dilatometric analysis and Avrami modeling were employed to quantify the transformation behavior during partitioning at 245 °C and 310 °C, following quenching to 140 °C and 180 °C. Microstructural analysis using laser scanning microscopy and EBSD revealed the coexistence of tempered martensite, bainite, RA, and secondary martensite. XRD quantification revealed that the maximum values of RA fractions were near 12–13 %, and the average carbon content rose from 0.66 to 1.35 wt% as partitioning progressed. A notable divergence between increasing RA carbon content and decreasing RA fraction at prolonged partitioning times highlights the competing effects of austenite stabilization, bainitic transformation, and possible carbide precipitation. Arrhenius-derived activation energies indicated lower transformation barriers in samples quenched to 140 °C (53.5–26.8 kJ/mol), confirming accelerated bainite formation due to higher pre-existing martensite content. These findings contribute to a better understanding of microstructural evolution during Q&P processing and may support further improvements in the thermal design of advanced high-strength steels.</div></div>","PeriodicalId":54332,"journal":{"name":"Journal of Materials Research and Technology-Jmr&t","volume":"39 ","pages":"Pages 474-492"},"PeriodicalIF":6.6,"publicationDate":"2025-09-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145108906","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Cost-effective alloying with vanadium for enhanced thermal stability of Al–5Cu alloys 经济高效的钒合金化提高了Al-5Cu合金的热稳定性

IF 6.6 2区材料科学

Journal of Materials Research and Technology-Jmr&t Pub Date : 2025-09-16 DOI: 10.1016/j.jmrt.2025.09.105

Jinxian Huang , Daisuke Ando , Yuji Sutou

{"title":"Cost-effective alloying with vanadium for enhanced thermal stability of Al–5Cu alloys","authors":"Jinxian Huang , Daisuke Ando , Yuji Sutou","doi":"10.1016/j.jmrt.2025.09.105","DOIUrl":"10.1016/j.jmrt.2025.09.105","url":null,"abstract":"<div><div>Al–Cu alloys have attracted attention for their high performance among commercial aluminum alloys, retaining strength up to 200 °C owing to precipitation hardening. This study examines the influence of vanadium additions on the precipitation and coarsening behavior of θ′ precipitates in Al–5Cu alloys. The addition of V increased the activation energy for θ′ precipitation from 58.39 kJ/mol to 86.20 kJ/mol, effectively retarding precipitation kinetics by reducing Cu diffusivity through strong vacancy binding. Furthermore, the coarsening rate of θ′ precipitates at 300 °C was reduced in the V-containing alloy. As a result, the yield strength and tensile strength of the V-containing alloy increased by 16–17 % in the peak-aged condition, and by 32–58 % after thermal exposure at 300 °C. Although V does not stabilize θ’ precipitates through interfacial segregation, it provides a cost-effective alternative for enhancing thermal stability through a diffusion-controlled mechanism. These results contribute to the development of Al–Cu alloys with improved performance and enhanced microstructural stability.</div></div>","PeriodicalId":54332,"journal":{"name":"Journal of Materials Research and Technology-Jmr&t","volume":"39 ","pages":"Pages 730-738"},"PeriodicalIF":6.6,"publicationDate":"2025-09-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145120923","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Mg–Al–Mn magnesium alloy processability and its extrusion simulation of complex profiles for automotive battery trays 汽车电池托盘复合型材Mg-Al-Mn镁合金可加工性及其挤压模拟

IF 6.6 2区材料科学

Journal of Materials Research and Technology-Jmr&t Pub Date : 2025-09-16 DOI: 10.1016/j.jmrt.2025.09.122

Tianyu Mao, Yu Tao, Yao Cheng, Xuan Luo, Xinde Huang, Yunchang Xin

{"title":"Mg–Al–Mn magnesium alloy processability and its extrusion simulation of complex profiles for automotive battery trays","authors":"Tianyu Mao, Yu Tao, Yao Cheng, Xuan Luo, Xinde Huang, Yunchang Xin","doi":"10.1016/j.jmrt.2025.09.122","DOIUrl":"10.1016/j.jmrt.2025.09.122","url":null,"abstract":"<div><div>Although magnesium alloy thin-walled profiles possess significant lightweight potential for new energy vehicle battery trays, their processing has not been reported previously. This study systematically investigates the workability of an Mg-7.5Al-0.5Mn-0.3Ce alloy (a novel composition specifically designed for lightweight battery tray applications) and its extrusion process. Hot compression tests are performed to characterize the rheological behavior, resulting in the development of a strain-compensated Arrhenius-type constitutive model incorporating Zener-Hollomon parameters. The model demonstrates excellent predictive capability, with a correlation coefficient (R) of 0.9938 and an average absolute relative error (AARE) of 3.73%. The combination of this Arrhenius model with processing maps identifies an optimal processing window (approximately 723 K at low strain rates with power dissipation efficiency η >0.3), providing theoretical guidance for hot deformation process optimization. The use of custom-designed planar manifold combination dies, integrated with HyperXtrude numerical simulation, achieves uniform material flow at the profile outlet (maximum velocity difference: 0.5 mm/s). Experimental validation shows a close agreement between simulation and experimental extrusion results. Microstructural characterization confirms complete grain fusion in the weld seam with no detectable surface coarse grains. Mechanical tests demonstrate superior properties in the weld zone (tensile strength: 321.9 MPa) compared to the base material (310.6 MPa). These findings validate the optimized manifold die extrusion parameters, enabling high-quality forming of thin-walled profiles with large width-to-thickness ratios. This work provides a technical foundation for magnesium alloy applications in new-energy vehicle battery trays.</div></div>","PeriodicalId":54332,"journal":{"name":"Journal of Materials Research and Technology-Jmr&t","volume":"39 ","pages":"Pages 513-527"},"PeriodicalIF":6.6,"publicationDate":"2025-09-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145108643","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Improved recrystallization resistance by ferrite and carbide in a ferritic/martensitic (F/M) steel 铁素体/马氏体（F/M）钢中铁素体和碳化物抗再结晶性能的提高

IF 6.6 2区材料科学

Journal of Materials Research and Technology-Jmr&t Pub Date : 2025-09-15 DOI: 10.1016/j.jmrt.2025.09.106

Jun Zhang , Xiaoxin Zhang , Hao Ren , Decang Zhang , Yingxue Chen , Feifei Zhang , Xinhao Zhang , Qingzhi Yan

{"title":"Improved recrystallization resistance by ferrite and carbide in a ferritic/martensitic (F/M) steel","authors":"Jun Zhang , Xiaoxin Zhang , Hao Ren , Decang Zhang , Yingxue Chen , Feifei Zhang , Xinhao Zhang , Qingzhi Yan","doi":"10.1016/j.jmrt.2025.09.106","DOIUrl":"10.1016/j.jmrt.2025.09.106","url":null,"abstract":"<div><div>To ensure long-term thermal stability of deformed materials, 9–12 %Cr ferritic/martensitic (F/M) steels require exceptional resistance to recrystallize. Here we proposed a dual-phase strategy on a 9Cr F/M steel with high-density carbides by adjusting Si and C content. The designed 9Cr–1Si-0.12C steel (1Si) exhibits a 102 °C increase in recrystallization temperature (from 655 °C to 757 °C under 50 % cold rolling deformation) compared to the conventional 9Cr-0.2Si-0.06C steel (0.2Si). This enhancement originates from synergistic effect of carbides and ferrite: (i) a high density of carbides impedes bulge nucleation in martensite; (ii) soft ferrite accommodates mass deformation through geometric necessary dislocations (GNDs) accumulation, reducing the stored energy of martensite; (iii) fence-like ferrites decorated with carbides sever as natural barriers to restrict the growth of martensite effectively, increasing the energy consumption of recrystallization. In addition, the recrystallization of ferrite is also limited by the formation of high-density thermal-stable GNDs and high-content low-energy rotated cube texture.</div></div>","PeriodicalId":54332,"journal":{"name":"Journal of Materials Research and Technology-Jmr&t","volume":"39 ","pages":"Pages 448-460"},"PeriodicalIF":6.6,"publicationDate":"2025-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145108953","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Sintering behavior and densification mechanisms of ultrafine molybdenum powders under varying compaction and sintering conditions 不同压实和烧结条件下超细钼粉的烧结行为及致密化机理

IF 6.6 2区材料科学

Journal of Materials Research and Technology-Jmr&t Pub Date : 2025-09-15 DOI: 10.1016/j.jmrt.2025.09.090

Qifei Zhang , Ziwen Zhu , Xiaolong Luo , Qingkui Li , Yongli Li , Xiaogang You , Zhongwei Zhao

{"title":"Sintering behavior and densification mechanisms of ultrafine molybdenum powders under varying compaction and sintering conditions","authors":"Qifei Zhang , Ziwen Zhu , Xiaolong Luo , Qingkui Li , Yongli Li , Xiaogang You , Zhongwei Zhao","doi":"10.1016/j.jmrt.2025.09.090","DOIUrl":"10.1016/j.jmrt.2025.09.090","url":null,"abstract":"<div><div>The sintering behavior of ultrafine molybdenum powders with a particle size of approximately 1 μm was systematically investigated. The impact of cold isostatic pressing (CIP) and sintering parameters on the densification of molybdenum was investigated. A range of CIP pressures from 50 MPa to 250 MPa was employed before the sintering process. It indicates that the densification is predominantly influenced by the CIP pressure and sintering temperature. Substantial dislocations are introduced after CIP. The dislocation density is significantly reduced in the early-stage of sintering, accompanied by the formation of substructures and sub-grains within the particles. The minimal orientation difference between the adjacent sub-grains provides a prerequisite for in-situ recrystallization. As the temperature increases, most substructures evolve into sub-grains due to the rapid diffusion and rearrangement of atoms. With prolonged holding time at 1400 °C, sub-grains within large primary grains coalesce through the degradation of sub-grain boundaries. Higher sintering temperatures further promote grain boundary migration, leading to continuous grain growth and improved densification. A relative density of 98.83 % is achieved after sintering at 1800 °C for 4 h, whereas the highest hardness of 183.60 HV<sub>1.0</sub> is obtained after sintering at 1600 °C for 8 h. The activation energy for sintering and grain boundary migration are 383.49 kJ/mol and 3.29 kJ/mol, respectively.</div></div>","PeriodicalId":54332,"journal":{"name":"Journal of Materials Research and Technology-Jmr&t","volume":"39 ","pages":"Pages 283-298"},"PeriodicalIF":6.6,"publicationDate":"2025-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145108637","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Solute adsorption energy criterion for discovering effective grain refiners in high-Si Al–Si alloys 在高硅铝硅合金中发现有效晶粒细化剂的溶质吸附能准则

IF 6.6 2区材料科学

Journal of Materials Research and Technology-Jmr&t Pub Date : 2025-09-15 DOI: 10.1016/j.jmrt.2025.09.123

Wenshuo Hao , Sida Ma , Yaowen Hu , Dayong Wu , Duyao Zhang , Tao Jing , Qingyan Xu , Hao Chen , Hongbiao Dong

{"title":"Solute adsorption energy criterion for discovering effective grain refiners in high-Si Al–Si alloys","authors":"Wenshuo Hao , Sida Ma , Yaowen Hu , Dayong Wu , Duyao Zhang , Tao Jing , Qingyan Xu , Hao Chen , Hongbiao Dong","doi":"10.1016/j.jmrt.2025.09.123","DOIUrl":"10.1016/j.jmrt.2025.09.123","url":null,"abstract":"<div><div>Grain refinement is crucial for achieving a uniform fine microstructure and superior mechanical properties in aluminum alloys. While the Al–5Ti–1B grain refiner is effective for low-Si Al–Si alloys, its refining performance deteriorates in high-Si alloys due to “Si poisoning”. In this study, <em>ab initio</em> calculations reveal that interfacial Si adsorption destabilizes the Al<sub>3</sub>Ti monolayer, thereby reducing its nucleation potency. Based on this mechanism, a solute adsorption energy criterion is proposed to identify alternative grain refiners with improved resistance to Si poisoning and effective refinement performance. By systematically screening transition metals in the 4th and 5th periods, V and Nb are identified as promising candidates. Their corresponding Al–V–B and Al–Nb–B refiners reduce the grain size of Al–10Si from 1033 μm to 264 μm and 217 μm, respectively. This work not only provides deeper insights into the atomic-scale nucleation mechanisms in high-Si Al alloys but also introduces a computationally guided framework for the rapid discovery of effective grain refiners with enhanced resistance to Si poisoning.</div></div>","PeriodicalId":54332,"journal":{"name":"Journal of Materials Research and Technology-Jmr&t","volume":"39 ","pages":"Pages 506-512"},"PeriodicalIF":6.6,"publicationDate":"2025-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145108954","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0