Materialia最新文献_第5页

Mechanical response of LPBFed TI64 thickness graded Voronoi lattice structures LPBFed TI64 厚度分级 Voronoi 网格结构的机械响应

IF 3

Materialia Pub Date : 2024-09-11 DOI: 10.1016/j.mtla.2024.102234

Chiara Bregoli , Jacopo Fiocchi , Mehrshad Mehrpouya , Laura Maria Vergani , Ausonio Tuissi , Carlo Alberto Biffi

{"title":"Mechanical response of LPBFed TI64 thickness graded Voronoi lattice structures","authors":"Chiara Bregoli , Jacopo Fiocchi , Mehrshad Mehrpouya , Laura Maria Vergani , Ausonio Tuissi , Carlo Alberto Biffi","doi":"10.1016/j.mtla.2024.102234","DOIUrl":"10.1016/j.mtla.2024.102234","url":null,"abstract":"<div><p>The possibility to realize Additively Manufactured functionally graded lattice structure based on Voronoi tessellation enormously increases the possibility in tailoring the stiffness, mechanical properties and energy absorption capacity of the samples. The work presents the design and mechanical characterization of functionally thickness graded Voronoi lattice structures in comparison with constant thickness lattice structures for the evaluation of mechanical performance and energy absorption capacity. Firstly, the design and laser power bed fusion process are detailed. The dimensional deviation between designed models and Ti6Al4V specimens is quantified to assess the samples’ quality. Their mechanical performance is analyzed by quasi-static compression experimental tests, supported by numerical analysis for the evaluation of local stress distributions and deformation modes. The average dimensional deviation between CAD models and fabricated samples is 0.09 mm, likeminded with the literature optimum. The structures exhibit Young Modulus values ranging between 10 MPa and 21 MPa, compatible with biomedical applications. The compressive force for thickness graded structures tends to increase up to densification, while uniform thickness structures present an almost constant value of force in the platform stage. Additionally, the energy storage changes according to the presence of thickness gradient: the larger the thickness gradient, the larger the energy absorption capacity.</p></div>","PeriodicalId":47623,"journal":{"name":"Materialia","volume":null,"pages":null},"PeriodicalIF":3.0,"publicationDate":"2024-09-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S258915292400231X/pdfft?md5=492cb71c5b215d618f00acf63a8a1f9a&pid=1-s2.0-S258915292400231X-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142229081","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Compressive behavior of SLA open-cell lattices: A comparison between triply periodic minimal surface gyroid and stochastic structures for artificial bone SLA 开孔晶格的压缩行为：用于人工骨骼的三周期性最小表面陀螺结构与随机结构的比较

IF 3

Materialia Pub Date : 2024-09-11 DOI: 10.1016/j.mtla.2024.102233

Miguel Araya , Josué Murillo , Rafael Vindas , Teodolito Guillén

{"title":"Compressive behavior of SLA open-cell lattices: A comparison between triply periodic minimal surface gyroid and stochastic structures for artificial bone","authors":"Miguel Araya , Josué Murillo , Rafael Vindas , Teodolito Guillén","doi":"10.1016/j.mtla.2024.102233","DOIUrl":"10.1016/j.mtla.2024.102233","url":null,"abstract":"<div><p>This study evaluates the compressive properties of stereolithography (SLA) fabricated open-cell lattices, specifically triply periodic minimal surface (TPMS) gyroid and stochastic structures, for artificial bone applications. Two resins, Standard White and BioMed Amber, were tested across four relative densities (0.2, 0.3, 0.4, 0.5). Mechanical characterization of horse tuber coxae trabecular bone used as a biological comparator showed an average elastic modulus of 0.05 GPa and a yield strength of 3.369 MPa. Gyroid structures exhibited higher elastic modulus and yield strengths, with BioMed Amber gyroid at a density of 0.5, achieving an elastic modulus of 0.623 GPa and yield strength of 14.149 MPa. Stochastic structures showed lower and more variable mechanical properties. The highest yield strength for stochastic structures was observed in BioMed Amber at a density of 0.5 (14.199 MPa). Comparative analysis indicated that high-performing synthetic structures approach the lower bounds of natural bone properties. Using a field-driven design approach, variable relative density structures were developed to emulate the mechanical properties of natural bone. SEM analysis provided insights into failure mechanisms, highlighting the impact of relative density on structural integrity and material ductility. This research supports the development of 3D-printed bone-like structures as viable substitutes for cadaveric specimens in preclinical tests, with implications for material science and orthopedic applications.</p></div>","PeriodicalId":47623,"journal":{"name":"Materialia","volume":null,"pages":null},"PeriodicalIF":3.0,"publicationDate":"2024-09-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2589152924002308/pdfft?md5=b779b782de0d11c984d0433c5356e158&pid=1-s2.0-S2589152924002308-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142229080","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Thermal behavior of coated powder during directed energy deposition (DED) 定向能沉积 (DED) 过程中涂层粉末的热行为

IF 3

Materialia Pub Date : 2024-09-11 DOI: 10.1016/j.mtla.2024.102235

Sen Jiang , Baolong Zheng , David Svetlizky , Lorenzo Valdevit , Noam Eliaz , Enrique J. Lavernia , Julie M. Schoenung

{"title":"Thermal behavior of coated powder during directed energy deposition (DED)","authors":"Sen Jiang , Baolong Zheng , David Svetlizky , Lorenzo Valdevit , Noam Eliaz , Enrique J. Lavernia , Julie M. Schoenung","doi":"10.1016/j.mtla.2024.102235","DOIUrl":"10.1016/j.mtla.2024.102235","url":null,"abstract":"<div><p>In powder-based additive manufacturing (AM), the quality of the feedstock material is critical for obtaining enhanced mechanical properties. Recently, the application of coated powders during directed energy deposition (DED) has been prompted by the goal of fabricating composite and functional materials in-situ. The complex temperature and momentum fields established during DED render direct experimental characterization of coated powder behavior challenging. To address this challenge, this study reports on the thermal behavior of coated powders during interactions with the molten pool by constructing three-dimensional heat transfer and phase distribution models using the finite elements method (FEM). Transient temperature and phase distributions were calculated for coated and uncoated stainless steel 316L and ZnAl powders under various particle size, coating thickness, molten pool temperature, and coating material conditions. Particle residence time values were extracted from the calculations, defined as time spent by the particle before a phase change. The results show large variations in particle residence time (85 μs to 2670 μs for stainless steel 316L particles, and 48 μs to infinity for ZnAl particles) as a function of the variables considered, especially the thermal diffusivity of the coating materials, thereby highlighting the potential value of coatings as an additional design parameter in DED. Significant increases in particle residence time for both stainless steel 316L and ZnAl particles were found when contact angle increases from 0° (submergence regime) to 180° (floating regime).</p></div>","PeriodicalId":47623,"journal":{"name":"Materialia","volume":null,"pages":null},"PeriodicalIF":3.0,"publicationDate":"2024-09-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142243920","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: 0

Impact of multi-scale microstructural heterogeneities on the mechanical behavior of additively manufactured and post-processed Nb-based C103 alloy 多尺度微结构异质性对添加制造和后处理铌基 C103 合金力学行为的影响

IF 3

Materialia Pub Date : 2024-09-10 DOI: 10.1016/j.mtla.2024.102230

Advika Chesetti , Tirthesh Ingale , Sucharita Banerjee , Madhavan Radhakrishnan , Narendra B. Dahotre , Abhishek Sharma , Rajarshi Banerjee

引用次数: 0

Defect evolution in pure iron under simultaneous in-situ irradiation with Fe+-He+-H2+: Impact of hydrogen & helium-dose ratios 用 Fe+-He+-H2+ 同时原位辐照纯铁时的缺陷演化：氢和氦剂量比的影响

IF 3

Materialia Pub Date : 2024-09-08 DOI: 10.1016/j.mtla.2024.102227

Ziqi Cao , Chengen Li , Yifan Ding , Deiwang Cui , Qinghong Zhong , Guang Ran

{"title":"Defect evolution in pure iron under simultaneous in-situ irradiation with Fe+-He+-H2+: Impact of hydrogen & helium-dose ratios","authors":"Ziqi Cao , Chengen Li , Yifan Ding , Deiwang Cui , Qinghong Zhong , Guang Ran","doi":"10.1016/j.mtla.2024.102227","DOIUrl":"10.1016/j.mtla.2024.102227","url":null,"abstract":"<div><p>The properties of materials in irradiation environments are significantly influenced by hydrogen and helium. However, the effects of gas-dose ratio on the evolution of defects, which are crucial for material application assessment in various nuclear reactors and for understanding fundamental irradiation mechanisms, remain unclear. In this paper, defect evolution within pure iron was investigated in-situ through simultaneous triple-beam irradiation at 723 K using 400 keV Fe<sup>+</sup>, 50 keV He<sup>+</sup> and 50 keV H<sub>2</sub><sup>+</sup>. Four different gas-dose ratios were used: 10 appm He/dpa & 45 appm H/dpa, 10 appm He/dpa & 100 appm H/dpa, 100 appm He/dpa & 100 appm H/dpa, and 45 appm He/dpa & 10 appm H/dpa. It was observed that the gas-dose ratio significantly influenced the evolution of defects, including the size and density of dislocation loops and bubbles. It was found that an increased hydrogen-dose ratio, when paired with a constant helium-dose ratio, resulted in smaller loop sizes, but increased the density of loops and bubbles. Conversely, maintaining a constant hydrogen dose ratio while increasing the helium dose ratio proved advantageous for raising the density of loops and bubbles, and for reducing loop size. Additionally, an increase in both hydrogen and helium-dose ratios was associated with heightened swelling due to bubble formation. Moreover, hydrogen was found to have a less impact on loop nucleation compared to helium, and helium exhibited a more pronounced inhibitory effect on loop migration than hydrogen.</p></div>","PeriodicalId":47623,"journal":{"name":"Materialia","volume":null,"pages":null},"PeriodicalIF":3.0,"publicationDate":"2024-09-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142164473","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: 0

Enhanced radiation damage tolerance in Zr-doped UO2 增强掺锆二氧化铀的辐射损伤耐受性

IF 3

Materialia Pub Date : 2024-09-08 DOI: 10.1016/j.mtla.2024.102226

R. Mohun , S.C. Middleburgh , P.J. Thomas , C.L. Corkhill

引用次数: 0

Translucent persistent luminescence glass matrix composite obtained by pressureless viscous sintering 通过无压粘性烧结获得半透明持久发光玻璃基复合材料

IF 3

Materialia Pub Date : 2024-09-05 DOI: 10.1016/j.mtla.2024.102222

Roger Gomes Fernandes , Elaine de Andrade Mattos , Victor Murilo Poltronieri da Silva , David Van der Heggen , Philippe F. Smet , Danilo Manzani , Verônica de Carvalho Teixeira , Lucas Carvalho Veloso Rodrigues

{"title":"Translucent persistent luminescence glass matrix composite obtained by pressureless viscous sintering","authors":"Roger Gomes Fernandes , Elaine de Andrade Mattos , Victor Murilo Poltronieri da Silva , David Van der Heggen , Philippe F. Smet , Danilo Manzani , Verônica de Carvalho Teixeira , Lucas Carvalho Veloso Rodrigues","doi":"10.1016/j.mtla.2024.102222","DOIUrl":"10.1016/j.mtla.2024.102222","url":null,"abstract":"<div><p>Translucent persistent luminescence glass matrix composites (PeL-GMCs) were successfully obtained for the first time using a pressureless viscous sintering method with silicate glass as the host material. Initially, persistent luminescence microparticles (PeL-MPs) of SrAl<sub>2</sub>O<sub>4</sub>: Eu<sup>2+</sup>; Dy<sup>3+</sup> were prepared by microwave-assisted synthesis under a reducing atmosphere. To obtain persistent luminescent glass matrix composites, 1 wt. % of these particles were mixed with soda-lime-silicate glass beads and pressed into pellets. Subsequently, the disk-shaped samples were heat-treated through pressureless viscous sintering. Despite some material porosity, the PeL-GMCs exhibited translucency and prolonged persistent luminescence <span><math><mrow><mo>(</mo><mrow><mo>∼</mo><mspace></mspace><mn>12</mn><mspace></mspace><mi>m</mi><mi>i</mi><mi>n</mi></mrow><mo>)</mo></mrow></math></span>. Additionally, we noted excellent compatibility between the PeL-MPs and the glass host, since no chemical interaction was found, as verified by optical microscopy, energy dispersive X-ray (EDX) mapping analysis and cathodoluminescence (CL) in SEM. Furthermore, the afterglow intensity of the particles was maintained after the preparation of materials.</p></div>","PeriodicalId":47623,"journal":{"name":"Materialia","volume":null,"pages":null},"PeriodicalIF":3.0,"publicationDate":"2024-09-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142173526","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: 0

Effect of sulfur impurity on the nucleation of α-Cr precipitates in nickel-based alloys 硫杂质对镍基合金中 α-Cr 沉淀成核的影响

IF 3

Materialia Pub Date : 2024-09-04 DOI: 10.1016/j.mtla.2024.102220

Yusuke Kohigashi , Takafumi Amino , Tomoaki Hamaguchi , Daichi Akahoshi , Koji Moriguchi , Hiroyuki Semba , Kazuma Ito

引用次数: 0

Effect of cryogenic milling on the mechanical and corrosion properties of ODS Hastelloy-N 低温研磨对 ODS 哈斯特洛伊-N 的机械和腐蚀特性的影响

IF 3

Materialia Pub Date : 2024-09-01 DOI: 10.1016/j.mtla.2024.102215

Minsung Hong , Jeffrey E. Bickel , Ertugrul Demir , D. Kaoumi , Peter Hosemann

{"title":"Effect of cryogenic milling on the mechanical and corrosion properties of ODS Hastelloy-N","authors":"Minsung Hong , Jeffrey E. Bickel , Ertugrul Demir , D. Kaoumi , Peter Hosemann","doi":"10.1016/j.mtla.2024.102215","DOIUrl":"10.1016/j.mtla.2024.102215","url":null,"abstract":"<div><p>This study entails the fabrication of two oxide-dispersion strengthened (ODS) Hastelloy-N (HN) alloys utilizing divergent methods. The first alloy was synthesized using cryogenic attritor milling coupled with spark plasma sintering (SPS), while the second was produced via room temperature attritor milling and SPS. The ODS HN alloy derived from cryogenic milling demonstrated superior strength relative to its commercial-grade counterpart. Conversely, the alloy produced through room temperature milling exhibited lower ultimate tensile strength (UTS), attributed to manufacturing defects and the precipitation of Zr at grain boundaries. Corrosion resistance in molten FLiNaK for both ODS samples was found to be inferior compared to commercial HN. Particularly, in the room temperature-milled ODS HN, Zr present at grain boundaries appeared to dissolve more readily than in cryogenic or commercial samples, facilitating enhanced penetration by molten salt. The cryogenically-milled ODS HN contained Zr, yet it was not segregated to grain boundaries. Although the homogeneously dispersed Mo-based compound in the cryogenically-milled ODS HN augmented mechanical properties, it also accelerated corrosion propagation beyond that of the commercial-grade alloy.</p></div>","PeriodicalId":47623,"journal":{"name":"Materialia","volume":null,"pages":null},"PeriodicalIF":3.0,"publicationDate":"2024-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142095192","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: 0

Effect of TiN coating on suppressing Ce-Fe interaction under irradiation TiN 涂层对抑制辐照下 Ce-Fe 相互作用的影响

IF 3

Materialia Pub Date : 2024-09-01 DOI: 10.1016/j.mtla.2024.102221

Jian Gan , Chao Jiang , Yizhi Zhang , Yifan Zhang , Jiawei Song , Ke Xu , Benson Kunhung Tsai , Xuanyu Sheng , Haiyan Wang , Yinbin Miao , Peter Mouche , Kun Mo , Bei Ye

{"title":"Effect of TiN coating on suppressing Ce-Fe interaction under irradiation","authors":"Jian Gan , Chao Jiang , Yizhi Zhang , Yifan Zhang , Jiawei Song , Ke Xu , Benson Kunhung Tsai , Xuanyu Sheng , Haiyan Wang , Yinbin Miao , Peter Mouche , Kun Mo , Bei Ye","doi":"10.1016/j.mtla.2024.102221","DOIUrl":"10.1016/j.mtla.2024.102221","url":null,"abstract":"<div><p>Advanced cladding is critical for fast reactors with the adequate thermal conductivity, mechanical stability and radiation tolerance of the cladding base material, corrosion resistance and high temperature coolant compatibility of the cladding surface, and chemical stability of the cladding inner wall against fuel cladding chemical interaction (FCCI). The preliminary results of recent ion irradiation studies of two diffusion-couple samples of cerium (Ce)/oxide-dispersion strengthened steel (ODS) and Ce/TiN/ODS, irradiated with 80 MeV xenon (Xe) ions to 100 displacements per atom (dpa) at 500°C, are summarized. Significant Ce-Fe interaction occurred in the Ce/ODS sample, and no noticeable Ce-Fe interaction was found in the Ce/TiN/ODS sample. It shows the effectiveness of 1-µm TiN diffusion barrier coated by the pulsed laser deposition on suppressing Ce-Fe interaction, a major contributor to FCCI in cladding. Density function theory (DFT) calculations of the impurity diffusivities of Ce and Fe within the Ti sublattice of TiN were performed to assist a mechanistic understanding of the experimental results.</p></div>","PeriodicalId":47623,"journal":{"name":"Materialia","volume":null,"pages":null},"PeriodicalIF":3.0,"publicationDate":"2024-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142149167","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: 0