Scripta Materialia最新文献_第5页

The intricacies of α-β microstructures in titanium alloys: Insights into α-phase variant spatial distribution and orientation 钛合金中α-β显微组织的复杂性：对α-相变化空间分布和取向的认识

IF 5.3 2区材料科学

Scripta Materialia Pub Date : 2025-04-12 DOI: 10.1016/j.scriptamat.2025.116690

Shenglu Lu, Alexander E. Medvedev, Dong Qiu, Tingting Song, Milan Brandt, Ma Qian

{"title":"The intricacies of α-β microstructures in titanium alloys: Insights into α-phase variant spatial distribution and orientation","authors":"Shenglu Lu, Alexander E. Medvedev, Dong Qiu, Tingting Song, Milan Brandt, Ma Qian","doi":"10.1016/j.scriptamat.2025.116690","DOIUrl":"10.1016/j.scriptamat.2025.116690","url":null,"abstract":"<div><div>Dual-phase α-β titanium alloys are crucial for various titanium applications. This study examines the spatial distribution of α-phase variants in two commercial-grade titanium alloys (Ti-6Al-2Sn-4Zr-2Mo and Ti-6Al-4V), uncovering previously unreported important microstructural features. Key findings include: (i) parallel α-laths observed in two-dimensional (2D) images can originate from distinct α-phase variants, complicating traditional methods of colony classification; (ii) each α-phase variant approximately follows the {11 11 <span><math><mover><mrow><mn>13</mn></mrow><mo>‾</mo></mover></math></span>} plane traces of its prior-β grain, providing a unique approach to investigating the configuration and spatial distribution of α-phase variants; and (iii) the dihedral angle between the broad faces of two α-phase variants deviates from their misorientation angle, yet a clear relationship exists between variant orientations and misorientation characteristics. These findings enhance our understanding of α-β Ti alloy microstructures, underscoring the critical need for precise characterization and elucidation of their complex features.</div></div>","PeriodicalId":423,"journal":{"name":"Scripta Materialia","volume":"263 ","pages":"Article 116690"},"PeriodicalIF":5.3,"publicationDate":"2025-04-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143820474","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}

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Enhanced fatigue resistance of 304 stainless steel through cryogenic cyclic plastic strengthening and heat treatment 通过低温循环塑性强化和热处理，提高了304不锈钢的抗疲劳性能

IF 5.3 2区材料科学

Scripta Materialia Pub Date : 2025-04-11 DOI: 10.1016/j.scriptamat.2025.116696

Zongchi Wang , Bingbing Li , Jingtai Yu , Shouwen Shi , Xingang Wang , Xu Chen

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High-entropy oxide Ti-Zr-Hf-Nb-Ta-O as photoanode for photoelectrocatalytic hydrogen generation 高熵氧化物Ti-Zr-Hf-Nb-Ta-O作为光电催化制氢的光阳极

IF 5.3 2区材料科学

Scripta Materialia Pub Date : 2025-04-11 DOI: 10.1016/j.scriptamat.2025.116698

Thanh Tam Nguyen , Makoto Arita , Ryusei Saeki , Kaveh Edalati

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Abnormal impacts of pre-deformation on the martensitic transformation behaviors of precursory NiTiNb alloys 预变形对前生镍钛铌合金马氏体转变行为的异常影响

IF 5.3 2区材料科学

Scripta Materialia Pub Date : 2025-04-09 DOI: 10.1016/j.scriptamat.2025.116693

Youyi Yang, Qiuzhen Li, Pengfei Gao, Jingyuan Guo, Lishan Cui, Kaiyuan Yu

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Complementary layer thickness effects of Q235 and SUS304 layers of multilayered steels for improving of tensile strength and plasticity simultaneously Q235和SUS304层厚度的互补效应对多层钢抗拉强度和塑性的同时提高

IF 5.3 2区材料科学

Scripta Materialia Pub Date : 2025-04-07 DOI: 10.1016/j.scriptamat.2025.116692

Zengmeng Lin , Baoxi Liu , Kaisheng Ming , Pingguang Xu , Fuxing Yin , Shijian Zheng

{"title":"Complementary layer thickness effects of Q235 and SUS304 layers of multilayered steels for improving of tensile strength and plasticity simultaneously","authors":"Zengmeng Lin , Baoxi Liu , Kaisheng Ming , Pingguang Xu , Fuxing Yin , Shijian Zheng","doi":"10.1016/j.scriptamat.2025.116692","DOIUrl":"10.1016/j.scriptamat.2025.116692","url":null,"abstract":"<div><div>Complementary layer thickness effects on strength and plasticity in Q235 and SUS304 steels provide a novel strategy to realize high strength and high plasticity of heterogeneous Q235/SUS304 multilayered steel. In this work, the tensile deformation behaviors and fracture characteristics of vacuum hot-rolled Q235/SUS304 multilayered steel with various layer thicknesses ranging from 223 μm to 5 μm were deeply investigated. The tensile strength improved with the reduction of layer thickness, and the uniform elongation was first increased and then decreased with decreasing layer thickness, and the peak value appeared at the layer thickness of 20 μm. Interestingly, the fracture elongation forms a high plateau value within the 10∼20 μm range. Further analysis reveals that the severe strain localization in the brittle SUS304 thin layers is delayed by the ductile Q235 layers, which is mainly attributed to the different texture evolution and dislocation configuration characteristics during tensile deformation.</div></div>","PeriodicalId":423,"journal":{"name":"Scripta Materialia","volume":"263 ","pages":"Article 116692"},"PeriodicalIF":5.3,"publicationDate":"2025-04-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143785222","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}

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Modification of M23C6 carbides by Ti addition in Ni-based polycrystalline superalloy ni基多晶高温合金中Ti对M23C6碳化物的改性

IF 5.3 2区材料科学

Scripta Materialia Pub Date : 2025-04-07 DOI: 10.1016/j.scriptamat.2025.116686

Han Wang , Xiang Fei , Shijie Sun , Naicheng Sheng , Guichen Hou , Jinguo Li , Yizhou Zhou , Xiaofeng Sun

{"title":"Modification of M23C6 carbides by Ti addition in Ni-based polycrystalline superalloy","authors":"Han Wang , Xiang Fei , Shijie Sun , Naicheng Sheng , Guichen Hou , Jinguo Li , Yizhou Zhou , Xiaofeng Sun","doi":"10.1016/j.scriptamat.2025.116686","DOIUrl":"10.1016/j.scriptamat.2025.116686","url":null,"abstract":"<div><div>The M<sub>23</sub>C<sub>6</sub> phase is usually precipitated in high-Cr content Ni-based polycrystalline superalloys, which has significant effects on properties of the alloys. In this work, the role of Ti on the modification of M<sub>23</sub>C<sub>6</sub> carbides was investigated. In the alloys without Ti (6.6Al-0Ti alloy), MC carbides decomposed and M<sub>23</sub>C<sub>6</sub> carbides precipitated during primary aging treatment. In contrast, alloy containing Ti (3.8Al-3Ti alloy), MC carbides remained stable throughout aging process and M<sub>23</sub>C<sub>6</sub> carbides precipitated during secondary aging treatment. Furthermore, M<sub>23</sub>C<sub>6</sub> carbides distributed along grain boundaries in 6.6Al-0Ti alloy were larger and more regular. According to first-principle calculations, the formation energy of MC carbide in 3.8Al-3Ti alloy was lower, which indicated MC carbide was more stable, resulting in limited carbon available for M<sub>23</sub>C<sub>6</sub> carbides precipitation. Therefore, the introduction of Ti would inhibit precipitation of M<sub>23</sub>C<sub>6</sub> carbides due to more stable MC carbides in superalloy containing Ti.</div></div>","PeriodicalId":423,"journal":{"name":"Scripta Materialia","volume":"263 ","pages":"Article 116686"},"PeriodicalIF":5.3,"publicationDate":"2025-04-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143785221","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

Towards light-weighting high entropy superalloy while retaining ambient strength-ductility synergy, high temperature strength and oxidation resistance 向轻量化高熵高温合金方向发展，同时保持环境强度-延展性协同、高温强度和抗氧化性

IF 5.3 2区材料科学

Scripta Materialia Pub Date : 2025-04-07 DOI: 10.1016/j.scriptamat.2025.116687

S.S. Nene, A. Dutta, G.R. Nandeshwar, A.R. Balpande

{"title":"Towards light-weighting high entropy superalloy while retaining ambient strength-ductility synergy, high temperature strength and oxidation resistance","authors":"S.S. Nene, A. Dutta, G.R. Nandeshwar, A.R. Balpande","doi":"10.1016/j.scriptamat.2025.116687","DOIUrl":"10.1016/j.scriptamat.2025.116687","url":null,"abstract":"<div><div>Conventional superalloys offer excellent high-temperature strength (HTS), oxidation resistance, and good room-temperature (RT) tensile ductility, however, at the expense of either increased density or high material costs. Here, we present a lightweight (7.53 g/cc) Ni<sub>30</sub>Co<sub>30</sub>Cr<sub>15</sub>V<sub>10</sub>Fe<sub>5</sub>Al<sub>5</sub>Ti<sub>2.5</sub>Si<sub>2.5</sub> (at. %) high entropy superalloy (Ni-HESA) that achieves a remarkable strength-ductility synergy at RT (1296 MPa, 40 %), excellent HTS (600 MPa at 800 °C), and isothermal oxidation resistance at 900 °C for 96 h exposure (parabolic oxidation coefficient ∼3.693 × 10<sup>–4</sup> mg<sup>2</sup>cm<sup>-4</sup>s<sup>-1</sup>) in its most microstructurally complex state. This microstructural complexity in Ni-HESA arises from the presence of γ′ (L1<sub>2<img></sub>Ni<sub>3</sub>(Si, Ti) type) precipitate, annealing twins, and grain size modality within the γ-f.c.c. matrix. These features enhance RT work hardenability through back-stress strengthening while ensuring substantial microstructural stability at elevated temperatures, thereby improving both strength and oxidation resistance. The aforementioned property profile of Ni-HESA positions it as a promising superalloy for high-temperature applications, offering enhanced fuel efficiency.</div></div>","PeriodicalId":423,"journal":{"name":"Scripta Materialia","volume":"263 ","pages":"Article 116687"},"PeriodicalIF":5.3,"publicationDate":"2025-04-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143785223","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

Obtaining a strong and ductile Co-rich high entropy alloy via synergistic effect of pre-twinning and nanolamellar L12 precipitates 通过预孪晶和纳米层状L12析出相的协同作用，获得了一种强韧的富钴高熵合金

IF 5.3 2区材料科学

Scripta Materialia Pub Date : 2025-04-04 DOI: 10.1016/j.scriptamat.2025.116685

Shangshu Wu , Yi Liu , Junbo Ding , Jiaxing Song , Quanwei Tian , Si Lan , Meng Wang , Yingqi Fan , Rong Huang , Shanyue Liang , Jin Tian , Zhen Chen , Ruoyu Liu , Jialin Chen , Xingwang Cheng

{"title":"Obtaining a strong and ductile Co-rich high entropy alloy via synergistic effect of pre-twinning and nanolamellar L12 precipitates","authors":"Shangshu Wu , Yi Liu , Junbo Ding , Jiaxing Song , Quanwei Tian , Si Lan , Meng Wang , Yingqi Fan , Rong Huang , Shanyue Liang , Jin Tian , Zhen Chen , Ruoyu Liu , Jialin Chen , Xingwang Cheng","doi":"10.1016/j.scriptamat.2025.116685","DOIUrl":"10.1016/j.scriptamat.2025.116685","url":null,"abstract":"<div><div>Alloys with high strength and competent ductility are highly demanded for modern engineering applications but difficult to design and prepare. In this study, we design a Co-rich Co<sub>35</sub>Cr<sub>20</sub>Fe<sub>20</sub>Ni<sub>20</sub>Al<sub>2</sub>Ti<sub>3</sub> HEA that exhibits excellent tensile properties, facilitated by unique microstructures, namely pre-twins and nanolamellar L1<sub>2</sub> precipitates, which are introduced via multistep deformation and annealing. Comprehensive microstructural characterization, carried out through electron back scattering diffraction and transmission electron microscopy, demonstrates that interactions among lattice dislocations, pre-twins and nanolamellar L1<sub>2</sub> precipitates raise the dislocations slip stress barrier and dislocation storage rate, gifting the HEA a high strength and ductility mechanical properties. The present study provides insight into the fabrication of ultra-strong and ductile HEAs by tuning the substructures.</div></div>","PeriodicalId":423,"journal":{"name":"Scripta Materialia","volume":"263 ","pages":"Article 116685"},"PeriodicalIF":5.3,"publicationDate":"2025-04-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143767840","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}

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Anomalous interactions of non-coplanar dislocation dipole in intermetallic compounds 金属间化合物中非共面位错偶极子的反常相互作用

IF 5.3 2区材料科学

Scripta Materialia Pub Date : 2025-04-03 DOI: 10.1016/j.scriptamat.2025.116684

Mingyu Gong , Haijian Chu , Yong Mao , Jian Wang

引用次数: 0

A strategy for Triple-TRIP-induced ultra-high room-temperature ductility of high-entropy alloys 三次trip诱导的高熵合金超高室温延展性策略

IF 5.3 2区材料科学

Scripta Materialia Pub Date : 2025-04-03 DOI: 10.1016/j.scriptamat.2025.116683

Jinke Han , Ge Zhou , Haoyu Zhang , Siqian Zhang , Mingjiu Zhao , Chenyang Lu , Zhengxiong Su , Yuhan Peng , Xin Che , Lijia Chen , Peter K. Liaw

{"title":"A strategy for Triple-TRIP-induced ultra-high room-temperature ductility of high-entropy alloys","authors":"Jinke Han , Ge Zhou , Haoyu Zhang , Siqian Zhang , Mingjiu Zhao , Chenyang Lu , Zhengxiong Su , Yuhan Peng , Xin Che , Lijia Chen , Peter K. Liaw","doi":"10.1016/j.scriptamat.2025.116683","DOIUrl":"10.1016/j.scriptamat.2025.116683","url":null,"abstract":"<div><div>Metastable dual-phase HEAs with fine-grain structure exhibit the B-TRIP effect during room-temperature tensile testing, with a maximum elongation at a break of 77 %. This paper adopts three strategies: SFE calculation, fine grain structure preparation, and phase ratio control, to design and prepare a new Fe<sub>49</sub>Mn<sub>33.2</sub>Cr<sub>9.6</sub>Co<sub>8.2</sub> HEA that can achieve multiple interconversion conditions between FCC and HCP phases thermodynamically in order to fully leverage the synergistic effect of SFE phase composition and stability grain size on room-temperature ductility. The results showed that the alloy did not fracture after undergoing the B-TRIP effect but underwent FCC phase to HCP phase transformation again at a deformation of 70 % until the fracture process. At the time of fracture, the HCP phase content remained at around 40 %, and the alloy exhibited a particular five-stage strain-hardening behavior. Under the Triple-TRIP effect, the highest post-fracture elongation at room temperature reported so far was obtained, which was 91 %.</div></div>","PeriodicalId":423,"journal":{"name":"Scripta Materialia","volume":"263 ","pages":"Article 116683"},"PeriodicalIF":5.3,"publicationDate":"2025-04-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143761323","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