MATERIALS & DESIGN最新文献_第2页

Influence of the deposition process and substrate on microstructure, phase composition, and residual stress state on as-deposited Cr-Al-C coatings 沉积工艺和基体对沉积Cr-Al-C涂层显微组织、相组成和残余应力状态的影响

MATERIALS & DESIGN Pub Date : 2023-01-01 DOI: 10.1016/j.matdes.2022.111535

Stefan Heinze, Tim Krülle, Lars Ewenz, Christina Krywka, Anton Davydok, Andreas Stark, Rainer Cremer, Christoph Leyens

{"title":"Influence of the deposition process and substrate on microstructure, phase composition, and residual stress state on as-deposited Cr-Al-C coatings","authors":"Stefan Heinze, Tim Krülle, Lars Ewenz, Christina Krywka, Anton Davydok, Andreas Stark, Rainer Cremer, Christoph Leyens","doi":"10.1016/j.matdes.2022.111535","DOIUrl":"https://doi.org/10.1016/j.matdes.2022.111535","url":null,"abstract":"This paper focuses on the influence of the High Power Pulsed Magnetron Sputtering (HPPMS) and Direct Current Magnetron Sputtering (DCMS) coating deposition processes, the bias voltage, deposition temperature, and substrate on various properties of the as-deposited state of Cr-Al-C thin films. Three substrates with different coefficients of thermal expansion and electrical conductivity were used. To investigate the microstructure, phase composition, residual stress state, and mechanical properties, ex-situ and in situ synchrotron experiments were conducted accompanied by electron microscopy and nanoindentation. As-deposited Cr-Al-C coatings consisted of amorphous and crystalline areas, with the ratio highly dependent on the deposition process and substrate. The crystalline phase was identified as metastable (Cr,Al)2C. The highest crystallinity was determined for DCMS coatings. Increasing temperature and decreasing bias voltage increased coating crystallinity for HPPMS coatings. The influence of the deposition process and bias voltage was highly reduced for the substrate with low electrical conductivity. In-situ investigations of the stress state of amorphous areas revealed, that those were acting as a residual stress buffer. The hardness and Young’s modulus of the coatings were found to increase with crystallinity and were slightly increased for crystalline HPPMS coatings compared to DCMS coatings.","PeriodicalId":101318,"journal":{"name":"MATERIALS & DESIGN","volume":"216 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135076323","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

Higher wear-resistant surfacing at high temperatures using a hybrid cladding process 在高温下使用混合熔覆工艺进行更高的耐磨表面处理

MATERIALS & DESIGN Pub Date : 2023-01-01 DOI: 10.1016/j.matdes.2022.111553

Yeong-Kwan Jo, Dan-Bi Song, Jung-Su Choi, Jeong Suh, Parviz Kahhal, Sang-Hu Park

引用次数: 2

Revisiting heat treatments for additive manufactured parts: A case study of A20X alloy 再论增材制造零件的热处理:以A20X合金为例

MATERIALS & DESIGN Pub Date : 2023-01-01 DOI: 10.1016/j.matdes.2022.111566

Jayant Barode, Ashok Vayyala, Enrico Virgillito, Alberta Aversa, Joachim Mayer, Paolo Fino, Mariangela Lombardi

{"title":"Revisiting heat treatments for additive manufactured parts: A case study of A20X alloy","authors":"Jayant Barode, Ashok Vayyala, Enrico Virgillito, Alberta Aversa, Joachim Mayer, Paolo Fino, Mariangela Lombardi","doi":"10.1016/j.matdes.2022.111566","DOIUrl":"https://doi.org/10.1016/j.matdes.2022.111566","url":null,"abstract":"A20X (Al-Cu-Ag-Mg-TiB2) is a precipitation hardening alloy, recently developed for additive manufacturing processing. Printed parts of A20X alloy are usually post-processed with a long T7 heat treatment for improved mechanical properties with respect to its as-built counterparts. However, in the present investigation, it was demonstrated that T7 might not be the best suitable heat treatment available for A20X alloy. A detailed microstructural characterization of A20X samples processed with laser powder bed fusion and post-processed with T7 was carried out. Microstructural features were analysed in terms of grain size, precipitate size, phase quantification, dislocation density and width of the precipitate free zones. After the analysis, a simple and rapid heat treatment was proposed which significantly improved the mechanical properties. The yield strength (YS), ultimate tensile strength (UTS) and elongation to fracture (e) for the T7 heat treatment were 370 ± 9 MPa, 435 ± 13 MPa and 7.3 ± 0.3 % respectively. With the proposed heat treatment, an increment of 7.1 % in YS, 6.3 % in UTS and 45 % in e was witnessed. This exceptional improvement in the mechanical behaviour has been associated with the absence of grain boundary cracking in the proposed heat treatment.","PeriodicalId":101318,"journal":{"name":"MATERIALS & DESIGN","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136092270","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 4

A comparative study on microstructure and tribological characteristics of Mo2FeB2/WC self-lubricating composite coatings with addition of WS2, MoS2, and h-BN 添加WS2、MoS2和h-BN的Mo2FeB2/WC自润滑复合涂层的微观结构和摩擦学特性比较研究

MATERIALS & DESIGN Pub Date : 2023-01-01 DOI: 10.1016/j.matdes.2022.111581

Hao Zhang, Yingjun Pan, Yang Zhang, Guofu Lian, Qiang Cao, Linzhi Que

{"title":"A comparative study on microstructure and tribological characteristics of Mo2FeB2/WC self-lubricating composite coatings with addition of WS2, MoS2, and h-BN","authors":"Hao Zhang, Yingjun Pan, Yang Zhang, Guofu Lian, Qiang Cao, Linzhi Que","doi":"10.1016/j.matdes.2022.111581","DOIUrl":"https://doi.org/10.1016/j.matdes.2022.111581","url":null,"abstract":"To enhance the tribological properties and service life of Mo2FeB2/WC coatings, self-lubricating composite coatings with addition of WS2, MoS2, and h-BN were fabricated using laser cladding. The morphology, microstructure, microhardness, and tribological properties of the Mo2FeB2/WC self-lubricating composite coatings were investigated. The results indicated that the addition of WS2, MoS2, and h-BN increased the bonding properties between the coating and substrate. Sulfides and nitrides were found in the self-lubricating composite coatings; the Mo2FeB2/WC/h-BN coating exhibited a fine dendritic structure. The microhardnesses of the Mo2FeB2/WC, Mo2FeB2/WC/WS2, Mo2FeB2/WC/MoS2, and Mo2FeB2/WC/h-BN coatings were 1591.3 HV0.5, 1345.6 HV0.5, 1378.9 HV0.5, and 1415.3 HV0.5, respectively. After the addition of WS2, MoS2, and h-BN, the coefficients of friction decreased by 9.09%, 15.15%, and 30.30%, respectively; the corresponding wear rates decreased by 10.80%, 19.03%, and 30.97%, respectively. The self-lubricating phases significantly improved the tribological properties of the Mo2FeB2/WC coating. The main wear mechanisms of the Mo2FeB2/WC coating were adhesive and mild oxidative wear; the wear mechanisms after the addition of WS2, MoS2, and h-BN were abrasive and oxidative wear. The wear debris was powder-like for the Mo2FeB2/WC/WS2 and Mo2FeB2/WC/MoS2 coatings and flake-like for the Mo2FeB2/WC/h-BN coating. The lubricating transfer film caused an improvement in the tribological properties.","PeriodicalId":101318,"journal":{"name":"MATERIALS & DESIGN","volume":"29 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135076336","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

A pine needle-like superhydrophobic Zn/ZnO coating with excellent mechanochemical robustness and corrosion resistance 一种松针状超疏水锌/ZnO涂层，具有优异的机械化学坚固性和耐腐蚀性

MATERIALS & DESIGN Pub Date : 2023-01-01 DOI: 10.1016/j.matdes.2022.111583

Ruiqian Li, Mengqing Li, Xin Wu, Huizhu Yu, Rencheng Jin, Jun Liang

{"title":"A pine needle-like superhydrophobic Zn/ZnO coating with excellent mechanochemical robustness and corrosion resistance","authors":"Ruiqian Li, Mengqing Li, Xin Wu, Huizhu Yu, Rencheng Jin, Jun Liang","doi":"10.1016/j.matdes.2022.111583","DOIUrl":"https://doi.org/10.1016/j.matdes.2022.111583","url":null,"abstract":"The superhydrophobic Zn-based coating with hierarchical structure has good prospects in metal anticorrosion. However, the practical application of superhydrophobic coating is still limited by the poor mechanical stability of micro/nano hierarchical structure. Herein, a robust superhydrophobic Zn/ZnO coating with pine needle-like structure and superior corrosion resistance was design and constructed. The micro-scale polyhedral Zn was fabricated on steel followed by the deposition of radially aligned ZnO nanorods, forming a novel pine needle-like hierarchical structure, which was finally modified by stearic acid. Notably, the pine needle-like structured Zn/ZnO (Zn/ZnO-3) coating exhibits excellent superhydrophobicity with contact angle of 166.8 ± 1.4° and sliding angle of 2.6 ± 0.5°. What's more, Zn/ZnO-3 coating maintains superhydrophobicity after suffering from strong acid/alkali, tape peeling, water drop impact and sandpaper abrasion tests. Compared with carbon steel and hydrophobic Zn coating, the corrosion current density of superhydrophobic Zn/ZnO-3 coating is decreased by approximately 4 and 3 orders of magnitude, respectively. The superior mechanochemical stability and anti-corrosion performance of superhydrophobic Zn/ZnO-3 coating is ascribed to its pine needle-like structure. Overall, this work provides a novel strategy to design hierarchical structured superhydrophobic surfaces with excellent mechanochemical stability and corrosion resistance, holding great prospects in metallic corrosion protection.","PeriodicalId":101318,"journal":{"name":"MATERIALS & DESIGN","volume":"18 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135913080","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 8

In situ growing fusiform SnO2 nanocrystals film on carbon fiber cloth as an efficient and flexible microwave absorber 在碳纤维布上原位生长梭形SnO2纳米晶体薄膜，作为一种高效、柔性的微波吸收剂

MATERIALS & DESIGN Pub Date : 2023-01-01 DOI: 10.1016/j.matdes.2022.111576

Shikun Hou, Ying Wang, Feng Gao, Fengyuan Wang, Hua Yang, Fei Jin, Gongxun Bai, Zhihai Cao, Yunchen Du

{"title":"In situ growing fusiform SnO2 nanocrystals film on carbon fiber cloth as an efficient and flexible microwave absorber","authors":"Shikun Hou, Ying Wang, Feng Gao, Fengyuan Wang, Hua Yang, Fei Jin, Gongxun Bai, Zhihai Cao, Yunchen Du","doi":"10.1016/j.matdes.2022.111576","DOIUrl":"https://doi.org/10.1016/j.matdes.2022.111576","url":null,"abstract":"Developing highly efficient flexible microwave absorber is of great significance for wearable electronics and aerospace applications. In this work, the fusiform SnO2 nanocrystals film in situ grown on flexible carbon fiber cloth is rationally designed and fabricated through combining air calcination and hydrothermal synthesis. X-ray photoelectron spectrum confirms fusiform SnO2 nanocrystals film and carbon fiber cloth are effectively integrated with strong chemical bonds of COSn. The as-prepared composite exhibits strong reflection loss of −49.1 dB (2.6 GHz) and wide effective absorption bandwidth of 5.8 GHz (11.6–17.4 GHz) with a thin matched thickness of 1.6 mm, surpassing to pure carbon fiber cloth and many SnO2/carbon-based microwave absorbers. The efficient performance originates from well-matched characteristic impedance and multifarious electromagnetic attenuation mechanisms, i.g., dipole orientation polarization, interfacial polarization relaxation, conductive loss, and multiple reflections/scatterings. Especially, differential charge density calculation reveals the uneven charge distribution at SnO2/C interface, which is believed to remarkably enhance interfacial polarization relaxation and contribute to microwave absorption. Our results illustrate that the ingenious integration of nanomaterials on carbon fiber cloth promises a way to achieve efficient and flexible microwave absorbers.","PeriodicalId":101318,"journal":{"name":"MATERIALS & DESIGN","volume":"86 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135959745","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 6

Axial tension/compression and torsional loading of diamond and gyroid lattice structures for biomedical implants: Simulation and experiment 用于生物医学植入物的金刚石和陀螺晶格结构的轴向拉伸/压缩和扭转载荷:模拟和实验

MATERIALS & DESIGN Pub Date : 2023-01-01 DOI: 10.1016/j.matdes.2022.111585

Anatolie Timercan, Patrick Terriault, Vladimir Brailovski

{"title":"Axial tension/compression and torsional loading of diamond and gyroid lattice structures for biomedical implants: Simulation and experiment","authors":"Anatolie Timercan, Patrick Terriault, Vladimir Brailovski","doi":"10.1016/j.matdes.2022.111585","DOIUrl":"https://doi.org/10.1016/j.matdes.2022.111585","url":null,"abstract":"Lattice structures are increasingly used in biomedical implants, notably intervertebral cages, requiring a better understanding of their behavior for the different types of loading they undergo during application. Strut-based diamond and sheet-based gyroid structures with porosity levels ranging from 50 to 80 % and an identical pore size of 750 μm were manufactured from Ti6Al4V alloy, tested experimentally and simulated numerically in axial tension/compression and in torsion to simulate flexion/extension, compression and rotation of the human spine. The manufactured structures were within 5 % of the targeted porosity. However, numerical simulations overestimated the experimental apparent (effective) stiffness and strength of the structures by an average of 25 %, likely due to the presence in them of manufacturing defects, especially in the higher porosity lattices. Experimental and numerical results showed that the structures have quasi-identical mechanical properties in compression and in tension. However, a comparison of the torsion and axial results indicated that conventional bulk material failure theories such as the von Mises limitation criterion do not apply to the apparent properties of lattice structures. Studied lattices exhibited adequate resistance for use in intervertebral cages, however their stiffness was greater than those of the vertebrae, while situated in the stiffness range of cortical bone.","PeriodicalId":101318,"journal":{"name":"MATERIALS & DESIGN","volume":"230 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135076332","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

In vitro degradation behavior of novel Zn–Cu–Li alloys: Roles of alloy composition and rolling processing 新型Zn-Cu-Li合金的体外降解行为:合金成分和轧制工艺的作用

IF 8.4

MATERIALS & DESIGN Pub Date : 2021-12-01 DOI: 10.1016/j.matdes.2021.110288

Shiyu Huang, Luning Wang, Yufeng Zheng, Lijie Qiao, Yu Yan

引用次数: 14

Strengthening mechanism of Al/Sn interfaces: Study from experiments and first-principles calculation Al/Sn界面强化机理:实验与第一性原理计算研究

IF 8.4

MATERIALS & DESIGN Pub Date : 2021-12-01 DOI: 10.1016/j.matdes.2021.110292

Han Yan, Weibing Guo, Tianmin Luan, Xinran Ma, Guojin Xu, X. Leng, Weiwei Zhao, Jiuchun Yan

引用次数: 8

Effects of processing heterogeneities on the micro- to nanostructure strengthening mechanisms of an Alloy 718 turbine disk 加工非均质性对718合金涡轮盘微纳强化机制的影响