Scripta Materialia最新文献_第10页

Effect of applied stress on radiation-induced loop and raft formation in molybdenum 外加应力对钼中辐射诱发环和筏形形成的影响

IF 5.3 2区材料科学

Scripta Materialia Pub Date : 2025-05-16 DOI: 10.1016/j.scriptamat.2025.116757

H.T. Vo , M.M. Schneider , W.Y. Chen , A.A. Kohnert

引用次数: 0

Solute clustering behaviour during natural ageing in Al-Cu alloys containing Sc and Zr 含Sc和Zr的Al-Cu合金自然时效过程中的溶质聚类行为

IF 5.3 2区材料科学

Scripta Materialia Pub Date : 2025-05-16 DOI: 10.1016/j.scriptamat.2025.116764

Lu Jiang , Kathleen Wood , Anna Sokolova , Thomas Dorin

{"title":"Solute clustering behaviour during natural ageing in Al-Cu alloys containing Sc and Zr","authors":"Lu Jiang , Kathleen Wood , Anna Sokolova , Thomas Dorin","doi":"10.1016/j.scriptamat.2025.116764","DOIUrl":"10.1016/j.scriptamat.2025.116764","url":null,"abstract":"<div><div>This study investigates the effects of scandium (Sc) and zirconium (Zr) microalloying on solute clustering in Al-Cu alloys during natural ageing. Using atom probe tomography (APT), we reveal a full suppression of Cu-rich cluster formation in the AlCuScZr alloy compared to its Sc- and Zr-free counterpart. Instead, a distinct type of cluster, comprising Si, Sc and Zr forms, preferentially at Al<sub>3</sub>(Sc, Zr) dispersoids/Al interfaces, driven by strong Si-Sc-vacancy and Si-Zr-vacancy binding energies. These sites act as vacancy traps, redirecting clustering pathways away from the Cu-rich clusters typically observed in Al-Cu alloys. Small-angle x-ray scattering (SAXS) indicates suggest that the natural ageing kinetics in the AlCuScZr alloys are significantly delayed, likely due to the limited availability of Si, Sc and Zr solutes in the matrix. As a result, the AlCuScZr alloy exhibits slower hardening response during natural ageing. This is the first report of Si-Sc-Zr cluster formation during natural ageing in Al alloys, providing critical insights into how dispersoids, solute interactions, and vacancies govern early-stage clustering and mechanical evolution.</div></div>","PeriodicalId":423,"journal":{"name":"Scripta Materialia","volume":"265 ","pages":"Article 116764"},"PeriodicalIF":5.3,"publicationDate":"2025-05-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144068017","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

Damage buildup in multilayer hexagonal boron nitride films under Ar ion bombardment 氩离子轰击下多层六方氮化硼薄膜的损伤形成

IF 5.3 2区材料科学

Scripta Materialia Pub Date : 2025-05-15 DOI: 10.1016/j.scriptamat.2025.116756

M. Seo , L.B. Bayu Aji , S.C. Kim , Y.K. Tzeng , A.A. Baker , F.M. O'Neill , S. Chu , S.O. Kucheyev

引用次数: 0

Mitigating solid-state dewetting via abnormal grain growth under epitaxial conditions 在外延条件下通过异常晶粒生长减轻固态脱湿

IF 5.3 2区材料科学

Scripta Materialia Pub Date : 2025-05-15 DOI: 10.1016/j.scriptamat.2025.116738

M. Landes, M. Dierner, J. Krönert, J. Will, E. Spiecker

引用次数: 0

In-situ SANS observations on the magnetic-field-suppressed phase separation in duplex stainless steels 双相不锈钢磁场抑制相分离的原位SANS观察

IF 5.3 2区材料科学

Scripta Materialia Pub Date : 2025-05-15 DOI: 10.1016/j.scriptamat.2025.116760

Jianling Liu , Yadunandan Das , Pavel Korzhavyi , Stephen M. King , Joakim Odqvist , Peter Hedström

引用次数: 0

Intrinsic pre-strain effect in Ti-Ni based shape memory alloys Ti-Ni基形状记忆合金的本征预应变效应

IF 5.3 2区材料科学

Scripta Materialia Pub Date : 2025-05-15 DOI: 10.1016/j.scriptamat.2025.116754

Jinglin Ren, Yulin Chen, Jiawei Gu, Peng Zhang, Chen Chen, Jian Zhang

{"title":"Intrinsic pre-strain effect in Ti-Ni based shape memory alloys","authors":"Jinglin Ren, Yulin Chen, Jiawei Gu, Peng Zhang, Chen Chen, Jian Zhang","doi":"10.1016/j.scriptamat.2025.116754","DOIUrl":"10.1016/j.scriptamat.2025.116754","url":null,"abstract":"<div><div>Shape memory effect (SME) in shape memory alloys (SMAs) results from deformation below <em>A</em><sub>f</sub>, accompanying pre-strain effect (PSE) which was usually implicated by dislocations. We systematically investigate the effects of small pre-strain (<3.8 %, average martensitic transformation strain) in Ti<sub>49</sub>Ni<sub>45.7</sub>Cu<sub>4.9</sub>Cr<sub>0.4</sub> SMA with strong dislocation resistance against (negligible dislocations introduced during) martensitic transformations. It is demonstrated by the disappearance of functional fatigue upon thermal cycling, and unchanged transformation characteristics after removing PSE by reverse transformation. With small pre-strain, martensites remaining twinned (multi-domain) by TEM, however exhibit increased reverse transformation characteristic temperatures. It is thus defined as intrinsic PSE (IPSE), which is contrast to the common belief that PSE is solely attributed to elastic energy releasing of detwinning (single-domain). The IPSE is explained by local stress field raised by surrounding constraints on the pre-detwinned and reoriented martensites. Our findings shed lights on the understandings of PSE and thus associated SME in SMAs.</div></div>","PeriodicalId":423,"journal":{"name":"Scripta Materialia","volume":"265 ","pages":"Article 116754"},"PeriodicalIF":5.3,"publicationDate":"2025-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144068016","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

On the preference of liquid-metal embrittlement along high-angle grain-boundaries in galvanized steels 镀锌钢高角晶界液态金属脆化的偏好

IF 5.3 2区材料科学

Scripta Materialia Pub Date : 2025-05-14 DOI: 10.1016/j.scriptamat.2025.116723

Yuki Ikeda , Seungchang Han , Theophilus Wallis , Reza Darvishi Kamachali , Robert Maaß

引用次数: 0

Tailoring intermetallics via cellular boundary enables strong yet ductile property: An example in Gd-enriched neutron shielding alloys

IF 5.3 2区材料科学

Scripta Materialia Pub Date : 2025-05-14 DOI: 10.1016/j.scriptamat.2025.116759

Kunlei Hou , Suyun He , Boxin Wei , Luqing Cui , Yihu Zang , Peng Zhao , Tian Liang , Guangcai Ma , Yingche Ma

引用次数: 0

Eutectic melting of alloy microparticles upon low velocity impact 合金微粒在低速冲击下的共晶熔化

IF 5.3 2区材料科学

Scripta Materialia Pub Date : 2025-05-14 DOI: 10.1016/j.scriptamat.2025.116763

Muhammad Shehryar Khan , Christopher A. Schuh

引用次数: 0

Mechanical behavior of BCC-superalloys bcc -高温合金的力学行为

IF 5.3 2区材料科学

Scripta Materialia Pub Date : 2025-05-14 DOI: 10.1016/j.scriptamat.2025.116748

Qing Wang , Zhenhua Wang , Rui Wang , Alexander J. Knowles , Christopher H. Zenk , Gian Song , Chanho Lee , Peter K. Liaw , Tongmin Wang

{"title":"Mechanical behavior of BCC-superalloys","authors":"Qing Wang , Zhenhua Wang , Rui Wang , Alexander J. Knowles , Christopher H. Zenk , Gian Song , Chanho Lee , Peter K. Liaw , Tongmin Wang","doi":"10.1016/j.scriptamat.2025.116748","DOIUrl":"10.1016/j.scriptamat.2025.116748","url":null,"abstract":"<div><div>Body-centered-cubic (BCC)-base superalloys primarily containing refractory elements have great potential as one kind of ‘beyond Ni-base superalloy’ materials, owing to their increased melting points and analogous coherent microstructures composed of BCC solid solution and its ordered B2 or L2<sub>1</sub> phases. The mechanical behavior of BCC superalloys (including ferritic and refractory superalloys) is a key topic that has been progressively investigated. However, major challenges remain in terms of room-temperature brittleness and high-temperature creep resistance, as well as mechanical property degradation induced by the coarsening of BCC-B2/L2<sub>1</sub> coherent microstructure or/and brittle phase precipitation. This viewpoint paper concentrates on the capability and issues regarding the mechanical behavior (strength, ductility, and creep) of BCC superalloys across diverse systems, in which the crucial influence factors are highlighted. Then the ductility challenges of these high-strength superalloys will be discussed. And possible approaches to improve mechanical properties will also be explored for developing novel BCC superalloys.</div></div>","PeriodicalId":423,"journal":{"name":"Scripta Materialia","volume":"267 ","pages":"Article 116748"},"PeriodicalIF":5.3,"publicationDate":"2025-05-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144522200","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