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IF 2.3 4区材料科学

JOM Pub Date : 2026-07-29 DOI: 10.1007/s11837-026-08628-4

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Opening Ideas 开放的想法

IF 2.3 4区材料科学

JOM Pub Date : 2026-07-29 DOI: 10.1007/s11837-026-08626-6

Trudi Dunlap

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Recalibrating Our Voice: The Launch of the TMS Grassroots Advocacy Pilot Program 重新校准我们的声音：TMS基层倡导试点项目的启动

IF 2.3 4区材料科学

JOM Pub Date : 2026-07-29 DOI: 10.1007/s11837-026-08629-3

Richard Otis

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2025 Performance Metrics Announced for TMS Journals 2025年TMS期刊绩效指标公布

IF 2.3 4区材料科学

JOM Pub Date : 2026-07-29 DOI: 10.1007/s11837-026-08631-9

Matt Baker

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The Lead-Zinc Processing Community to Meet in Japan 铅锌加工界将在日本举行会议

IF 2.3 4区材料科学

JOM Pub Date : 2026-07-29 DOI: 10.1007/s11837-026-08634-6

Megan Enright

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JOM Technical Topics JOM技术主题

IF 2.3 4区材料科学

JOM Pub Date : 2026-07-29 DOI: 10.1007/s11837-026-08627-5

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Inclusions Control of High-Mn Austenitic Cryogenic Steel Weld Metal Under Lanthanum Action 镧作用下高锰奥氏体低温钢焊缝金属夹杂控制

IF 2.3 4区材料科学

JOM Pub Date : 2026-07-27 DOI: 10.1007/s11837-026-08605-x

Hongyan Zhang, Jinshuai Zhang, Guangqiang Li, Xiangliang Wan, Sujuan Yuan, Honghong Wang, Mingfeng Hu, Zhinan Yang

{"title":"Inclusions Control of High-Mn Austenitic Cryogenic Steel Weld Metal Under Lanthanum Action","authors":"Hongyan Zhang, Jinshuai Zhang, Guangqiang Li, Xiangliang Wan, Sujuan Yuan, Honghong Wang, Mingfeng Hu, Zhinan Yang","doi":"10.1007/s11837-026-08605-x","DOIUrl":"10.1007/s11837-026-08605-x","url":null,"abstract":"<div>Lanthanum (La) was transferred into high-Mn austenitic cryogenic steel weld metal through submerged arc welding under a heat input of 15.74 kJ cm−1, utilizing an innovative method that involves the addition of La2O3 and silicon–calcium reducing agents to the flux. The evolution and formation mechanisms of types, number density, and size of inclusions in weld metals with La contents ranging from 0 wt.% to 0.096 wt.% were investigated using scanning electron microscopy, focused ion beam scanning electron microscopy, transmission electron microscopy, and thermodynamic modeling. The results indicated that the addition of La can modify the irregular Al2O3 into spherical La-containing inclusions (LaAlO3, La2O3 and La2O2S). As the La content increased from 0 wt.% to 0.096 wt.%, the inclusions underwent a stepwise evolution following the sequence Al2O3 → Al11O18La → LaAlO3 → La2O3 → La2O2S, which accurately corresponds to the phase stability sequence predicted by thermodynamic calculations for the La-Al-O-S system. Simultaneously, the number density of the inclusions increased monotonically from 4745/mm2 to 5893/mm2, whereas the average size initially decreased from 0.56 μm to 0.42 μm, and then rising again to 0.49 μm. Specifically, the La-Al-O-S inclusions were extracted using an in-situ sample preparation technique, their internal structure and precise chemical composition were determined, and a comprehensive formation model of the La-Al-O-S system was established.</div>","PeriodicalId":605,"journal":{"name":"JOM","volume":"78 9","pages":"8768 - 8780"},"PeriodicalIF":2.3,"publicationDate":"2026-07-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148782851","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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 Hypoeutectic Mg‐1.0Si Alloy: Blend-Press-Sinter Powder Processing, Microstructural Evolution, and Mechanical Performance 一种亚共晶Mg‐1.0Si合金：混合-压制-烧结粉末加工、显微组织演变和力学性能

IF 2.3 4区材料科学

JOM Pub Date : 2026-07-24 DOI: 10.1007/s11837-026-08588-9

S. Fida Hassan, M. T. Hassan, S. Nouari, M. M. A. Baig, F. Patel

{"title":"A Hypoeutectic Mg‐1.0Si Alloy: Blend-Press-Sinter Powder Processing, Microstructural Evolution, and Mechanical Performance","authors":"S. Fida Hassan, M. T. Hassan, S. Nouari, M. M. A. Baig, F. Patel","doi":"10.1007/s11837-026-08588-9","DOIUrl":"10.1007/s11837-026-08588-9","url":null,"abstract":"<div>A hypoeutectic Mg‐1.0Si alloy was fabricated using a blend-press-sinter powder metallurgy route followed by high-ratio hot extrusion (19.1:1 at 300°C). Near-theoretical densities (< 0.6% porosity) were achieved, demonstrating effective deformation-assisted densification of Mg‐Si powder compacts. Phase analysis confirmed an α-Mg matrix containing finely dispersed ({text{Mg}}_{{2}} {text{Si}}) particles formed by localized solid-state interfacial reactions. Limited Si solubility in Mg was inferred from minor lattice parameter contraction but was thermodynamically constrained. Extrusion-induced dynamic recrystallization resulted in significant grain refinement compared with powder-processed pure Mg. Semi-quantitative strengthening analysis indicates that the 26-MPa increase in tensile yield strength arises primarily from grain-boundary strengthening and Orowan dispersion strengthening, while solid-solution strengthening plays a minor role. Under tension, strength enhancement is accompanied by reduced ductility because of particle-assisted void nucleation under positive stress triaxiality. In contrast, compressive ductility is preserved and energy absorption increases, reflecting suppressed void growth and twinning-mediated deformation. The results demonstrate that controlled solid-state synthesis of fine ({text{Mg}}_{{2}} {text{Si}}) combined with high-strain extrusion provides an effective pathway for strengthening hypoeutectic Mg‐1.0Si alloys while retaining compressive deformability.</div>","PeriodicalId":605,"journal":{"name":"JOM","volume":"78 9","pages":"8755 - 8767"},"PeriodicalIF":2.3,"publicationDate":"2026-07-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148783196","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

Atomic-Scale Modeling of Mechanical Properties and Corrosion Behavior in Mg-Pr Alloys Using a Deep Potential Approach 基于深电位方法的Mg-Pr合金力学性能和腐蚀行为的原子尺度建模

IF 2.3 4区材料科学

JOM Pub Date : 2026-07-23 DOI: 10.1007/s11837-026-08578-x

Ruotong Gao, Dayong Cui, Zhijie He, Xiangjie Fu, Jinlong Chen, Xiaohua Yu, Hongying Hou, Ju Rong

{"title":"Atomic-Scale Modeling of Mechanical Properties and Corrosion Behavior in Mg-Pr Alloys Using a Deep Potential Approach","authors":"Ruotong Gao, Dayong Cui, Zhijie He, Xiangjie Fu, Jinlong Chen, Xiaohua Yu, Hongying Hou, Ju Rong","doi":"10.1007/s11837-026-08578-x","DOIUrl":"10.1007/s11837-026-08578-x","url":null,"abstract":"<div>The performance of orthopedic implants depends on biocompatibility, mechanical compatibility, and long-term reliability. Magnesium–praseodymium (Mg-Pr) alloys, with biodegradability and bone-like mechanical response, are promising candidates. Their low alloying content and pronounced local chemical complexity, however, challenge conventional empirical potentials, limiting atomistic simulation accuracy. Here, a deep potential (DP) model within an “AI for Science” framework is developed to investigate crystallography, mechanics, energetics, and corrosion kinetics of Mg-Pr alloys. The DP model outperforms empirical and mainstream machine-learning potentials, achieving root mean square errors of 3.61 × 10−3 eV/atom for energies and 1.84 × 10−3 eV/Å for forces. The model reproduces density functional theory (DFT)-level accuracy in lattice constants, phonon spectra, and elastic moduli, and is able to predict vacancy and surface energies with a relative error of less than 1%. Coupling the DP model with anodic dissolution theory, corrosion polarization is accurately reproduced, consistent with DFT and experiments. This work provides an efficient atomic-scale framework for understanding structure–property–corrosion relationships in Mg-Pr alloys and a reliable tool for designing biodegradable magnesium implants.</div>","PeriodicalId":605,"journal":{"name":"JOM","volume":"78 9","pages":"8694 - 8706"},"PeriodicalIF":2.3,"publicationDate":"2026-07-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148782809","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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 Extrusion Ratio on Dynamic Recrystallization, Texture Evolution, and Mechanical Properties of an Electric-Pulse-Refined 7050 Aluminum Alloy 挤压比对电脉冲精炼7050铝合金动态再结晶、织构演化和力学性能的影响

IF 2.3 4区材料科学

JOM Pub Date : 2026-07-23 DOI: 10.1007/s11837-026-08594-x

Dongyu Ma, Shunde Jiang, Kaijiao Kang, Xiaofang Yuan, Jinsong Zhao, Zehua Yan

{"title":"Effect of Extrusion Ratio on Dynamic Recrystallization, Texture Evolution, and Mechanical Properties of an Electric-Pulse-Refined 7050 Aluminum Alloy","authors":"Dongyu Ma, Shunde Jiang, Kaijiao Kang, Xiaofang Yuan, Jinsong Zhao, Zehua Yan","doi":"10.1007/s11837-026-08594-x","DOIUrl":"10.1007/s11837-026-08594-x","url":null,"abstract":"<div>This study investigates the effect of extrusion ratio on the dynamic recrystallization, texture evolution, and mechanical properties of an electric-pulse-refined (EPR) 7050 aluminum alloy during hot extrusion. After homogenization, the EPR-refined alloy exhibited a relatively uniform initial microstructure with reduced non-equilibrium eutectic constituents, providing a suitable basis for studying extrusion-ratio-dependent evolution. However, because no conventionally cast 7050 alloy was included, the independent contribution of EPR cannot be quantitatively separated. With increasing extrusion ratio, the alloy shows progressive grain refinement, enhanced dynamic recrystallization, redistribution of second-phase particles, and strengthened extrusion fiber texture. The average grain size decreases from 43.91 μm at an extrusion ratio of 5.8 μm to 17.78 μm at 20.3, indicating that higher extrusion ratios promote refinement rather than coarsening. This evolution is mainly attributed to increased accumulated strain and stored deformation energy, which drive the transition from dynamic recovery to dynamic recrystallization. The resulting higher recrystallized fraction and increased high-angle grain boundaries improve the microstructural uniformity and mechanical properties.</div>","PeriodicalId":605,"journal":{"name":"JOM","volume":"78 9","pages":"8781 - 8803"},"PeriodicalIF":2.3,"publicationDate":"2026-07-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148782808","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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