Scripta Materialia最新文献_第7页

Effects of high gravity on the nucleation and precipitation of δ phase of GH4169 alloy 高重力对 GH4169 合金 δ 相成核和析出的影响

IF 5.3 2区材料科学

Scripta Materialia Pub Date : 2024-10-13 DOI: 10.1016/j.scriptamat.2024.116409

Jiahui Wang , Xinbao Zhao , Fangjie You , Quanzhao Yue , Wanshun Xia , Yuefeng Gu , Ze Zhang

引用次数: 0

Subsurface hardening of Al irradiated with ultrafast infrared laser 用超快红外激光照射铝的表层下硬化

IF 5.3 2区材料科学

Scripta Materialia Pub Date : 2024-10-09 DOI: 10.1016/j.scriptamat.2024.116404

Lucas Rousseau , Djafar Iabbaden , Xxx Sedao , Nathalie Peillon , Szilvia Kalácska , Eleanor Lawrence Bright , Guillaume Kermouche , Jean-Philippe Colombier , András Borbély

{"title":"Subsurface hardening of Al irradiated with ultrafast infrared laser","authors":"Lucas Rousseau , Djafar Iabbaden , Xxx Sedao , Nathalie Peillon , Szilvia Kalácska , Eleanor Lawrence Bright , Guillaume Kermouche , Jean-Philippe Colombier , András Borbély","doi":"10.1016/j.scriptamat.2024.116404","DOIUrl":"10.1016/j.scriptamat.2024.116404","url":null,"abstract":"<div><div>The effect of femtosecond laser shock peening on a model Al-0.3Mn alloy was investigated experimentally and numerically by molecular dynamics. Micro-diffraction experiments performed at synchrotron source revealed the depth profiles of the residual stress and the stored energy of dislocations, a measure of local plasticity. The depth of the maximum compressive stress did not coincide with that of the maximum dislocation energy, which was found at the surface. The interaction between the laser and the metal was simulated with LAMMPS using a two-temperature molecular dynamics package. The model accurately described the equation of state of aluminum and showed nearly equal resolved shear stresses on all slip systems at the wavefront. The dislocation density at a depth of 1 μm, predicted by the Meyers' model <span><span>[1]</span></span>, was higher than the experimental data, suggesting possible recovery due to the increased temperature of the sample after repeated shock loading.</div></div>","PeriodicalId":423,"journal":{"name":"Scripta Materialia","volume":"255 ","pages":"Article 116404"},"PeriodicalIF":5.3,"publicationDate":"2024-10-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142418085","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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Abnormal twin-twin interaction by {112¯2} twinning in [0001]-oriented micropillar of pure titanium at cryogenic temperature 低温下纯钛的[0001]取向微柱中{112¯2}孪晶产生的异常孪晶相互作用

IF 5.3 2区材料科学

Scripta Materialia Pub Date : 2024-10-07 DOI: 10.1016/j.scriptamat.2024.116402

Min-Su Lee , Nicolò Maria della Ventura , Amit Sharma , Chunhua Tian , Xavier Maeder , Tea-Sung Jun

{"title":"Abnormal twin-twin interaction by {112¯2} twinning in [0001]-oriented micropillar of pure titanium at cryogenic temperature","authors":"Min-Su Lee , Nicolò Maria della Ventura , Amit Sharma , Chunhua Tian , Xavier Maeder , Tea-Sung Jun","doi":"10.1016/j.scriptamat.2024.116402","DOIUrl":"10.1016/j.scriptamat.2024.116402","url":null,"abstract":"<div><div>Uniaxial compression tests were performed on [0001]-oriented micropillars of pure titanium at cryogenic temperature (<em>T</em> = 205 K). The interaction between {<span><math><mrow><mn>11</mn><mover><mn>2</mn><mo>¯</mo></mover><mn>2</mn></mrow></math></span>} twin variants activated in the micropillar was investigated by transmission Kikuchi diffraction (TKD) in scanning electron microscope (SEM) and precession electron diffraction (PED) in transmission electron microscope (TEM). Critical resolved shear stress (CRSS) for {<span><math><mrow><mn>11</mn><mover><mn>2</mn><mo>¯</mo></mover><mn>2</mn></mrow></math></span>} twinning was estimated to be 471 <span><math><mo>±</mo></math></span> 40 MPa. The sudden stress-drops were induced by twinning, and the subsequent stress-strain response was dependent on the twin-twin interaction. The interaction between nano-size twins resulted in the formation of abnormal twin-twin boundaries (TTBs), thereby suppressed the twin growth and reduced the twinning-induced stress-drop. The complicated twin structures led to the strain-hardening after the stress-drop.</div></div>","PeriodicalId":423,"journal":{"name":"Scripta Materialia","volume":"255 ","pages":"Article 116402"},"PeriodicalIF":5.3,"publicationDate":"2024-10-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142418084","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

A self-consistent void-based rationale for hydrogen embrittlement 基于自洽空隙的氢脆原理

IF 5.3 2区材料科学

Scripta Materialia Pub Date : 2024-10-04 DOI: 10.1016/j.scriptamat.2024.116403

Haiyang Yu , Jianying He , David Didier Morin , Michael Ortiz , Zhiliang Zhang

引用次数: 0

Exploring stacking fault energy with the axial Ising model: A renewed approach 用轴向伊辛模型探索堆积断层能量：一种新方法

IF 5.3 2区材料科学

Scripta Materialia Pub Date : 2024-10-02 DOI: 10.1016/j.scriptamat.2024.116400

Chunguang Tang, Matthew R. Barnett

{"title":"Exploring stacking fault energy with the axial Ising model: A renewed approach","authors":"Chunguang Tang, Matthew R. Barnett","doi":"10.1016/j.scriptamat.2024.116400","DOIUrl":"10.1016/j.scriptamat.2024.116400","url":null,"abstract":"<div><div>In this work we revisit the axial Ising model for computing intrinsic stacking fault energies (<span><math><msub><mrow><mi>γ</mi></mrow><mrow><msub><mrow></mrow><mrow><mi>I</mi><mi>S</mi><mi>F</mi></mrow></msub></mrow></msub></math></span>), which are important in alloy design. We find that the supercell approach, which directly compares the energies of <em>fcc</em> stacking with and without a fault, is a specific solution of the Ising model and is the most elegant and efficient among the solutions of the same order of accuracy. Contrary to the traditional belief that only the supercell approach can capture the effect of local chemistry, we demonstrate that local chemistry also influences <span><math><msub><mrow><mi>γ</mi></mrow><mrow><msub><mrow></mrow><mrow><mi>I</mi><mi>S</mi><mi>F</mi></mrow></msub></mrow></msub></math></span> in the axial Ising model. We also propose a new formula <span><math><msub><mrow><mi>γ</mi></mrow><mrow><msub><mrow></mrow><mrow><mi>I</mi><mi>S</mi><mi>F</mi></mrow></msub></mrow></msub><mo>=</mo><mn>5</mn><msub><mrow><mi>E</mi></mrow><mrow><mi>A</mi><mi>B</mi><mi>A</mi><mi>B</mi><mi>C</mi></mrow></msub><mo>−</mo><mn>5</mn><msub><mrow><mi>E</mi></mrow><mrow><mi>A</mi><mi>B</mi><mi>C</mi></mrow></msub></math></span>, which is similarly efficient, simpler, and more accurate compared to the widely used <span><math><msub><mrow><mi>γ</mi></mrow><mrow><msub><mrow></mrow><mrow><mi>I</mi><mi>S</mi><mi>F</mi></mrow></msub></mrow></msub><mo>=</mo><msub><mrow><mi>E</mi></mrow><mrow><mi>A</mi><mi>B</mi></mrow></msub><mo>+</mo><mn>2</mn><msub><mrow><mi>E</mi></mrow><mrow><mi>A</mi><mi>B</mi><mi>A</mi><mi>C</mi></mrow></msub><mo>−</mo><mn>3</mn><msub><mrow><mi>E</mi></mrow><mrow><mi>A</mi><mi>B</mi><mi>C</mi></mrow></msub></math></span>. We tested the new formula on pure Ni, Ni-Co alloys, and Cr-Mn-Fe-Co-Ni high entropy alloys and found satisfactory results.</div></div>","PeriodicalId":423,"journal":{"name":"Scripta Materialia","volume":"255 ","pages":"Article 116400"},"PeriodicalIF":5.3,"publicationDate":"2024-10-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142418159","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Advancing refractory high entropy alloy development with AI-predictive models for high temperature oxidation resistance 利用抗高温氧化人工智能预测模型推进难熔高熵合金开发

IF 5.3 2区材料科学

Scripta Materialia Pub Date : 2024-10-01 DOI: 10.1016/j.scriptamat.2024.116394

Stéphane Gorsse , Wei-Chih Lin , Hideyuki Murakami , Gian-Marco Rignanese , An-Chou Yeh

{"title":"Advancing refractory high entropy alloy development with AI-predictive models for high temperature oxidation resistance","authors":"Stéphane Gorsse , Wei-Chih Lin , Hideyuki Murakami , Gian-Marco Rignanese , An-Chou Yeh","doi":"10.1016/j.scriptamat.2024.116394","DOIUrl":"10.1016/j.scriptamat.2024.116394","url":null,"abstract":"<div><div>Refractory high-entropy alloys (RHEAs) and complex concentrated alloys (RCCAs) are vital for high-temperature applications beyond the capabilities of Ni-based superalloys. Traditional methods for predicting oxidation resistance in these alloys are often inaccurate and resource-intensive. This study introduces a novel approach using Gradient Boosted Decision Trees (GBDT), an artificial intelligence technique, to predict specific mass gain due to oxidation. Utilizing a dataset synthesized from extensive literature and characterized by diverse alloy compositions and oxidation conditions, the model was trained using Iterated Nested k-fold Cross Validation with Shuffling (INKCVS). Our findings demonstrate that the GBDT model achieves a good balance between accuracy and generalization capacity in predicting oxidation resistance, as validated experimentally with selected alloys. This approach not only enhances prediction accuracy but also significantly reduces the need for extensive experimental testing, facilitating rapid development of new high-performance materials.</div></div>","PeriodicalId":423,"journal":{"name":"Scripta Materialia","volume":"255 ","pages":"Article 116394"},"PeriodicalIF":5.3,"publicationDate":"2024-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142418087","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Stress increase by nanoscale hcp precipitates in HfNbTaTiZr high entropy alloys HfNbTaTiZr 高熵合金中的纳米级 hcp 沉淀增加应力

IF 5.3 2区材料科学

Scripta Materialia Pub Date : 2024-10-01 DOI: 10.1016/j.scriptamat.2024.116401

Hiroyuki Y. Yasuda , Yusuke Yamada , Masato Onishi , Hiroki Suzuki , Ken Cho , Satoshi Ichikawa , Takeshi Nagase

引用次数: 0

Blue to UV upconversion properties of Pr3+ doped ACaF3 (A = K, Rb, Cs) phosphors 掺杂 Pr3+ 的 ACaF3（A = K、Rb、Cs）荧光粉的蓝紫外上转换特性

IF 5.3 2区材料科学

Scripta Materialia Pub Date : 2024-09-30 DOI: 10.1016/j.scriptamat.2024.116395

Nadiia Rebrova , Alexander Grippa , Patrycja Zdeb , Przemysław J. Dereń

引用次数: 0

Promoting the ordering of L10-FeNi phase via chemical interactions with substrate: A molecular dynamics simulation study 通过与基底的化学作用促进 L10-FeNi 相的有序化：分子动力学模拟研究

IF 5.3 2区材料科学

Scripta Materialia Pub Date : 2024-09-28 DOI: 10.1016/j.scriptamat.2024.116398

Masayuki Okugawa , Dmitri V. Louzguine-Luzgin , Yuichiro Koizumi , Takeshi Nakanishi

引用次数: 0

Effect of A-site non-stoichiometry in NaNbO3 ceramics NaNbO3 陶瓷中 A 位非化学计量的影响

IF 5.3 2区材料科学

Scripta Materialia Pub Date : 2024-09-28 DOI: 10.1016/j.scriptamat.2024.116384

Ali Hussain , Ahmed Gadelmawla , Juliana G. Maier , Gina E. Eyoum , Hidetoshi Miyazaki , Koji Kimura , Koichi Hayashi , Kyle G. Webber

{"title":"Effect of A-site non-stoichiometry in NaNbO3 ceramics","authors":"Ali Hussain , Ahmed Gadelmawla , Juliana G. Maier , Gina E. Eyoum , Hidetoshi Miyazaki , Koji Kimura , Koichi Hayashi , Kyle G. Webber","doi":"10.1016/j.scriptamat.2024.116384","DOIUrl":"10.1016/j.scriptamat.2024.116384","url":null,"abstract":"<div><div>NaNbO<sub>3</sub> (NN) is a potentially promising material for energy storage and conversion. Understanding the structure-property relationships of NN is crucial for its precise development and implementation in various devices. This work reports the effect of Na non-stoichiometry on structure and ferroelectric properties of polycrystalline NN ceramics. Slight deviations of Na content in NN were observed to create large variations in microstructure, such as grain morphology and reduction in grain size. An insignificant phase change is observed in x-ray diffraction analysis; however, the pair distribution function (PDF) results show a nonuniform atomic displacement which are not directly observed by standard crystallographic techniques. A small amount of Na excess (2 mol.%) in NN enhanced the dielectric constant, polarization, and strain response, whereas a deficiency of same amount degrades electromechanical performance. This work not only explores Na non-stoichiometric effect in NN, but also provides a pathway for development of high performance NN-based ceramics.</div></div>","PeriodicalId":423,"journal":{"name":"Scripta Materialia","volume":"255 ","pages":"Article 116384"},"PeriodicalIF":5.3,"publicationDate":"2024-09-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142358651","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