Scripta Materialia最新文献_第10页

A thermodynamic approach to modeling multicomponent FeTi-based alloys for hydrogen storage

IF 5.3 2区材料科学

Scripta Materialia Pub Date : 2025-01-16 DOI: 10.1016/j.scriptamat.2024.116516

Ebert Alvares , Andrew J.E. Rowberg , Kai Sellschopp , Brandon C. Wood , Thomas Klassen , Paul Jerabek , Claudio Pistidda

{"title":"A thermodynamic approach to modeling multicomponent FeTi-based alloys for hydrogen storage","authors":"Ebert Alvares , Andrew J.E. Rowberg , Kai Sellschopp , Brandon C. Wood , Thomas Klassen , Paul Jerabek , Claudio Pistidda","doi":"10.1016/j.scriptamat.2024.116516","DOIUrl":"10.1016/j.scriptamat.2024.116516","url":null,"abstract":"<div><div>Modeling the impact of alloying on the hydrogenation properties of intermetallic compounds is a vital yet challenging task for hydrogen storage materials design: not only do these processes occur under thermodynamic para-equilibrium conditions, but for bcc-derived compounds, the task is further complicated through varying composition-dependent ordering transitions. Here, we tackle these challenges by providing a multicomponent thermodynamic modeling framework for FeTi, a representative bcc-derived material class, which is one of the most relevant room-temperature interstitial metal hydrides. We aim specifically to describe para-equilibrium in FeTi-based multicomponent hydrides while ensuring compatibility with previously evaluated metallic systems. DFT point-defect calculations provide a physics-informed foundation to identify substitutional site preferences. Not only does our approach give detailed guidance for the selection of model parameters to evaluate phase equilibria for a broad range of FeTi-based multicomponent systems with high fidelity, but it also can be easily adopted to other interstitial hydrogen storage compounds.</div></div>","PeriodicalId":423,"journal":{"name":"Scripta Materialia","volume":"259 ","pages":"Article 116516"},"PeriodicalIF":5.3,"publicationDate":"2025-01-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143170199","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Origin of premature fracture and enhancement of superelasticity in laser additively manufactured Ni-rich NiTi metamaterials

IF 5.3 2区材料科学

Scripta Materialia Pub Date : 2025-01-16 DOI: 10.1016/j.scriptamat.2025.116558

Zhaorui Yan , Jia-Ning Zhu , Yi-Chieh Yang , Hans Brouwer , Ton Riemslag , Joerg R. Jinschek , Marcel Hermans , Jovana Jovanova , Vera Popovich

{"title":"Origin of premature fracture and enhancement of superelasticity in laser additively manufactured Ni-rich NiTi metamaterials","authors":"Zhaorui Yan , Jia-Ning Zhu , Yi-Chieh Yang , Hans Brouwer , Ton Riemslag , Joerg R. Jinschek , Marcel Hermans , Jovana Jovanova , Vera Popovich","doi":"10.1016/j.scriptamat.2025.116558","DOIUrl":"10.1016/j.scriptamat.2025.116558","url":null,"abstract":"<div><div>Superelastic metamaterials have attracted significant attention recently, but achieving such functionality remains challenging due to partial superelasticity and premature fracture in additively manufactured components. To address these issues, this study investigates the premature fracture in Ni-rich NiTi metamaterials fabricated by laser powder bed fusion. A comparative analysis of two structures (Gyroid network and Diamond shell) reveals that the structural stability of bending- and stretching-dominated structures is reversed compared to typical elastic-plastic response, due to the tension-compression asymmetry of base NiTi. The premature fracture and partial superelasticity of these as-fabricated samples are attributed to low deformation ability for accommodating tensile stress. Based on these findings, a heat treatment introducing Ni<sub>4</sub>Ti<sub>3</sub> precipitates was employed, successfully achieving macroscopic superelasticity in the NiTi metamaterials, with consistency between model prediction and experiments.</div></div>","PeriodicalId":423,"journal":{"name":"Scripta Materialia","volume":"259 ","pages":"Article 116558"},"PeriodicalIF":5.3,"publicationDate":"2025-01-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143170005","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Quantifying the local compositional fluctuation and Shannon entropy inherent in multi-principal element alloys

IF 5.3 2区材料科学

Scripta Materialia Pub Date : 2025-01-16 DOI: 10.1016/j.scriptamat.2025.116559

Miaoran Zhang , Bozhao Zhang , Jun Ding , Evan Ma

引用次数: 0

The diffusion dynamic of Ti in liquid cathodes during molten oxide electrolysis

IF 5.3 2区材料科学

Scripta Materialia Pub Date : 2025-01-16 DOI: 10.1016/j.scriptamat.2025.116548

Shijie Li , Yang Gao , Wei Wang , Donghua Tian , Zhenghao Pu , Handong Jiao , Shuqiang Jiao

引用次数: 0

Microstructure evolution and hardening behavior in FCC Ni under ion irradiation: Influence of dose rate

IF 5.3 2区材料科学

Scripta Materialia Pub Date : 2025-01-15 DOI: 10.1016/j.scriptamat.2025.116546

Liang Xia , Jia Huang , Yiheng Chen , Yuxin Liu , Ke Jin , Xujia Wang , Shuan Xia , Hongchang Wang , Ling Li , Jianming Xue , Yugang Wang , Chenxu Wang

{"title":"Microstructure evolution and hardening behavior in FCC Ni under ion irradiation: Influence of dose rate","authors":"Liang Xia , Jia Huang , Yiheng Chen , Yuxin Liu , Ke Jin , Xujia Wang , Shuan Xia , Hongchang Wang , Ling Li , Jianming Xue , Yugang Wang , Chenxu Wang","doi":"10.1016/j.scriptamat.2025.116546","DOIUrl":"10.1016/j.scriptamat.2025.116546","url":null,"abstract":"<div><div>The dose rate-dependent microstructure evolution and hardening of FCC-Ni was investigated. Irradiations were conducted using 6 MeV I<sup>3+</sup> ions at a temperature of 723 K, across four distinct dose rates. TEM analyses revealed that with increasing dose rate, the size of dislocation loops decreased while their density increased. In contrast, both the size and density of voids exhibited a declining trend. The defect dynamics were considered to elucidate the underlying mechanisms of these findings. Nano-indentation test was utilized to evaluate the depth-dependent hardness, revealing a pronounced irradiation hardening effect that diminished as the dose rate increased. A mechanistic model was developed, incorporating the hardening contributions of irradiation-induced voids and loops, along with the role of dislocation networks. The model provided an analysis of microstructure parameters and strengthening coefficients with respect to dose rate, identifying the dominant hardening mechanisms at various depths and highlighting their evolution with dose rate.</div></div>","PeriodicalId":423,"journal":{"name":"Scripta Materialia","volume":"259 ","pages":"Article 116546"},"PeriodicalIF":5.3,"publicationDate":"2025-01-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143169995","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

Understanding high coercivity in ThMn12-type Sm–Zr–Fe–Co–Ti permanent magnet powders through nanoscale analysis

IF 5.3 2区材料科学

Scripta Materialia Pub Date : 2025-01-15 DOI: 10.1016/j.scriptamat.2025.116537

Nikita Polin , Alexander M. Gabay , Chaoya Han , Christopher Chan , Se-Ho Kim , Chaoyang Ni , Oliver Gutfleisch , George C. Hadjipanayis , Baptiste Gault

引用次数: 0

Exploring the mechanical properties of zinc metal across various length scales and strain rates for battery applications

IF 5.3 2区材料科学

Scripta Materialia Pub Date : 2025-01-15 DOI: 10.1016/j.scriptamat.2025.116541

Jungho Shin, Matt Pharr

引用次数: 0

Superior high-temperature strength induced by solid solution strengthening in light-weight refractory high entropy alloy

IF 5.3 2区材料科学

Scripta Materialia Pub Date : 2025-01-15 DOI: 10.1016/j.scriptamat.2025.116562

Z.H. Cao , W.L. Zhao , M.J. Kai , Z.Y. Cheng , Y.J. Ma , X.T. Wang , J. Cheng , Y.Y. Hu , T.R. Xu , X.Y. Song , S. Wu

{"title":"Superior high-temperature strength induced by solid solution strengthening in light-weight refractory high entropy alloy","authors":"Z.H. Cao , W.L. Zhao , M.J. Kai , Z.Y. Cheng , Y.J. Ma , X.T. Wang , J. Cheng , Y.Y. Hu , T.R. Xu , X.Y. Song , S. Wu","doi":"10.1016/j.scriptamat.2025.116562","DOIUrl":"10.1016/j.scriptamat.2025.116562","url":null,"abstract":"<div><div>Refractory high entropy alloys (RHEAs) have a high melting point and strength, exhibiting great potential for high-temperature applications. In this work, a novel single-phase Ti<sub>60</sub>(AlVCr)<sub>28</sub>Mo<sub>12</sub> RHEA with a low density of 5.3 g/cm<sup>3</sup> is reported, exhibiting a high strength and plasticity at room and elevated temperatures. The single-phase RHEA has a high yield strength of 760 MPa with a significant strain hardening capability at 600 °C and remains 530 MPa as the temperature increases to 800 °C, which is twice as high as dual-phase Ti<sub>60</sub>(AlVCr)<sub>40</sub> RHEA. Mo element has effectively stabilized the high-entropy BCC solid solution phase, inhibiting the formation of ordered precipitates in the matrix phase. The severe lattice distortion increases the dislocation movement barrier and thereby promotes the dislocation multiplication during high-temperature plastic deformation, resulting in significant strain hardening. The strong solid solution strengthening originating from large modulus mismatch is mainly responsible for the enhanced high-temperature softening resistance.</div></div>","PeriodicalId":423,"journal":{"name":"Scripta Materialia","volume":"259 ","pages":"Article 116562"},"PeriodicalIF":5.3,"publicationDate":"2025-01-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143170003","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

Enabling strong and formable advanced high-strength steels through inherited homogeneous microstructure

IF 5.3 2区材料科学

Scripta Materialia Pub Date : 2025-01-15 DOI: 10.1016/j.scriptamat.2025.116560

Ning Xu , Lingyu Wang , Jun Hu , Yuxiang Wu , Xiaolu Wei , Weilin Xue , Zhisong Chai , Jinliang Wang , Yizhuang Li , Wei Xu

{"title":"Enabling strong and formable advanced high-strength steels through inherited homogeneous microstructure","authors":"Ning Xu , Lingyu Wang , Jun Hu , Yuxiang Wu , Xiaolu Wei , Weilin Xue , Zhisong Chai , Jinliang Wang , Yizhuang Li , Wei Xu","doi":"10.1016/j.scriptamat.2025.116560","DOIUrl":"10.1016/j.scriptamat.2025.116560","url":null,"abstract":"<div><div>Fabricating quenching and partitioning (Q&P) steels with less mechanical heterogeneity among phases is crucial for achieving balanced strength and formability. In the present study, we demonstrate a strategy for fine-tuning the microstructural inheritance effect to optimize the final microstructure. This approach involves a rapid cooling and tempering step after hot rolling to template an initial microstructure with uniformly distributed ferrite laths. The final microstructure contains a higher volume fraction of primary martensite and stable retained austenite, leading to enhancement in both strength and ductility. The templating method also eliminates bulky ferrite and significantly reduces strain localization, as demonstrated by microscopic digital image correlation (μ-DIC). The templated final microstructure not only achieves higher yield strength compared to existing Q&P980 steels, but also exhibits simultaneous improvement in elongation and stretch-flangeability. Our findings suggest that it is essential to consider and leverage the inheritance effect to optimize products with long processing chains.</div></div>","PeriodicalId":423,"journal":{"name":"Scripta Materialia","volume":"259 ","pages":"Article 116560"},"PeriodicalIF":5.3,"publicationDate":"2025-01-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143170001","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

The evolution of lamellar phase and its effect on high temperature magnetic properties in Lu-doped Sm2Co17-type magnets

IF 5.3 2区材料科学

Scripta Materialia Pub Date : 2025-01-14 DOI: 10.1016/j.scriptamat.2025.116547

Yu Liu , Zhuang Liu , Chaoqun Zhu , Haichen Wu , Yang Yang , Yaowen Li , Dongliang Tan , Rui Xia , Shiheng Zhang , Lvyuan Hao , Renjie Chen , Aru Yan

{"title":"The evolution of lamellar phase and its effect on high temperature magnetic properties in Lu-doped Sm2Co17-type magnets","authors":"Yu Liu , Zhuang Liu , Chaoqun Zhu , Haichen Wu , Yang Yang , Yaowen Li , Dongliang Tan , Rui Xia , Shiheng Zhang , Lvyuan Hao , Renjie Chen , Aru Yan","doi":"10.1016/j.scriptamat.2025.116547","DOIUrl":"10.1016/j.scriptamat.2025.116547","url":null,"abstract":"<div><div>As a diffusion channel for Cu, the lamellar phase significantly influences the magnetic properties of Sm<sub>2</sub>Co<sub>17</sub>-type magnets, but its formation process remains unclear. In this paper, the impact of Lu substitution on Sm<sub>2</sub>Co<sub>17</sub>-type magnets was investigated. The inclusion of Lu was observed to significantly facilitate an increase in the 2:17R' phase within the solid solution. The increased 2:17R' phase leads to a rapid precipitation of the lamellar phase during aging treatment, as the ABBA-type atomic layer stacking structure promotes the formation of a 1:3R phase. Furthermore, the premature formation of the 1:3R phase inhibits subsequent continuous precipitation of the cell boundary phase, leading to a decrease in coercivity. However, the Cu content in cell boundary phase increases, optimizing the coercivity temperature coefficient from -0.17 %/ °C to -0.15 %/ °C between RT and 823 K. Our elucidation of the lamellar phase formation provides novel insights for optimizing the high-temperature magnetic performance of Sm<sub>2</sub>Co<sub>17</sub>-type magnets.</div></div>","PeriodicalId":423,"journal":{"name":"Scripta Materialia","volume":"259 ","pages":"Article 116547"},"PeriodicalIF":5.3,"publicationDate":"2025-01-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143169997","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