Scripta Materialia最新文献_第6页

Achieving the superior wetting behavior in ZrO2/Fe system controlled by the mechanism of dynamic elements diffusion and interfacial phase transaction

IF 5.3 2区材料科学

Scripta Materialia Pub Date : 2025-01-09 DOI: 10.1016/j.scriptamat.2024.116536

Zilong Zhao, Yefei Li, Yanmei Yang, Qiaoling Zheng, Yimin Gao

{"title":"Achieving the superior wetting behavior in ZrO2/Fe system controlled by the mechanism of dynamic elements diffusion and interfacial phase transaction","authors":"Zilong Zhao, Yefei Li, Yanmei Yang, Qiaoling Zheng, Yimin Gao","doi":"10.1016/j.scriptamat.2024.116536","DOIUrl":"10.1016/j.scriptamat.2024.116536","url":null,"abstract":"<div><div>In order to enhance the interfacial bonding behavior of ZrO<sub>2</sub>/Fe system, a typical Ti layer was coated surrounding the ZrO<sub>2</sub> plate, the wetting angle of ZrO<sub>2</sub>@Ti/Fe reduced dramatically to 9° Combined with the FIB specimen and TEM analysis, dynamical elements diffusion can be observed obviously. The outmost part of ZrO<sub>2</sub> ceramic converted into ZrO<sub>2-</sub><em><sub>x</sub></em>, the excessive O and Ti elements, diffused from the typical coating, could react and form TiO phase at the interface. Meanwhile, some part of outmost ZrO<sub>2</sub> grain transformed from tetragonal to monoclinic structure under thermal stress during cooling process of sessile experiment. The lattice mismatch between α-Fe and ZrO<sub>2-</sub><em><sub>x</sub></em> was measured, and the value is as small as 3.29 % which shows definitely full wetting character, it is believed that the improvement in wettability is probably due to the dissolution of ZrO<sub>2</sub> and the generation of ZrO<sub>2-</sub><em><sub>x</sub></em> based on the fact of dynamic diffusion fitting results.</div></div>","PeriodicalId":423,"journal":{"name":"Scripta Materialia","volume":"259 ","pages":"Article 116536"},"PeriodicalIF":5.3,"publicationDate":"2025-01-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143170513","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 top-down strategy to determine interdiffusivities for fcc Ni-Co-Al-Ta quaternary system adopting diffusion triple and quadruple techniques

IF 5.3 2区材料科学

Scripta Materialia Pub Date : 2025-01-09 DOI: 10.1016/j.scriptamat.2024.116532

Xue-Ting Wu , Cheng-Hui Xia , Shilin Xia , Xiao-Gang Lu , Yizhu He , Hui Zhang

{"title":"A top-down strategy to determine interdiffusivities for fcc Ni-Co-Al-Ta quaternary system adopting diffusion triple and quadruple techniques","authors":"Xue-Ting Wu , Cheng-Hui Xia , Shilin Xia , Xiao-Gang Lu , Yizhu He , Hui Zhang","doi":"10.1016/j.scriptamat.2024.116532","DOIUrl":"10.1016/j.scriptamat.2024.116532","url":null,"abstract":"<div><div>To determine interdiffusivities in multi-component systems, the CALPHAD method traditionally follows a bottom-up sequence (i.e. from unary, binary up to ternary) in both experimental and optimization procedures before extrapolating to higher-order systems. However, this process faces challenges like low efficiency and considerable errors, often leading to reassessing sub-systems when studying higher-order systems. To address this problem, the present study on the fcc Ni-Co-Al-Ta system proposes a top-down strategy that designs samples simultaneously for binary and ternary sub-systems from a quaternary top-design perspective, significantly reducing experimental samples yet enabling mutual verification of sub-systems across samples. It is achieved by assembling diffusion triples and quadruples connecting six alloys end-to-end, and analyzing them using our newly developed two-dimensional inverse scheme. Atomic mobilities are inversely deduced from composition-distribution data sufficiently covering four surfaces of the quaternary single-phase composition quasi-pentahedron. This top-down strategy demonstrates its significant enhancement in efficiency and quality.</div></div>","PeriodicalId":423,"journal":{"name":"Scripta Materialia","volume":"259 ","pages":"Article 116532"},"PeriodicalIF":5.3,"publicationDate":"2025-01-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143170511","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

Estimation of residual stresses in single crystal sapphire wafers through eigenmode analysis

IF 5.3 2区材料科学

Scripta Materialia Pub Date : 2025-01-09 DOI: 10.1016/j.scriptamat.2025.116538

M. Gruber , J. Kreith , S. Lohrasbi , R. Bermejo , P. Supancic

{"title":"Estimation of residual stresses in single crystal sapphire wafers through eigenmode analysis","authors":"M. Gruber , J. Kreith , S. Lohrasbi , R. Bermejo , P. Supancic","doi":"10.1016/j.scriptamat.2025.116538","DOIUrl":"10.1016/j.scriptamat.2025.116538","url":null,"abstract":"<div><div>Methods for growing high-quality single-crystalline sapphire boules are energy-intensive due to the material's high melting point. Residual stresses and stress gradients due to temperature gradients and/or growth direction may develop during manufacturing process. An approach is developed based on acoustic measurements to resolve residual stresses in sapphire wafers. Experimental analyses reveal distinct resonance frequencies depending on the processing conditions and wafer's original position within the boule. Natural frequencies are calculated for different modes using a finite element model on samples with and without residual stresses. Shifts in resonance frequency between wafers can be explained by the presence of residual stresses of few MPa, which may not be resolved with conventional residual stress measurement methods. The proposed acoustic method demonstrates precision and repeatability in discerning subtle differences even between wafers from a single boule in a non-destructive manner, offering potential for optimization of single-crystalline sapphire wafer production processes.</div></div>","PeriodicalId":423,"journal":{"name":"Scripta Materialia","volume":"259 ","pages":"Article 116538"},"PeriodicalIF":5.3,"publicationDate":"2025-01-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143170508","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

Synergistic precipitation reactions in a novel high-temperature Ti-alloy

IF 5.3 2区材料科学

Scripta Materialia Pub Date : 2025-01-09 DOI: 10.1016/j.scriptamat.2025.116543

Ehsan Farabi , Xinyi He , David Obersteiner , Michael Musi , José Neves , Thomas Klein , Sophie Primig

{"title":"Synergistic precipitation reactions in a novel high-temperature Ti-alloy","authors":"Ehsan Farabi , Xinyi He , David Obersteiner , Michael Musi , José Neves , Thomas Klein , Sophie Primig","doi":"10.1016/j.scriptamat.2025.116543","DOIUrl":"10.1016/j.scriptamat.2025.116543","url":null,"abstract":"<div><div>There is a pressing need for the development of new Ti-alloys tailored to wire-based directed energy deposition (waDED), to enable the wider uptake of this additive manufacturing process by the aerospace and energy industries. Here we present a novel high-temperature Ti-alloy for waDED. Our alloy design aims to exploit phase transformations and precipitation to achieve fine and homogeneous microstructures during processing and to provide improved high-temperature mechanical properties. Our new alloy design features combined additions of Si, Cu, Nb, and Y. We study its microstructural evolution during a simulated waDED solidification route and after various heat-treatments replicating the waDED thermal history in a deposited layer. Our alloy shows significant potential for the formation of fine and equiaxed β grains during waDED. Atom probe and transmission electron microscopy reveal the formation of nm-sized Ti<sub>2</sub>Cu, (Ti, Zr)<sub>6</sub>Si<sub>3</sub> and sandwich-like Y-Cu dispersoids that are known to improve high-temperature properties in Ti-alloys.</div></div>","PeriodicalId":423,"journal":{"name":"Scripta Materialia","volume":"259 ","pages":"Article 116543"},"PeriodicalIF":5.3,"publicationDate":"2025-01-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143170530","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

High-temperature Mo-based bulk metallic glass with enhanced glass forming ability

IF 5.3 2区材料科学

Scripta Materialia Pub Date : 2025-01-07 DOI: 10.1016/j.scriptamat.2025.116540

Siming Xiao , Chenyang Li , Fengchun Chen , Chen Su , Wei Chen , Wen Chen , Shengfeng Guo

引用次数: 0

Synthesis and mechanical properties of low crack-density bulk hierarchical nanoporous copper

IF 5.3 2区材料科学

Scripta Materialia Pub Date : 2025-01-05 DOI: 10.1016/j.scriptamat.2024.116531

Shuo Sun, Weiyi Wang, Chengfeng Zhang, Wei Liu, Andy Godfrey

引用次数: 0

New mechanism revealed on the anomalous thermal expansion behavior of NbO2F

IF 5.3 2区材料科学

Scripta Materialia Pub Date : 2025-01-03 DOI: 10.1016/j.scriptamat.2024.116534

Wanwu Li , Kun Zhang , Xueting Zhao , Kuo Li , Yanchun Li , Wen Yin , Bing Li

{"title":"New mechanism revealed on the anomalous thermal expansion behavior of NbO2F","authors":"Wanwu Li , Kun Zhang , Xueting Zhao , Kuo Li , Yanchun Li , Wen Yin , Bing Li","doi":"10.1016/j.scriptamat.2024.116534","DOIUrl":"10.1016/j.scriptamat.2024.116534","url":null,"abstract":"<div><div>The near-zero thermal expansion of TaO<sub>2</sub>F across a broad temperature range indicates its potential application in components requiring high thermal shock resistance. Nevertheless, the structurally analogous NbO<sub>2</sub>F maintains low thermal expansion only at high temperatures and demonstrates significant positive thermal expansion at low temperatures, yet the underlying reasons for this anomalous behavior have remained elusive. In this study, we utilize neutron powder diffraction and synchrotron X-ray diffraction to uncover, for the first time, a temperature-induced structural phase transition in NbO₂F, shifting from a cubic to a rhombohedral phase. This discovery establishes a direct link between the phase transition and the anomalous thermal expansion behavior, resolving a long-standing scientific puzzle. Additionally, we construct a detailed pressure-temperature phase diagram, providing critical insights into the thermal properties of NbO₂F under varying conditions, offering valuable guidance for the design of materials with tailored thermal properties.</div></div>","PeriodicalId":423,"journal":{"name":"Scripta Materialia","volume":"258 ","pages":"Article 116534"},"PeriodicalIF":5.3,"publicationDate":"2025-01-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143096736","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

Enhanced toughness and wear behavior of TiNbWN films via a novel microstructure of rectangular nanocrystals embedded within an amorphous matrix

IF 5.3 2区材料科学

Scripta Materialia Pub Date : 2025-01-03 DOI: 10.1016/j.scriptamat.2024.116533

Xuelian Xiao , Leilei Chen , Kai Xu , Ming Lou , Keke Chang

引用次数: 0

Control of surface inverse segregation in Al–4.5Mg strips produced by industrial twin-roll casting process

IF 5.3 2区材料科学

Scripta Materialia Pub Date : 2024-12-31 DOI: 10.1016/j.scriptamat.2024.116528

Min-Seok Kim

引用次数: 0

Exceptional strength–ductility combination of heterostructured stainless steel for cryogenic applications

IF 5.3 2区材料科学

Scripta Materialia Pub Date : 2024-12-30 DOI: 10.1016/j.scriptamat.2024.116527

Liliana Romero-Resendiz , Yi Huang , Alexander J. Knowles , Joe Kelleher , Tung Lik Lee , Tayebeh Mousavi , Muhammad Naeem

{"title":"Exceptional strength–ductility combination of heterostructured stainless steel for cryogenic applications","authors":"Liliana Romero-Resendiz , Yi Huang , Alexander J. Knowles , Joe Kelleher , Tung Lik Lee , Tayebeh Mousavi , Muhammad Naeem","doi":"10.1016/j.scriptamat.2024.116527","DOIUrl":"10.1016/j.scriptamat.2024.116527","url":null,"abstract":"<div><div>Heterostructured materials have been demonstrated as a new route to improve the strength–ductility trade-off of metallic materials. However, their mechanical performance at cryogenic temperatures has been scarcely explored. This study investigates the mechanical properties and phase transformation of a heterostructured and antimicrobial stainless steel (HS&AMSS), 316L+Cu, at a cryogenic temperature of 77 K. By using in-situ neutron diffraction, we revealed real-time phase evolution under tensile deformation. The HS&AMSS demonstrated exceptional mechanical properties at 77 K, including a significantly higher yield strength of 1400 MPa combined with an excellent ductility of 36 % compared to conventional stainless steels and heterostructured multicomponent alloys. The outstanding mechanical performance is attributed to the synergistic effect of multiple strengthening and strain hardening mechanisms. These findings suggest that HS&AMSS is a promising material for applications requiring robust mechanical properties in cryogenic environments, such as hydrogen storage, aerospace, superconducting magnets and polar infrastructure.</div></div>","PeriodicalId":423,"journal":{"name":"Scripta Materialia","volume":"258 ","pages":"Article 116527"},"PeriodicalIF":5.3,"publicationDate":"2024-12-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143092678","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