Materials Characterization最新文献

{"title":"Optimization design of high-temperature resistant hypoeutectic Al7Si alloy via CALPHAD calculations and experimental validation","authors":"Bei-yue Deng,&nbsp;Zheng Gong,&nbsp;Fang-he Huang,&nbsp;Hong-mei Yang,&nbsp;Meng-nie Li","doi":"10.1016/j.matchar.2025.115607","DOIUrl":"10.1016/j.matchar.2025.115607","url":null,"abstract":"<div><div>The hypoeutectic heat-resistant Al<img>Si alloy was optimized through the CALPHAD method combined with experimental verification. Computational results indicate that the copper content variation beyond the range of 0.4–1.0 wt% have a negligible influence on the phase composition and properties of the cast alloys. Within low copper contents (0.4–1.0 wt%), only the Al₃Ni phase forms. As the Ni content increases, the volume fraction of the Al₃Ni phase increases, improving the high-temperature performance of the alloy. Consequently, the Al-7Si-0.5Cu-xNi system was selected for experimental validation. Experimental findings confirmed the formation of a single Al₃Ni strengthening phase, with the variation in its volume fraction showing good agreement with computational predictions. With the increase of Ni content, the volume fraction of Al₃Ni phase increases significantly. The Al₃Ni phase in the as-cast alloys mainly exhibits lamellar and skeletal shape, with a small amount of fibrous shape. During heat treatment, notable microstructural evolution occurs in both Al₃Ni phase and Si phase. The lamellar ε-Al₃Ni in the as-cast microstructure gradually dissolves, resulting in a microstructure predominantly composed of skeletal γ-Al₃Ni phase and fibrous or spherical δ-Al₃Ni. Concurrently, the coarse reticular or lamellar eutectic Si phase mostly transforms into a finer fibrous or spherical morphology. The mechanical properties of the alloy are improved. The room-temperature strength exceeds 310 MPa, the high-temperature ultimate tensile strength (UTS) at 200 °C surpasses 240 MPa, and the UTS at 300 °C is 40 % higher than that of the reference alloy.</div></div>","PeriodicalId":18727,"journal":{"name":"Materials Characterization","volume":"229 ","pages":"Article 115607"},"PeriodicalIF":5.5,"publicationDate":"2025-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145265562","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}

{"title":"Physics-informed and explainable machine learning framework for performance prediction and design of Ti (C, N)-based cermets","authors":"Wan Xiong ,&nbsp;Yixuan Jiang ,&nbsp;Yingrui Sun ,&nbsp;Kun Shen ,&nbsp;Miaojin He ,&nbsp;Ying Deng ,&nbsp;Xiang Wu ,&nbsp;Qiaowang Chen ,&nbsp;Yanhua Zhang","doi":"10.1016/j.matchar.2025.115584","DOIUrl":"10.1016/j.matchar.2025.115584","url":null,"abstract":"<div><div>Ti (C, N)-based cermets exhibit an exceptional combination of ceramic hardness and metallic toughness, making them essential for high-performance applications. However, their complex multi-component nature and lengthy experimental cycles hinder rapid development. This study presents a physics-informed and explainable machine learning (ML) framework for accurate and interpretable performance prediction. A comprehensive dataset was compiled from literature (1980–2024) and in-house experiments. Dimensionality reduction was applied to extract key features while minimizing data noise. To ensure physical consistency, domain knowledge was embedded via constraints such as mass conservation, monotonic trends, and property trade-offs. Explainable artificial intelligence (XAI) tools such as SHapley Additive exPlanations (SHAP) and adopts Local Interpretable Model-Agnostic Explanations (LIME) were employed to identify globally influential features and validate local predictions. Experimental validation confirmed the framework's predictive accuracy. The proposed approach enables high-throughput, physically consistent, and interpretable modelling, offering a generalizable strategy for the intelligent design and optimization of Ti (C, N)-based cermets and other complex materials.</div></div>","PeriodicalId":18727,"journal":{"name":"Materials Characterization","volume":"229 ","pages":"Article 115584"},"PeriodicalIF":5.5,"publicationDate":"2025-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145227032","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}

{"title":"High-temperature creep properties and mechanisms of Mo-Re alloys","authors":"Zhenghui Zheng ,&nbsp;Chen Lai ,&nbsp;Guangda Wang ,&nbsp;Liran Dong ,&nbsp;Fan Zhou ,&nbsp;Ying Wang ,&nbsp;Guowei Miao ,&nbsp;Ning Xiong ,&nbsp;Jinshu Wang","doi":"10.1016/j.matchar.2025.115604","DOIUrl":"10.1016/j.matchar.2025.115604","url":null,"abstract":"<div><div>Due to their excellent high-temperature mechanical properties and good room-temperature machinability, molybdenum‑rhenium (Mo<img>Re) alloys have been widely used as high-temperature structural materials. This study investigates the creep properties of the Mo<img>Re alloys prepared by powder metallurgy with the Re contents of 5, 14, and 41 wt%. The results showed that the steady-state creep rates of Mo5Re, Mo14Re, and Mo41Re under creep conditions of 1350 K and 100 MPa were 2.21 × 10⁻⁷ /s, 1.58 × 10⁻⁷ /s, and 8.14 × 10⁻⁸ /s, respectively. It is revealed that the creep resistance increases with Re content. The changes in the proportions of the slip systems in Mo<img>Re alloys before and after creep were analyzed. The results show that the proportion of {112}〈111〉 or {123}&lt;111 &gt; slip systems rises with increasing Re content. DFT results indicate that the unstable stacking fault energy of slip systems decreases with the increase of Re content, which implies that the activation energy barrier of slip systems decreases with the increase of Re content. This result indicates that the increase of Re content promotes the activation of multiple slip systems. The activation of multiple slip systems enables the high-temperature deformation capacity of MoRe alloys to improve with increasing Re content. Grain state and dislocation morphology evolution demonstrate that increased Re content suppresses dislocation climb behavior in MoRe alloys. Additionally, in Mo41Re, a small number of Re atoms aggregate to form Re clusters. The interaction between these Re clusters and dislocations further restricts dislocation migration. These factors collectively contribute to the improvement of creep resistance in Mo<img>Re alloys with increasing Re content.</div></div>","PeriodicalId":18727,"journal":{"name":"Materials Characterization","volume":"229 ","pages":"Article 115604"},"PeriodicalIF":5.5,"publicationDate":"2025-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145227034","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}

{"title":"Microstructure evolution and properties optimization of (Sm0.75Zr0.25)(Fe0.8Co0.2)11Ti nanocrystalline magnets produced via hot-pressing sintering","authors":"L. Huang,&nbsp;Y.H. Hou,&nbsp;Z.P. Xu,&nbsp;J.P. Liu,&nbsp;X.Y. Cheng,&nbsp;W.Y. Yu,&nbsp;Y.F. Huang,&nbsp;W. Li,&nbsp;J.M. Luo,&nbsp;Y.L. Huang","doi":"10.1016/j.matchar.2025.115606","DOIUrl":"10.1016/j.matchar.2025.115606","url":null,"abstract":"<div><div>The ThMn₁₂-type SmFe₁₂-based compound exhibits remarkable intrinsic magnetic properties, making it a promising candidate for advanced magnets. However, the production of bulk magnets with superior magnetic properties remains challenging due to its thermodynamic instability. This work fabricated (Sm_0.75Zr_0.25)(Fe_0.8Co_0.2)₁₁Ti nanocrystalline magnets via hot-pressing sintering, revealing microstructure-properties relationships. Specimens sintered for 20 min achieved maximal 1:12 phase content, uniform microstructure, and high density, yielding optimal room-temperature magnetic properties: a coercivity of 4.46 kOe, a maximum magnetic energy product of 49 kJ/m³, and exceptional thermal stability. Additionally, this research shows that the presence and increased content of twinned grains hinder improved magnetic properties. These findings shed light on fabricating isotropic nanocrystalline sintered magnets and offer critical guidance for optimizing the microstructure of ThMn₁₂-type magnet.</div></div>","PeriodicalId":18727,"journal":{"name":"Materials Characterization","volume":"229 ","pages":"Article 115606"},"PeriodicalIF":5.5,"publicationDate":"2025-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145265553","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}

{"title":"Dynamic impact behavior of 2219 aluminum alloy with mixed grain structure","authors":"Qiuhui Qin ,&nbsp;Hai Wang ,&nbsp;Shengdan Liu ,&nbsp;Kezhun He ,&nbsp;Xiuxun Wei ,&nbsp;Hang Zhang ,&nbsp;Changping Tang","doi":"10.1016/j.matchar.2025.115601","DOIUrl":"10.1016/j.matchar.2025.115601","url":null,"abstract":"<div><div>Optical microscopy, electron backscatter diffraction and transmission electron microscopy were used to examine the grain structure and precipitation changes in a 2219 aluminum alloy with mixed grain structure before and after dynamic impact. The intergranular deformation coordination and strengthening mechanisms are discussed. The average Schmid factor after impact is 0.453 to 0.462, which is close to the value prior to deformation. This stability arises as grain refinement after impact enhances the intergranular deformation coordination, while retained coarse grains provide dislocation accommodation. These effects offset deformation resistance induced by strain hardening. As strain rate increases, the thickness of the precipitates first increases and then decreases, while the number density exhibits the reverse trend. Dislocation density consistently increases with strain rate; the orientation density of texture aligned with the loading direction also increases, except in the adiabatic shear band region of 7329 s⁻¹ impacted specimen, where it decreases. Both flow stress during impact and hardness after impact increase with strain rate. The strengthening mechanisms are solid solution, precipitation, dislocation, grain boundary, and texture strengthening, with precipitation and dislocation strengthening being the most significant. Precipitation strengthening contributes approximately 30 % to the yield strength, and dislocation strengthening over 45 %. Solid solution and grain boundary strengthening contribute approximately 10 % and 8.5 %, respectively. Texture strengthening has a smaller contribution that initially increases and then slightly decreases with increasing strain rate.</div></div>","PeriodicalId":18727,"journal":{"name":"Materials Characterization","volume":"229 ","pages":"Article 115601"},"PeriodicalIF":5.5,"publicationDate":"2025-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145265552","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}

{"title":"Multi-step transient liquid phase bonding of Ag-In-Sn composite solders joints for low interfacial thermal resistance and enhanced mechanical integrity","authors":"Jinhua Qin ,&nbsp;Jin Yang ,&nbsp;Zhe Huang ,&nbsp;Minggang Li ,&nbsp;Yunzhu Ma ,&nbsp;Wensheng Liu ,&nbsp;Siwei Tang","doi":"10.1016/j.matchar.2025.115599","DOIUrl":"10.1016/j.matchar.2025.115599","url":null,"abstract":"<div><div>Power semiconductor devices are placing increasingly stringent demands on the performance of packaging materials, driving the development of advanced solder technologies. In this study, Ag-In-Sn composite solder was employed using the transient liquid phase (TLP) bonding process, through which the interrelations among interfacial bonding behavior, shear strength, thermal resistance, and microstructural evolution of the bonding joints were characterized. Notably, when the In<img>Sn composite powder addition reaches 20 wt%, the joints exhibit a minimum thermal resistance of 0.9 mm²·K/W and a maximum shear strength of 30.63 MPa. The thermal resistance demonstrates a non-monotonic dependence on In<img>Sn composite powder content—first increasing, then decreasing, and rising again—governed by the competing influences of enhanced microstructural densification and the increased incorporation of low-thermal-conductivity In<img>Sn composite powder phase. Conversely, the shear strength increases initially due to improved interparticle bonding, facilitated by the infiltration of the molten In<img>Sn phase and the formation of strengthening intermetallic compounds (IMCs) such as Ag₃In and Ag₃Sn. However, beyond the densification threshold, the excessive formation of a substitutional solid solution, Ag₃(In,Sn), leads to a pronounced reduction in critical shear stress for dislocation slip. This softening effect ultimately lowers the plastic deformation threshold, resulting in a sharp decline in mechanical integrity. These findings provide fundamental insights into the microstructural design and performance optimization of low-temperature Ag-based solders for high-reliability electronic packaging applications.</div></div>","PeriodicalId":18727,"journal":{"name":"Materials Characterization","volume":"229 ","pages":"Article 115599"},"PeriodicalIF":5.5,"publicationDate":"2025-09-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145227035","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}

{"title":"Exploring nanomechanical characteristics of (CoCrFeMnNi)100-xNx high-entropy nitride ceramics: An integrated experimental and computational approach","authors":"Gang Hee Gu ,&nbsp;Sung-Gyu Heo ,&nbsp;Shin Hyun Kim ,&nbsp;Jaemin Wang ,&nbsp;Goo-Hwan Jeong ,&nbsp;Donghwa Lee ,&nbsp;Byeong-Joo Lee ,&nbsp;Wei Wei ,&nbsp;Hyoung Seop Kim","doi":"10.1016/j.matchar.2025.115597","DOIUrl":"10.1016/j.matchar.2025.115597","url":null,"abstract":"<div><div>High-entropy ceramics (HECs) have recently gained significant attention as promising coating materials for extreme environments due to their excellent mechanical and thermal properties. Despite numerous studies on HECs, there is limited research characterizing the intrinsic mechanical properties based on CoCrFeMnNi equi-atomic composition, also known as the Cantor alloy, one of the most representative high-entropy alloy (HEA) system. This gap arises because the carbon- and nitrogen-affinitive Cr elements tend to form chromium carbides or chromium nitrides, which interfere with evaluations of their intrinsic properties due to the presence of precipitates or initial cracks. In this study, we successfully synthesized crack- and precipitate-free crystalline (CoCrFeMnNi)₈₅N₁₅ and (CoCrFeMnNi)₇₀N₃₀ HECs on the micrometer-scale. Their mechanical properties were evaluated through nanohardness tests, showing higher nanohardness values compared to the CoCrFeMnNi HEA. Furthermore, density functional theory (DFT) calculations were employed to analyze how nitrogen atoms are incorporated into the CoCrFeMnNi metallic lattices and how the transformation into HECs enhances the mechanical properties. The successful fabrication strategy of crystalline CoCrFeMnNi-based HECs, analyses of their microstructures and intrinsic mechanical properties, and the exploration of their underlying mechanisms through DFT calculations, will provide innovative perspectives, spanning from fundamental knowledge to practical applications, for various HEC systems.</div></div>","PeriodicalId":18727,"journal":{"name":"Materials Characterization","volume":"229 ","pages":"Article 115597"},"PeriodicalIF":5.5,"publicationDate":"2025-09-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145227039","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}

{"title":"Precipitate evolution in the deposited metals of 9Cr2W steel with different carbon contents during the 550 °C thermal aging process","authors":"Qishan Sun ,&nbsp;Shitong Wei ,&nbsp;Shanping Lu","doi":"10.1016/j.matchar.2025.115596","DOIUrl":"10.1016/j.matchar.2025.115596","url":null,"abstract":"<div><div>Two kinds of 9Cr ferritic/martensitic (F/M) steel deposited metals with different carbon contents (0.04 wt% – 04C and 0.10 wt% - 10C) were prepared and aged at 550 °C for 500, 1000, 3000, and 10,000 h. Using scanning electron microscopy and transmission electron microscopy to characterize the evolution of the MX, M₂₃C_6, and Laves phases. The relationships between the average sizes of the precipitates and aging time were established. The results show that the MX phase is the most stable precipitate in the aging process. The 04C deposited metals have more finely dispersed MX phases, but their microstructural stability is worse than that of the 10C deposited metals. After aging for 500–1000 h, the M₂₃C₆ reaches the precipitation equilibrium approximately. Even with an aging of 10,000 h, the Laves phase does not reach the precipitation equilibrium. The segregation caused by rapid solidification in the deposited metals results in the Laves phase precipitating earlier, and M₂₃C₆ reaches precipitation equilibrium more quickly than the base metal. Thermodynamically, reducing carbon content limits the evolution of M₂₃C₆ while promoting the evolution of the Laves phase in the deposited metals. However, from the kinetic perspective, the evolution of M₂₃C₆ carbides in 04C deposited metals is faster owing to their fewer nucleation, and the evolution of the Laves phase in 10C deposited metals is faster because of the enwrapping growth mechanism. Reducing the carbon content increases the coarsening rate of M₂₃C₆ and limits the coarsening of the Laves phase. The M₂₃C₆ carbide is the most effective precipitate to pin the sub-grain boundaries. After aging at 550 °C for 10,000 h, the Laves phase still has an effective pinning effect on the deposited metals. The combined pinning effects of the M₂₃C₆ and Laves phases can effectively prevent sub-grain coarsening. During the 550 °C aging process, the higher content of M₂₃C₆ carbides with a size range of 100 nm to 200 nm in 10C deposited metals is the main reason for its superior microstructural stability compared to the 04C deposited metals.</div></div>","PeriodicalId":18727,"journal":{"name":"Materials Characterization","volume":"229 ","pages":"Article 115596"},"PeriodicalIF":5.5,"publicationDate":"2025-09-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145227033","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}

{"title":"One-step preparation by planar broad beam ion milling for quantification of microporous microstructures and comparison to cross-section polishing","authors":"Oliver Fowler,&nbsp;Joshua Voell,&nbsp;Mark Atwater","doi":"10.1016/j.matchar.2025.115595","DOIUrl":"10.1016/j.matchar.2025.115595","url":null,"abstract":"<div><div>As functional materials with microscale and nanoscale porosity gain interest, the ability to rapidly characterize that porosity is increasingly important. The challenge with such small pores is that plastic damage during sample preparation by mechanical polishing may obscure important microstructural features. Alternative methods such as focused or broad beam ion cross-section milling are relatively costly and time consuming. An alternative approach to pore quantification is proposed using planar broad beam ion milling of a free surface with no other preparation. This eliminates the time and effort of sectioning and mounting for mechanical polishing, and it reduces the cost and effort compared to cross-section milling while providing a larger area of analysis. Microporous copper produced through oxide reduction was used to determine the accuracy of the approach. Cross-section broad beam ion milling was used as the control and compared to planar milling and vibratory polishing. It was found by incremental examinations during polishing that all three methods resulted in nearly equivalent pore size and morphology. Under the conditions applied, the planar ion milling approach reached a steady pore size within approximately 40 min and vibratory polishing required approximately 300 min. Additionally, planar and cross-section broad beam ion milling provide comparable crystallographic results with vibratory polishing reporting a somewhat lower result due to the lack of signal quality compared to the ion milling techniques. Planar surface milling, then, has potential as a nondestructive method to significantly reduce time and effort in preparation for microstructural analysis of porous materials.</div></div>","PeriodicalId":18727,"journal":{"name":"Materials Characterization","volume":"229 ","pages":"Article 115595"},"PeriodicalIF":5.5,"publicationDate":"2025-09-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145226903","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}

{"title":"Effect of heat treatment on microstructure evolution mechanism of hydrogenated TC4 alloy via friction stir processing","authors":"Jie Yao ,&nbsp;Yunjing Xing ,&nbsp;Guoqing Dai ,&nbsp;Zhonggang Sun ,&nbsp;Yanhua Guo ,&nbsp;Hui Chang ,&nbsp;Yang Liu ,&nbsp;Lian Zhou ,&nbsp;Igor V. Alexandrov","doi":"10.1016/j.matchar.2025.115594","DOIUrl":"10.1016/j.matchar.2025.115594","url":null,"abstract":"<div><div>In recent years, friction stir processing (FSP) of the TC4 alloy has drawn growing attention. This is attributed to its advantages, including low cost, high efficiency, and the ability to control the microstructure and enhance mechanical properties. Nevertheless, research on Friction stir processed (FSPed) TC4 alloy still encounters several challenges. Firstly, the substantial deformation resistance during processing hinders material deformation. Secondly, the short service life of the costly W25Re alloy stirrer raise processing costs. Therefore, reducing the deformation resistance of the TC4 alloy during FSP is crucial for overcoming the application bottleneck of titanium alloys. In this study, TC4–<em>0.37wt.%H</em> alloy was fabricated and subjected to FSP. The addition of hydrogen significantly reduced the material's deformation resistance, thereby prolonging the service life of the stirring tool. However, to improve the mechanical property degradation caused by hydrogen embrittlement, post-treatments were carried out on the FSPed TC4–<em>0.37wt.%H alloy</em>. These treatments include dehydrogenation treatment (No.1), solution-dehydrogenation treatment (No.2), and solution-aging-dehydrogenation treatment (No.3). The research findings revealed that specimens containing hydrogen exhibited markedly inferior mechanical properties. After dehydrogenation treatment, the tensile strength of the No.1 specimen increased considerably, from 546.5 MPa to 1023.9 MPa. However, there was no notable improvement in elongation. Notably, the elongation of No.2 specimen reached a maximum of 10 %. Meanwhile, the tensile strength of No.3 specimen achieved the highest value of 1268.2 MPa. Additionally, the microstructural evolution mechanism of hydrogened titanium alloys was explored, providing a theoretical foundation for expanding the application of FSPed titanium alloys.</div></div>","PeriodicalId":18727,"journal":{"name":"Materials Characterization","volume":"229 ","pages":"Article 115594"},"PeriodicalIF":5.5,"publicationDate":"2025-09-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145227036","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}