Pub Date : 2025-12-25DOI: 10.1016/j.jmst.2025.12.034
Yunjia Wu, Yang An, Zhifeng Huang, Qingyong Tian, Bin Fan, Hua Bai
{"title":"Upscaling of perovskite photovoltaics: Statistical analysis and key issues","authors":"Yunjia Wu, Yang An, Zhifeng Huang, Qingyong Tian, Bin Fan, Hua Bai","doi":"10.1016/j.jmst.2025.12.034","DOIUrl":"https://doi.org/10.1016/j.jmst.2025.12.034","url":null,"abstract":"","PeriodicalId":16154,"journal":{"name":"Journal of Materials Science & Technology","volume":"9 1","pages":""},"PeriodicalIF":10.9,"publicationDate":"2025-12-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145844869","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
As a critical lightweight material in aerospace, titanium-aluminum (TiAl) alloys are ideal alternatives to nickel-based superalloys. TNM alloys, a representative of third-generation TiAl alloys, suffer from high-temperature fatigue degradation due to heterogeneous interface weakening arising from their dual-phase structure, consisting of soft and hard phases, and lamellar microstructure. To address this critical issue, the present study proposes a novel electroshock treatment (EST) process, which aims to regulate and strengthen the heterogeneous interfaces of TNM alloys by introducing electroshock energy, thereby enhancing their fatigue resistance. Compared with the received sample, the high-temperature rotary-bending fatigue performance at 800°C was improved by about 67.6% under the optimal process parameters. Multiscale characterization results demonstrate that the EST effectively mitigates the degree of dislocation entanglement and pile-up near the heterogeneous interfaces of α2/γ and β0/γ. Moreover, the EST drives the ordered rearrangement of atoms at the α2/γ lamellar interfaces and β0/γ interfaces. It increases the average atomic interplanar spacing of the characterized regions on the γ-side of the α2/γ lamellar interfaces and β0/γ interfaces from 0.249 to 0.259 nm and from 0.291 to 0.293 nm, respectively. This effect efficiently relieves the compressive stress among atoms in the lattice-distorted regions. Simultaneously, the fluctuation ranges of strain intensity in the εyy significantly decreased from (−0.15 to 0.15) and (−0.16 to 0.16) to (−0.05 to 0.01) and (−0.11 to 0.03), respectively. Through quantum mechanical theoretical and molecular dynamics simulations, the energy coupling and conversion processes during the scattering of directionally drifted free electrons and high-energy metastable atoms were elucidated at the atomic scale. A theoretical model describing electron-atom nonequilibrium scattering was further established, revealing the underlying mechanism that governs the reconfiguration of heterogeneous interfaces and the enhancement of fatigue resistance in TNM alloys.
{"title":"Enhancing fatigue performance of TNM Alloy via electroshock energy-induced heterogeneous interface reconfiguration","authors":"Shi-Long Guo, Yan-Li Song, Jun-Hao Hu, Jue Lu, Cheng-Jia Wang, Lin Hua","doi":"10.1016/j.jmst.2025.12.036","DOIUrl":"https://doi.org/10.1016/j.jmst.2025.12.036","url":null,"abstract":"As a critical lightweight material in aerospace, titanium-aluminum (TiAl) alloys are ideal alternatives to nickel-based superalloys. TNM alloys, a representative of third-generation TiAl alloys, suffer from high-temperature fatigue degradation due to heterogeneous interface weakening arising from their dual-phase structure, consisting of soft and hard phases, and lamellar microstructure. To address this critical issue, the present study proposes a novel electroshock treatment (EST) process, which aims to regulate and strengthen the heterogeneous interfaces of TNM alloys by introducing electroshock energy, thereby enhancing their fatigue resistance. Compared with the received sample, the high-temperature rotary-bending fatigue performance at 800°C was improved by about 67.6% under the optimal process parameters. Multiscale characterization results demonstrate that the EST effectively mitigates the degree of dislocation entanglement and pile-up near the heterogeneous interfaces of α<sub>2</sub>/γ and β<sub>0</sub>/γ. Moreover, the EST drives the ordered rearrangement of atoms at the α<sub>2</sub>/γ lamellar interfaces and β<sub>0</sub>/γ interfaces. It increases the average atomic interplanar spacing of the characterized regions on the γ-side of the α<sub>2</sub>/γ lamellar interfaces and β<sub>0</sub>/γ interfaces from 0.249 to 0.259 nm and from 0.291 to 0.293 nm, respectively. This effect efficiently relieves the compressive stress among atoms in the lattice-distorted regions. Simultaneously, the fluctuation ranges of strain intensity in the <em>ε<sub>yy</sub></em> significantly decreased from (−0.15 to 0.15) and (−0.16 to 0.16) to (−0.05 to 0.01) and (−0.11 to 0.03), respectively. Through quantum mechanical theoretical and molecular dynamics simulations, the energy coupling and conversion processes during the scattering of directionally drifted free electrons and high-energy metastable atoms were elucidated at the atomic scale. A theoretical model describing electron-atom nonequilibrium scattering was further established, revealing the underlying mechanism that governs the reconfiguration of heterogeneous interfaces and the enhancement of fatigue resistance in TNM alloys.","PeriodicalId":16154,"journal":{"name":"Journal of Materials Science & Technology","volume":"70 1","pages":""},"PeriodicalIF":10.9,"publicationDate":"2025-12-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145844676","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-12-24DOI: 10.1016/j.jmst.2025.12.029
Yang Yang, Jing Qiao, Xue Zhang, Bingke Zhang, Jiurong Liu
The escalation of communication technology intensifies GHz-range electromagnetic pollution, driving demand for high-performance electromagnetic wave (EMW) absorbing materials. Electrospun carbon nanofibers (CNFs) are highly promising due to their low density, tunable conductivity, and the unique advantages of their one-dimensional fibrous architecture, which promotes efficient conductive pathways and interfacial polarization for enhanced electromagnetic energy dissipation. But they commonly suffer from impedance mismatch. Incorporating magnetic components effectively addresses this limitation, synergistically optimizing impedance and introducing magnetic loss. This review summarizes recent progress in electrospun magnetic CNFs for EMW absorption. Following an introduction to fundamental theory, we systematically categorize these materials based on composition and structure, analyzing their respective design principles, electromagnetic characteristics, absorption performance, merits, and challenges. Future prospects for advancing electrospun magnetic CNF absorbers are also discussed.
{"title":"Electrospun magnetic carbon nanofibers for electromagnetic wave absorption: A review","authors":"Yang Yang, Jing Qiao, Xue Zhang, Bingke Zhang, Jiurong Liu","doi":"10.1016/j.jmst.2025.12.029","DOIUrl":"https://doi.org/10.1016/j.jmst.2025.12.029","url":null,"abstract":"The escalation of communication technology intensifies GHz-range electromagnetic pollution, driving demand for high-performance electromagnetic wave (EMW) absorbing materials. Electrospun carbon nanofibers (CNFs) are highly promising due to their low density, tunable conductivity, and the unique advantages of their one-dimensional fibrous architecture, which promotes efficient conductive pathways and interfacial polarization for enhanced electromagnetic energy dissipation. But they commonly suffer from impedance mismatch. Incorporating magnetic components effectively addresses this limitation, synergistically optimizing impedance and introducing magnetic loss. This review summarizes recent progress in electrospun magnetic CNFs for EMW absorption. Following an introduction to fundamental theory, we systematically categorize these materials based on composition and structure, analyzing their respective design principles, electromagnetic characteristics, absorption performance, merits, and challenges. Future prospects for advancing electrospun magnetic CNF absorbers are also discussed.","PeriodicalId":16154,"journal":{"name":"Journal of Materials Science & Technology","volume":"87 1","pages":""},"PeriodicalIF":10.9,"publicationDate":"2025-12-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145813647","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-12-23DOI: 10.1016/j.jmst.2025.12.031
Achieving a sharp Goss texture remains a major challenge in the development of high-grade grain-oriented electrical steels (GOESs). Here, we show that…
{"title":"Toward sharp Goss texture in grain-oriented electrical steels with Sn addition","authors":"","doi":"10.1016/j.jmst.2025.12.031","DOIUrl":"https://doi.org/10.1016/j.jmst.2025.12.031","url":null,"abstract":"Achieving a sharp Goss texture remains a major challenge in the development of high-grade grain-oriented electrical steels (GOESs). Here, we show that…","PeriodicalId":16154,"journal":{"name":"Journal of Materials Science & Technology","volume":"172 1","pages":""},"PeriodicalIF":10.9,"publicationDate":"2025-12-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145813646","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
京公网安备 11010802042870号
京ICP备2023020795号-1
扫码关注我们
求助内容：
应助结果提醒方式：