Materialia最新文献_第4页

A framework for the phenomenological modeling of aluminum alloys processed by laser powder-bed fusion 激光粉末床熔合成形铝合金的现象学建模框架

IF 3.1

Materialia Pub Date : 2026-08-01 Epub Date: 2026-07-21 DOI: 10.1016/j.mtla.2026.102850

Michael Mauersberger, Ashutosh Maurya, Johannes Markmiller, Subramaniam Rajan

{"title":"A framework for the phenomenological modeling of aluminum alloys processed by laser powder-bed fusion","authors":"Michael Mauersberger, Ashutosh Maurya, Johannes Markmiller, Subramaniam Rajan","doi":"10.1016/j.mtla.2026.102850","DOIUrl":"10.1016/j.mtla.2026.102850","url":null,"abstract":"<div><div>Additive manufacturing (AM) technologies, particularly laser powder-bed fusion (LPBF), are critical in producing lightweight metal components for industries like aerospace and automotive. Development of techniques that make the qualification process of AM parts more efficient and accurate are highly desirable, e.g., witness specimens incorporating complex geometries permit quality assessments early in the process. To predict the behavior of AM parts accurately requires high-fidelity material characterization laboratory tests and the use of these test data to build accurate material models. This paper shows how a framework for the phenomenological modeling of AM materials, i.e., modeling directly based on measured data from mechanical experiments without considering micromechanical effects, has been implemented in LS-DYNA’s MAT_213 material model for use with AM structural components. Present investigations focus on AM aluminum alloys Al2139 and AlSi10Mg featuring characteristics of the mechanical behavior that are challenging for simulation. To predict those characteristics, anisotropic elastoplastic properties were obtained through macro-mechanical experimental tests. Test results were fed into MAT_213 material model to predict the mechanical behavior of the material by finite element (FE) simulations. Two validation examples show how detailed tabulated input in MAT_213 can be used – results show low prediction errors for the overall specimen behavior with errors as low as 0.6% for Al2139 and 0.9% for AlSi10Mg, while stiffness values were predicted with errors less than 10%. The framework can be easily extended to create simulation models for more sophisticated geometries and other AM manufacturing techniques where there is evidence of orthotropic viscoelastic-plastic material behavior.</div></div>","PeriodicalId":47623,"journal":{"name":"Materialia","volume":"48 ","pages":"Article 102850"},"PeriodicalIF":3.1,"publicationDate":"2026-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148641188","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Fabricating TiB2/Al-Si composites by wire arc additive manufacturing: A flux-cored wire approach 电弧增材制造制备TiB2/Al-Si复合材料：一种药芯焊丝方法

IF 3.1

Materialia Pub Date : 2026-08-01 Epub Date: 2026-07-15 DOI: 10.1016/j.mtla.2026.102838

Hao Lv, Chenggan Zhi, Jianxun Fu, Xiangping Wang, Runsheng Li, Cheng Deng, Xingwang Bai

{"title":"Fabricating TiB2/Al-Si composites by wire arc additive manufacturing: A flux-cored wire approach","authors":"Hao Lv, Chenggan Zhi, Jianxun Fu, Xiangping Wang, Runsheng Li, Cheng Deng, Xingwang Bai","doi":"10.1016/j.mtla.2026.102838","DOIUrl":"10.1016/j.mtla.2026.102838","url":null,"abstract":"<div><div>TiB<sub>2</sub> was introduced through a self-developed Al-Si alloys flux-cored wire, and TiB<sub>2</sub> reinforced Al-Si composites were successfully fabricated via wire arc additive manufacturing (WAAM). Subsequently, the comprehensive influence of TiB<sub>2</sub> particles on the formation mechanism of pores, the evolution of grain structure, and mechanical properties was studied. The results demonstrated that pores originated from hydrogen in the molten pool and the air carried by the flux-cored wire, which migrated and aggregated in the molten pool and mainly concentrated near the fusion boundary. The incorporated TiB<sub>2</sub> particles significantly modified solidification behavior, migrating to grain boundaries under the combined effects of force, where they simultaneously pinned boundaries and promoted heterogeneous nucleation. This dual effect refined grain structure and promoted equiaxed crystals throughout deposited layers. Compared with the Al-Si alloys sample, the TiB2/Al-Si composites sample strength increased to 182.44±2.15 MPa and 163.70±5.27 MPa in the horizontal and vertical directions, respectively. However, the elongation decreased to 10.21±0.59% and 4.89±0.68% in the horizontal and vertical directions, mainly due to the excessive pores. This study provides a viable WAAM strategy for fabricating Al matrix composites with controllable microstructure-property relationships.</div></div>","PeriodicalId":47623,"journal":{"name":"Materialia","volume":"48 ","pages":"Article 102838"},"PeriodicalIF":3.1,"publicationDate":"2026-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148641198","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Retraction notice to “Physics-Informed and Interpretable Machine Learning for Elastic Constants of RHEAs” [Materialia 45 (2026) 102682] 关于“RHEAs弹性常数的物理信息和可解释机器学习”的撤回通知[材料45 (2026)102682]

IF 3.1

Materialia Pub Date : 2026-08-01 Epub Date: 2026-08-02 DOI: 10.1016/j.mtla.2026.102857

Ravindranadh Bobbili

引用次数: 0

A size dependent crossover in common glass: Inverse Griffith behaviour enables architected strength 普通玻璃的尺寸依赖交叉：逆格里菲斯行为使建筑强度

IF 3.1

Materialia Pub Date : 2026-08-01 Epub Date: 2026-07-25 DOI: 10.1016/j.mtla.2026.102852

Mackinley Shaw, Lucas Rosson, Nick Birbilis

引用次数: 0

Hydrophobic flame-retardant polyurethane coating: With fluorinated Graphene/Fe2O3/Microencapsulated APP 疏水阻燃聚氨酯涂料：含氟石墨烯/Fe2O3/微封装APP

IF 2.9

Materialia Pub Date : 2026-06-01 Epub Date: 2026-05-20 DOI: 10.1016/j.mtla.2026.102767

Jiaqing Zhang , Lingxin He , Yi Guo , Tao Sun , Rui Liu , Yubiao Huang , Fengju Shang , Tiantian Tan , Xia Zhou

{"title":"Hydrophobic flame-retardant polyurethane coating: With fluorinated Graphene/Fe2O3/Microencapsulated APP","authors":"Jiaqing Zhang , Lingxin He , Yi Guo , Tao Sun , Rui Liu , Yubiao Huang , Fengju Shang , Tiantian Tan , Xia Zhou","doi":"10.1016/j.mtla.2026.102767","DOIUrl":"10.1016/j.mtla.2026.102767","url":null,"abstract":"<div><div>This study presents a polyurethane (PU) -based composite coating, denoted PU-FG@Fe<sub>2</sub>O<sub>3</sub>/MAPP, engineered with a hybrid filler system to achieve synergistic flame-retardant and corrosion-resistant properties. The optimized composite formulation—comprising 3 wt% fluorinated graphene (FG), 1.5 wt% γ-Fe<sub>2</sub>O<sub>3</sub>, and 10 wt% MAPP—exhibited a water contact angle of 111.1° and a 35.8% reduction in peak heat release rate (PHRR) relative to PU, the reported results are the average of three measurements. After 7 days of humid-thermal (55 °C/85% RH) and salt spray (3.5% sodium chloride) aging, although flame retardancy and hydrophobicity declined across all coatings, the PU-FG@Fe<sub>2</sub>O<sub>3</sub>/MAPP demonstrated significantly enhanced durability. Although aging led to degradation of both flame-retardant and hydrophobic performance in all coatings, the PU-FG@Fe<sub>2</sub>O<sub>3</sub>/MAPP system demonstrated significantly enhanced durability, retaining functional properties far more effectively than unmodified PU under prolonged humid-thermal and salt spray exposure. These results underscore the potential of this multifunctional coating for applications demanding robust and durable fire safety and corrosion resistance.</div></div>","PeriodicalId":47623,"journal":{"name":"Materialia","volume":"47 ","pages":"Article 102767"},"PeriodicalIF":2.9,"publicationDate":"2026-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148186047","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Editors for Materialia 材料编辑

IF 2.9

Materialia Pub Date : 2026-06-01 Epub Date: 2026-06-04 DOI: 10.1016/S2589-1529(26)00126-2

引用次数: 0

Strength-plasticity synergistic mechanism of Fe-30Mn-8.6Al-1C low-density steel via HDI stress regulation induced by hardness difference Fe-30Mn-8.6Al-1C低密度钢硬度差诱导HDI应力调控的强度-塑性协同机制

IF 2.9

Materialia Pub Date : 2026-05-01 Epub Date: 2026-04-24 DOI: 10.1016/j.mtla.2026.102752

Lang Bai , Lifeng Hou , Duoyao Liang , Long Yang , Haiwei Wu , Yinghui Wei

{"title":"Strength-plasticity synergistic mechanism of Fe-30Mn-8.6Al-1C low-density steel via HDI stress regulation induced by hardness difference","authors":"Lang Bai , Lifeng Hou , Duoyao Liang , Long Yang , Haiwei Wu , Yinghui Wei","doi":"10.1016/j.mtla.2026.102752","DOIUrl":"10.1016/j.mtla.2026.102752","url":null,"abstract":"<div><div>Heterogeneous deformation-induced (HDI) hardening achieves strength-ductility synergy via HDI stress, yet its key governing parameter remains unclear. Here, we produce two heterogeneous structures – partially recrystallized heterostructures (PRHs) and mixed-grain heterostructures (MGHs) – in a cold-rolled Fe–30Mn–8.6Al–1C steel by annealing. Our results reveal that the hardness difference (ΔHV) between soft and hard zones is the key parameter for tailoring the HDI stress. Large ΔHV (51 HV) in PRHs effectively hinders dislocation motion and promotes interfacial pile-ups of geometrically necessary dislocations (GNDs), generating a high HDI stress of 498.9 MPa and thus achieving a yield strength of 970 MPa and a total elongation of 32%. Conversely, minor ΔHV (14 HV) in MGHs permits concurrent dislocation transmission during pile-up, reducing GNDs storage efficiency and lowering HDI stress to 378.8 MPa. These differentiated dislocation-interface interactions are directly verified by TEM, finding offers critical insights for the design of high strength-ductility heterostructured materials.</div></div>","PeriodicalId":47623,"journal":{"name":"Materialia","volume":"46 ","pages":"Article 102752"},"PeriodicalIF":2.9,"publicationDate":"2026-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147802303","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Synergistic effect of A-site Nd deficiency and B-site Mo doping in NdBaCo2O5+δ for enhancing electrochemical performance of solid oxide electrolysis cells NdBaCo2O5+δ中a位Nd缺乏和b位Mo掺杂对提高固体氧化物电解电池电化学性能的协同效应

IF 2.9

Materialia Pub Date : 2026-05-01 Epub Date: 2026-03-29 DOI: 10.1016/j.mtla.2026.102734

Xujie Liu , Changling Quan , Qiyue Wang , Yan Shao , Baocheng Shi , Ting Yan , Binxia Yuan , Zaiguo Fu

{"title":"Synergistic effect of A-site Nd deficiency and B-site Mo doping in NdBaCo2O5+δ for enhancing electrochemical performance of solid oxide electrolysis cells","authors":"Xujie Liu , Changling Quan , Qiyue Wang , Yan Shao , Baocheng Shi , Ting Yan , Binxia Yuan , Zaiguo Fu","doi":"10.1016/j.mtla.2026.102734","DOIUrl":"10.1016/j.mtla.2026.102734","url":null,"abstract":"<div><div>The delamination caused by thermal expansion mismatch between the anode and electrolyte in solid oxide electrolysis cells (SOECs) significantly restricts overall performance. The double perovskite materials Nd<sub>0.98</sub>BaCo<sub>2-y</sub>Mo<sub>y</sub>O<sub>5+δ</sub> (Nd<sub>0.98</sub>BCMo<sub>y</sub>, <em>y</em> = 0.03–0.07) were synthesized as oxygen electrodes of SOECs. Synergistic modification of A-site Nd deficiency and B-site Mo doping was adopted to improve the thermal expansion coefficient (TEC) and electrical conductivity of the NdBaCo<sub>2</sub>O<sub>5+δ</sub> (NBC). Specifically, Nd<sub>0.98</sub>BaCo<sub>1.93</sub>Mo<sub>0.07</sub>O<sub>5+δ</sub> exhibited a TEC of 13.94 × 10<sup>–6</sup> K<sup>-1</sup> and electrical conductivity of 235 S·cm<sup>-1</sup> at 800 °C, which were markedly superior to NBC. Thermogravimetric analysis further confirmed that the modified samples exhibited excellent thermal stability. In terms of electrochemical performance, the symmetric cell with Nd<sub>0.98</sub>BCMo<sub>0.03</sub> exhibited a polarization resistance of 0.027 Ω·cm<sup>2</sup> at 800 °C. A single cell utilizing this material as the oxygen electrode delivered a current density of 875.48 mA·cm<sup>-2</sup> at 800 °C under 1.5 V, corresponding to a theoretical hydrogen production rate of 365.95 ml·cm<sup>-2</sup>·h<sup>-1</sup>. These attractive properties demonstrate that the synergistic modification through A-site deficiency and B-site doping can effectively enhance NBC, offering a new strategy for developing oxygen electrode materials for solid oxide electrolysis cells.</div></div>","PeriodicalId":47623,"journal":{"name":"Materialia","volume":"46 ","pages":"Article 102734"},"PeriodicalIF":2.9,"publicationDate":"2026-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147802304","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Investigation of metallurgical mechanism governing the disorder/order transformation in high-silicon steels manufactured by L-PBF L-PBF法制备高硅钢无序/有序转变的冶金机理研究

IF 2.9

Materialia Pub Date : 2026-05-01 Epub Date: 2026-04-28 DOI: 10.1016/j.mtla.2026.102755

Maria Rita Ridolfi , Giulia Stornelli , Bryan Ramiro Rodriguez-Vargas , Paolo Vescovo , Riccardo Porta , Andrea Di Schino

{"title":"Investigation of metallurgical mechanism governing the disorder/order transformation in high-silicon steels manufactured by L-PBF","authors":"Maria Rita Ridolfi , Giulia Stornelli , Bryan Ramiro Rodriguez-Vargas , Paolo Vescovo , Riccardo Porta , Andrea Di Schino","doi":"10.1016/j.mtla.2026.102755","DOIUrl":"10.1016/j.mtla.2026.102755","url":null,"abstract":"<div><div>Laser-Powder-Bed-Fusion is a promising technology for manufacturing ferromagnetic components in High-Silicon steels to overcome the problem of intrinsic brittleness. To date, the mechanisms governing the formation of the ordered-brittle B2 and D0<sub>3</sub> phases, from the primary disordered-ductile A2 phase, are still unclear for processes involving rapid solidification. In this framework, a deep understanding of steel microstructural evolution is needed to identify the most suitable additive techniques and to define the best manufacturing parameters. The purpose of this work is to understand the mechanisms involved in the L-PBF fabrication of Fe–6.5 wt.%Si steel components, enabling a comparison with melt-spinning and Electron-Beam-Powder-Bed-Fusion. The work is developed around two hypotheses: (i) the disorder/order transformation is driven by thermal cycling in the already solidified layers due to repeated laser passes, (ii) the formation of ordered phases occurs during the solidification stage. The study is based on mathematical modelling coupled to experimental approach. Differential-Scanning-Calorimetry is applied to derive the kinetics of formation of ordered phases. Finite-Element-Method is adopted to evaluate the temperature evolution during the L-PBF process, and directional dendrite growth and Scheil’s model to calculate, respectively, the solidification map and micro-segregation. The analysis shows that the intrinsic brittleness of the Fe–6.5 wt.%Si component is promoted by ordered phases presence due to Si and C micro-segregation under conditions of rapid solidification and high undercooling at the dendritic front. On the other hand, high cooling rates do not allow the component to remain within the critical temperature long enough to form ordered phases during printing process.</div></div>","PeriodicalId":47623,"journal":{"name":"Materialia","volume":"46 ","pages":"Article 102755"},"PeriodicalIF":2.9,"publicationDate":"2026-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147858760","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Synergistic reinforcement of 38MnVS6 steel via soft–hard gradient laser cladding: Microstructural optimization and tribological behavior 软硬梯度激光熔覆38MnVS6钢的协同强化：组织优化和摩擦学行为

IF 2.9

Materialia Pub Date : 2026-05-01 Epub Date: 2026-04-28 DOI: 10.1016/j.mtla.2026.102760

Guohong Ji , Xinxue Zhao , Li Chen , Lijun Deng , Jiangpeng Cao , Jiliang Zhang , Jian Zhang , Changgen Li

{"title":"Synergistic reinforcement of 38MnVS6 steel via soft–hard gradient laser cladding: Microstructural optimization and tribological behavior","authors":"Guohong Ji , Xinxue Zhao , Li Chen , Lijun Deng , Jiangpeng Cao , Jiliang Zhang , Jian Zhang , Changgen Li","doi":"10.1016/j.mtla.2026.102760","DOIUrl":"10.1016/j.mtla.2026.102760","url":null,"abstract":"<div><div>Severe adhesive and fatigue wear of steel piston top ring grooves under high-temperature, high-pressure, and boundary-lubricated conditions significantly compromise engine efficiency and durability. To address this, a novel Fe-based functionally graded coating (FGC) featuring a soft–hard architecture was fabricated on 38MnVS6 steel via laser cladding. This design aims to synergize high surface load-bearing capacity with superior interfacial toughness. Detailed microstructural characterization reveals a gradient transition from a Cr/C-rich hard layer, reinforced by M<sub>7</sub>C<sub>3</sub> carbides and submicron grains (0.87-0.98 μm), to a ductile Fe-based solid-solution soft layer. The hard layer attains an average hardness of 616HV—approximately 2.3 times that of the substrate—effectively resisting plastic deformation. Under rigorous boundary lubrication tests at 230°C, the FGC demonstrates superior tribological stability, reducing the wear volume by more than one order of magnitude compared to the substrate. The dominant wear mechanism notably shifts from severe adhesion and delamination to mild abrasive and limited oxidative wear. These findings elucidate the crucial role of the gradient microstructure in suppressing high-temperature wear, providing an effective route for the surface strengthening and remanufacturing of critical engine components.</div></div>","PeriodicalId":47623,"journal":{"name":"Materialia","volume":"46 ","pages":"Article 102760"},"PeriodicalIF":2.9,"publicationDate":"2026-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147802302","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0