Scripta Materialia最新文献_第7页

A first principles approach for determining solute effect on electrical resistivity of Aluminum solid solution 确定溶质对铝固溶体电阻率影响的第一性原理方法

IF 5.6 2区材料科学

Scripta Materialia Pub Date : 2026-03-15 Epub Date: 2025-12-12 DOI: 10.1016/j.scriptamat.2025.117138

German Samolyuk, Amit Shyam, Mina Yoon

{"title":"A first principles approach for determining solute effect on electrical resistivity of Aluminum solid solution","authors":"German Samolyuk, Amit Shyam, Mina Yoon","doi":"10.1016/j.scriptamat.2025.117138","DOIUrl":"10.1016/j.scriptamat.2025.117138","url":null,"abstract":"<div><div>There are no general approaches for predicting the effect of solutes on electrical resistivity changes in aluminum (Al) solid solutions. Here, we introduce a first principles-based approach for predicting temperature-dependent electrical resistivity of Al solid solutions. A combination of electronic structure methods was applied to calculate electronic scattering effects on chemical disorder and temperature induced atomic vibrations or phonons. Our calculations are validated by contrasting experimental resistivity measurements for two elements in Al solid solution: at 0.3 at. % concentration, Sn (an <em>sp-</em>valence solute) increases the residual resistivity by 0.2 <span><math><mrow><mi>μ</mi><mstyle><mi>Ω</mi></mstyle><mo>·</mo><mi>m</mi></mrow></math></span>, whereas Zr (a d-valence solute) causes a 2.5 <span><math><mrow><mi>μ</mi><mstyle><mi>Ω</mi></mstyle><mo>·</mo><mi>m</mi></mrow></math></span> increase. This trend may deviate for solute elements in Al that form semiconductors in pure state, like Si. Our findings provide an understanding of the role of valence electron character of solute atoms in determining electrical resistivity of Al alloys.</div></div>","PeriodicalId":423,"journal":{"name":"Scripta Materialia","volume":"274 ","pages":"Article 117138"},"PeriodicalIF":5.6,"publicationDate":"2026-03-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145735021","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

An alternative in-grain misorientation axes analysis for slip activity: A case study in a magnesium alloy 滑移活动的可选晶内取向轴分析：镁合金的案例研究

IF 5.6 2区材料科学

Scripta Materialia Pub Date : 2026-03-15 Epub Date: 2025-12-02 DOI: 10.1016/j.scriptamat.2025.117119

Jing Yang , Kunyu Xiao , Dexin Zhao , Yanfei Wang , Chongxiang Huang , Xiaolong Ma

{"title":"An alternative in-grain misorientation axes analysis for slip activity: A case study in a magnesium alloy","authors":"Jing Yang , Kunyu Xiao , Dexin Zhao , Yanfei Wang , Chongxiang Huang , Xiaolong Ma","doi":"10.1016/j.scriptamat.2025.117119","DOIUrl":"10.1016/j.scriptamat.2025.117119","url":null,"abstract":"<div><div>Electron backscatter diffraction (EBSD)-based in-grain misorientation axes (IGMA) analysis is widely employed to elucidate dislocation slip activity in deformed materials. This work introduces an alternative, long-range IGMA method using non-consecutive pairs, in contrast to the conventional short-range method using consecutive pairs. By expanding the evaluation distance between two pixels to allow for the presence of more grain-scale stochastically stored dislocations (SSDs) of opposite sign and their mutual cancellation, the long-range method enhances the detection of grain-scale geometrically necessary dislocations (GNDs) that are essential for maintaining grain continuity upon deformation but may be overlooked by the short-range IGMA method. We validate this approach on a highly textured Mg-3Al-1 Zn (AZ31) alloy compressed along two directions and identified different slip systems accounting for grain-scale lattice curvature of each case. The work underscores the complementary value of integrating spatially and angularly separated non-consecutive pairs into IGMA analyses for deformation of polycrystals.</div></div>","PeriodicalId":423,"journal":{"name":"Scripta Materialia","volume":"274 ","pages":"Article 117119"},"PeriodicalIF":5.6,"publicationDate":"2026-03-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145652004","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

Overcoming the intermediate-temperature embrittlement of high-strength Ni-Co-base wrought superalloy via C addition 添加C克服高强度ni - co基变形高温合金的中温脆

IF 5.6 2区材料科学

Scripta Materialia Pub Date : 2026-03-15 Epub Date: 2025-12-20 DOI: 10.1016/j.scriptamat.2025.117148

Yao Zhang , Yancheng Li , Jinlin Li , Qing Wang , Jingyu Pang , Hongwei Zhang , Lei Shi , Liming Lei , Peter K. Liaw

{"title":"Overcoming the intermediate-temperature embrittlement of high-strength Ni-Co-base wrought superalloy via C addition","authors":"Yao Zhang , Yancheng Li , Jinlin Li , Qing Wang , Jingyu Pang , Hongwei Zhang , Lei Shi , Liming Lei , Peter K. Liaw","doi":"10.1016/j.scriptamat.2025.117148","DOIUrl":"10.1016/j.scriptamat.2025.117148","url":null,"abstract":"<div><div>A novel high-strength Ni-Co-base wrought superalloy (Ni-38Co-2.7Al-3.3Ti-0.5Nb-0.9Ta-8.3Cr-2.9Mo-5.5W-0.02B-0.03Zr-0.08C, wt.%) with a high volume fraction (∼ 50%) of γ' nanoprecipitates was developed for suppressing intermediate-temperature embrittlement (ITE). The coherent γ/γ' microstructure shows an exceptional thermal stability at 1123 K. The 0.08 wt.% C addition enhances the elongation from < 1 % (in C-free superalloy) to 3.5 ∼ 9 % at ITs (973 ∼ 1073 K) through the formation of MC carbides at grain boundaries, while achieving high yield strength (860 ∼ 890 MPa). Moreover, this superalloy exhibits prominent creep resistance with the rupture lifetime of 129 h under 1073 K / 300 MPa, which is primarily governed by dislocation hindrance from stacking faults (SFs) and antiphase boundaries. It also possesses an excellent strain-hardening capacity at room-temperature due to the presence of abundant SFs and Lomer-Cottrell locks. This work proposes a novel strategy to overcome the ITE in high-strength superalloys for high-temperature applications.</div></div>","PeriodicalId":423,"journal":{"name":"Scripta Materialia","volume":"274 ","pages":"Article 117148"},"PeriodicalIF":5.6,"publicationDate":"2026-03-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145836952","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

FCC stacking fault energies from diffraction depend on orientation 衍射所得的FCC层错能与取向有关

IF 5.6 2区材料科学

Scripta Materialia Pub Date : 2026-03-15 Epub Date: 2025-12-05 DOI: 10.1016/j.scriptamat.2025.117120

Runguang Li, Ziyu Ma, Jun Wang, Hossein Beladi, Matthew R. Barnett

{"title":"FCC stacking fault energies from diffraction depend on orientation","authors":"Runguang Li, Ziyu Ma, Jun Wang, Hossein Beladi, Matthew R. Barnett","doi":"10.1016/j.scriptamat.2025.117120","DOIUrl":"10.1016/j.scriptamat.2025.117120","url":null,"abstract":"<div><div>Stacking fault energy (SFE) critically affects twinning and martensitic transformation in FCC metals. As an intrinsic parameter, it is expected to remain constant under various testing conditions at the same temperature. The widely used Reed-Schramm method estimates SFE from stacking fault probability (SFP) and root mean square (rms) microstrain in deformed metals. In this study, synchrotron high-energy X-ray diffraction was used to evaluate the SFP and rms microstrain in a tensile-deformed TWIP steel. The SFP showed a strong correlation with grain orientation, whereas rms microstrain was relatively orientation-insensitive. These parameters yielded orientation-sensitive measured SFE (mSFE) values ranging from 4 to 30 mJ/m², correlating with the developed [111]//LD (low mSFE) and [100]//LD (high mSFE) texture components. Transmission electron microscopy further revealed microstructural differences, with dense, highly extended stacking faults in [111]//LD grains but few in [100]//LD grains. These findings highlight the limitations of diffraction-based experimental strategies in determining the SFE.</div></div>","PeriodicalId":423,"journal":{"name":"Scripta Materialia","volume":"274 ","pages":"Article 117120"},"PeriodicalIF":5.6,"publicationDate":"2026-03-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145683453","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

Rapid tempering to enhance dynamic performance of high and ultra-high strength steels 快速回火以提高高强度和超高强度钢的动态性能

IF 5.6 2区材料科学

Scripta Materialia Pub Date : 2026-03-15 Epub Date: 2025-12-05 DOI: 10.1016/j.scriptamat.2025.117116

Lawrence Cho , Emily Pittman , Leslie Lamberson , Alec Williamson , David Ulrich , Garrison Hommer , Daniel M. Field , Krista R. Limmer , Kip O. Findley , John G. Speer

{"title":"Rapid tempering to enhance dynamic performance of high and ultra-high strength steels","authors":"Lawrence Cho , Emily Pittman , Leslie Lamberson , Alec Williamson , David Ulrich , Garrison Hommer , Daniel M. Field , Krista R. Limmer , Kip O. Findley , John G. Speer","doi":"10.1016/j.scriptamat.2025.117116","DOIUrl":"10.1016/j.scriptamat.2025.117116","url":null,"abstract":"<div><div>This study employed rapid, short-time duration (1 s) tempering to improve the dynamic performance of high-strength steel (HSS) and ultra-high-strength steel (UHSS), compared to quenched and conventionally (1800 s) tempered microstructures. Rapid tempering significantly improved the Charpy toughness of both steels compared to the conventionally tempered condition at an equivalent tempering parameter (TP) or hardness level. For conventionally tempered conditions, tempered martensite embrittlement was observed within the tempering temperature range of 200–400 °C, whereas rapid tempering exhibited increased Charpy toughness with increasing tempering temperature across all tempering conditions. Dynamic compression experiments indicated that rapid tempering led to improved ductility compared to the conventionally tempered condition at an equivalent TP. This work shows that the same rapid tempering strategy used for HSS is directly transferable to a higher-carbon UHSS and provides the first systematic evidence of improved strength-ductility combinations and cracking resistance under dynamic compression, supported by Kolsky bar experiments.</div></div>","PeriodicalId":423,"journal":{"name":"Scripta Materialia","volume":"274 ","pages":"Article 117116"},"PeriodicalIF":5.6,"publicationDate":"2026-03-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145683452","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

Corrigendum to “Response to the comments on “Practicing pseudo-binary diffusion couple method in ternary and multicomponent systems” [Scripta Materialia 273 (2026) 117090] 对“在三元和多组分系统中实践伪二元扩散偶法”的评论的答复[Scripta Materialia 273(2026) 117090]的更正

IF 5.6 2区材料科学

Scripta Materialia Pub Date : 2026-03-15 Epub Date: 2025-12-24 DOI: 10.1016/j.scriptamat.2025.117147

Suman Sadhu , Anuj Dash , Neelamegan Esakkiraja , Ujjval Bansal , Raju Ravi , Saswata Bhattacharyya , Sergiy Divinski , Aloke Paul

引用次数: 0

Predictive method for rotating bending fatigue performance of carburized steel considering layer gradients and inclusions 考虑层梯度和夹杂物的渗碳钢旋转弯曲疲劳性能预测方法

IF 5.6 2区材料科学

Scripta Materialia Pub Date : 2026-03-15 Epub Date: 2025-12-29 DOI: 10.1016/j.scriptamat.2025.117156

Hanlin Che , Hailong Xu , Xu Xu , Zhigang Yang , Hao Chen , Chi Zhang , Jugan Zhang

引用次数: 0

Direct evidence of TiC nanoparticle-induced nucleation in laser powder bed fused AlSi10Mg 激光熔合AlSi10Mg粉末床中TiC纳米颗粒诱导成核的直接证据

IF 5.6 2区材料科学

Scripta Materialia Pub Date : 2026-03-15 Epub Date: 2025-12-17 DOI: 10.1016/j.scriptamat.2025.117143

Felix N Lomo , Duyao Zhang , Dong Qiu , Ihsan Murat Kuşoğlu , Anna R Ziefuss , Stephan Barcikowski , Matthew R. Field , Mark A Easton

{"title":"Direct evidence of TiC nanoparticle-induced nucleation in laser powder bed fused AlSi10Mg","authors":"Felix N Lomo , Duyao Zhang , Dong Qiu , Ihsan Murat Kuşoğlu , Anna R Ziefuss , Stephan Barcikowski , Matthew R. Field , Mark A Easton","doi":"10.1016/j.scriptamat.2025.117143","DOIUrl":"10.1016/j.scriptamat.2025.117143","url":null,"abstract":"<div><div>Grain refinement in AlSi10Mg fabricated by laser powder bed fusion was investigated via nano-TiC addition. Electron backscatter diffraction and scanning electron microscope analyses reveal that a 0.6 wt% nano-TiC addition reduces the average grain size by ∼71 %, promoting predominantly equiaxed morphologies while suppressing columnar growth. Transmission Kikuchi diffraction and energy dispersive X-ray spectroscopy analyses show that TiC nanoparticle clusters are commonly situated at grain centres, suggesting a potential cluster-mediated mechanism, whereas nucleation is linked to individual TiC particles that exhibit favourable orientation relationships with the Al matrix. Two plausible mechanisms—single-particle activation within clusters and cluster-mediated nucleation—likely operate concurrently, with particle pushing–engulfment dynamics explaining redistribution of TiC nanoparticles to interdendritic boundaries. These findings highlight the interplay of nanoparticle size, crystallography, and local solidification conditions in driving robust grain refinement under additive manufacturing.</div></div>","PeriodicalId":423,"journal":{"name":"Scripta Materialia","volume":"274 ","pages":"Article 117143"},"PeriodicalIF":5.6,"publicationDate":"2026-03-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145787807","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

Vacancy defects drive efficient interfacial thermal transport of diamond/MoS2 heterostructure 空位缺陷驱动了金刚石/二硫化钼异质结构的高效界面热传递

IF 5.6 2区材料科学

Scripta Materialia Pub Date : 2026-03-15 Epub Date: 2025-12-30 DOI: 10.1016/j.scriptamat.2025.117155

Yong Chen , Haiying Yang , Jinfa Ma , Ping Yang

引用次数: 0

A novel plate-shaped M6C carbide with a twin orientation relationship to the matrix in a Ni-W-Cr superalloy Ni-W-Cr高温合金中与基体呈双取向关系的新型板状M6C碳化物

IF 5.6 2区材料科学

Scripta Materialia Pub Date : 2026-03-15 Epub Date: 2026-01-02 DOI: 10.1016/j.scriptamat.2025.117158

Meiqian Huang , Zijian Zhou , Shuhua Tian , Chen Wang , Xinguang Wang , Xiang-Xi Ye , Rui Zhang , Weihong Zhang , Xipeng Tao , Yizhou Zhou , Xiaofeng Sun , Chuanyong Cui

{"title":"A novel plate-shaped M6C carbide with a twin orientation relationship to the matrix in a Ni-W-Cr superalloy","authors":"Meiqian Huang , Zijian Zhou , Shuhua Tian , Chen Wang , Xinguang Wang , Xiang-Xi Ye , Rui Zhang , Weihong Zhang , Xipeng Tao , Yizhou Zhou , Xiaofeng Sun , Chuanyong Cui","doi":"10.1016/j.scriptamat.2025.117158","DOIUrl":"10.1016/j.scriptamat.2025.117158","url":null,"abstract":"<div><div>The crystallographic orientation relationship (OR) between the distinctive plate-shaped M<sub>6</sub>C carbide and the γ matrix in a Ni-W-Cr superalloy designed for thorium-based molten salt reactors (TMSRs) was investigated. Multi-scale characterization indicates that these carbides, in contrast to conventional granular M<sub>6</sub>C, display a plate-shaped morphology and a novel twin OR with the γ matrix: [111]<sub>M6C</sub>//[111]<sub>γ</sub>, [<span><math><mover><mn>1</mn><mo>¯</mo></mover></math></span>01]<sub>M6C</sub>//[0<span><math><mover><mn>1</mn><mo>¯</mo></mover></math></span>1]<sub>γ</sub> and [<span><math><mover><mn>2</mn><mo>¯</mo></mover></math></span>11]<sub>M6C</sub>//[<span><math><mrow><mover><mn>1</mn><mo>¯</mo></mover><mover><mn>1</mn><mo>¯</mo></mover></mrow></math></span>2]<sub>γ</sub>. This OR forms low-energy semi-coherent interfaces on {111}<sub>γ</sub> habit planes, effectively reducing the nucleation barrier. This study clarifies the precipitation mechanism of plate-shaped M<sub>6</sub>C and offers insights for microstructural optimization in refractory-rich superalloys.</div></div>","PeriodicalId":423,"journal":{"name":"Scripta Materialia","volume":"274 ","pages":"Article 117158"},"PeriodicalIF":5.6,"publicationDate":"2026-03-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145881020","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