Materials & Design最新文献_第5页

Investigate on dissimilar welding of high-entropy alloy and 310S with various fillers 研究高熵合金和 310S 与各种填充物的异种焊接

IF 7.6 2区材料科学

Materials & Design Pub Date : 2024-11-13 DOI: 10.1016/j.matdes.2024.113454

Chihhsien Liao , Tingen Shen , Weichen Hsu , Hsiencheng Wu , Chenchou Chung , Chunlung Peng , Chewei Tsai

引用次数: 0

In situ X-ray imaging and quantitative analysis of balling during laser powder bed fusion of 316L at high layer thickness 316L 高层厚度激光粉末床熔化过程中的原位 X 射线成像和成球定量分析

IF 7.6 2区材料科学

Materials & Design Pub Date : 2024-11-13 DOI: 10.1016/j.matdes.2024.113442

Ziao Yan , Shicheng Liu , Zhanpeng Sun , Kangshuo Li , Nan Su , Guang Yang

{"title":"In situ X-ray imaging and quantitative analysis of balling during laser powder bed fusion of 316L at high layer thickness","authors":"Ziao Yan , Shicheng Liu , Zhanpeng Sun , Kangshuo Li , Nan Su , Guang Yang","doi":"10.1016/j.matdes.2024.113442","DOIUrl":"10.1016/j.matdes.2024.113442","url":null,"abstract":"<div><div>Balling is the main surface defect in additive manufacturing, leading to surface roughness and uneven powder deposition. Through the in-situ X-ray imaging technology, the melting process of high layer thickness 316L powder under different process parameters was investigated in real time in this work. We systematically elaborate the complex formation mechanism of balling at high layer thickness, and the key mechanism underlies the splatter’s coalescence during the flight and solidification stages. The frequent spatters coalescence dominates the large-size balling. The spatter coalescence event was roughly quantified, and the coalescence rate ranges from 42.42 % to 73.04 %. The swing of the irregular balls and jumping of the regular small balls were observed, and the solidification time ranges from 10 ms to 20 ms. Moreover, the detailed morphological parameters including the contact angle and counts of the spatter were clarified, and the algebraic equations about the contact angle and the volumetric energy density were established. This study provides a systematical understanding of the balling phenomenon during laser powder bed fusion of 316L at high layer thickness.</div></div>","PeriodicalId":383,"journal":{"name":"Materials & Design","volume":"248 ","pages":"Article 113442"},"PeriodicalIF":7.6,"publicationDate":"2024-11-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142655039","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

Study on the melting and sintering behavior of Cu-Fe mixed nanoparticles based on molecular dynamics simulations 基于分子动力学模拟的铜铁混合纳米粒子熔化和烧结行为研究

IF 7.6 2区材料科学

Materials & Design Pub Date : 2024-11-13 DOI: 10.1016/j.matdes.2024.113457

Cheng Zhang , Wenfei Peng , Yiyu Shao , Moliar Oleksandr , Longhui Lu , Xiaohui Zhang

{"title":"Study on the melting and sintering behavior of Cu-Fe mixed nanoparticles based on molecular dynamics simulations","authors":"Cheng Zhang , Wenfei Peng , Yiyu Shao , Moliar Oleksandr , Longhui Lu , Xiaohui Zhang","doi":"10.1016/j.matdes.2024.113457","DOIUrl":"10.1016/j.matdes.2024.113457","url":null,"abstract":"<div><div>Understanding the melting and sintering behavior of composite metal nanoparticles is of great significance to promote the synthesis and application of nanomaterials. In this work, molecular dynamics simulation method was employed to examine in detail the influence of sintering temperature, particle size and Fe content on the melting and sintering behavior of Cu-Fe mixed nanoparticles. The results show that the melting point of Cu-Fe mixed nanoparticles exhibits a strong size dependence and gradually increases with the increase in Fe content. High sintering temperatures significantly promotes the sintering process and the degree of atomic migration, and the diffusion behavior on the surface is enhanced, providing a significant driving force for sintering. Since smaller particle sizes have higher surface energy, the relationship between the neck parameters during the sintering process of different particle sizes is 4 nm > 6 nm > 8 nm, and the displacement of surface atoms is always greater than that of internal atoms. As the Fe content increases, the sintering of nanoparticles and the migration of atoms decrease, leading to a lower degree of sintering. This study further provides an atomic-scale theoretical basis for the melting and sintering behavior of Cu-Fe mixed nanoparticles.</div></div>","PeriodicalId":383,"journal":{"name":"Materials & Design","volume":"248 ","pages":"Article 113457"},"PeriodicalIF":7.6,"publicationDate":"2024-11-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142706910","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

Design of a lightweight broadband vibration reduction structure with embedded acoustic black holes in viscoelastic damping materials 设计在粘弹性阻尼材料中嵌入声学黑洞的轻质宽带减震结构

IF 7.6 2区材料科学

Materials & Design Pub Date : 2024-11-12 DOI: 10.1016/j.matdes.2024.113450

Liang Xu , Jie Zhang , Jiang Li , Huaan Tian , Chaofan Zheng , Shaoyun Guo

{"title":"Design of a lightweight broadband vibration reduction structure with embedded acoustic black holes in viscoelastic damping materials","authors":"Liang Xu , Jie Zhang , Jiang Li , Huaan Tian , Chaofan Zheng , Shaoyun Guo","doi":"10.1016/j.matdes.2024.113450","DOIUrl":"10.1016/j.matdes.2024.113450","url":null,"abstract":"<div><div>Viscoelastic damping materials (VDMs) are valued for their high damping characteristics in vibration and noise control. However, they typically underperform at lower frequencies and add substantial mass to structures. This study introduces an innovative approach by embedding an acoustic black hole (ABH) structure within VDMs (ABH-VDM) to achieve lightweight and broadband vibration damping. Firstly, a finite element method-based vibration model is developed to analyse the propagation and attenuation characteristics of vibrations in a plate strip embedded with ABH-VDM. This analysis provides insights into the dynamic behaviour and damping effectiveness of the proposed structure. Secondly, the study investigates the vibration reduction capabilities and mass implications of ABH-VDM on large-scale plate structures. The influence of ABH structural parameters, including the power exponent, cut-off thickness, and array configuration, is systematically investigated to optimize damping performance. Finally, experimental validation confirms that ABH-VDM achieves an additional 1.4 dB reduction in vibration across the entire frequency spectrum, with a bandwidth extension of 900 Hz. Moreover, ABH-VDM reduces mass by 8.6 %, demonstrating its potential for lightweight vibration control in structural applications. This research contributes valuable insights into advancing lightweight and broadband damping solutions for enhanced vibration management in engineering systems.</div></div>","PeriodicalId":383,"journal":{"name":"Materials & Design","volume":"248 ","pages":"Article 113450"},"PeriodicalIF":7.6,"publicationDate":"2024-11-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142655040","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

Ageing response and microstructural evolution of biodegradable Zn-1.5Cu-1.5Ag alloy 可生物降解 Zn-1.5Cu-1.5Ag 合金的老化响应和微结构演变

IF 7.6 2区材料科学

Materials & Design Pub Date : 2024-11-10 DOI: 10.1016/j.matdes.2024.113448

Chun Chen , Xiang Wang , Hua Huang , Jialin Niu , Jian-Feng Nie , Guangyin Yuan

{"title":"Ageing response and microstructural evolution of biodegradable Zn-1.5Cu-1.5Ag alloy","authors":"Chun Chen , Xiang Wang , Hua Huang , Jialin Niu , Jian-Feng Nie , Guangyin Yuan","doi":"10.1016/j.matdes.2024.113448","DOIUrl":"10.1016/j.matdes.2024.113448","url":null,"abstract":"<div><div>In this study, the age-hardening response and microstructural evolution of an as-extruded biodegradable Zn-1.5Cu-1.5Ag (wt.%) alloy during ageing at 25 ℃, 100 ℃, 150 ℃ and 200 ℃ are studied. The age-hardening response is generally weak, and the largest hardness increment is observed after ageing at 150 ℃ for 24 hours. Discontinuous precipitation (DP) and continuous precipitation (CP) occur competitively during ageing at 150 ℃ or 200 ℃, while only DP is observed during ageing at 25 ℃ or 100 ℃. All the precipitates formed through DP and CP are identified as <em>ε</em>-(Ag, Cu)Zn<sub>4</sub> that has a hexagonal structure. Analysis of possible strengthening mechanisms shows that grain boundary strengthening and precipitation hardening contribute to the major part of yield strength in the as-extruded condition. Ageing treatments generate a limited increment in yield strength due to the small difference between the hardness of <em>ε</em>-(Ag, Cu)Zn<sub>4</sub> and the Zn matrix and the reduced solid solution strengthening effect. Artificial ageing at 150 ℃ for 48 hours effectively improves the stability of the mechanical properties of the as-extruded Zn-1.5Cu-1.5Ag alloy. This process fully depletes the excessive solutes in the supersaturated Zn matrix, ensuring that the alloy maintains consistent mechanical properties when stored at room temperature.</div></div>","PeriodicalId":383,"journal":{"name":"Materials & Design","volume":"248 ","pages":"Article 113448"},"PeriodicalIF":7.6,"publicationDate":"2024-11-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142655042","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

Machine learning powered predictive modelling of complex residual stress for nuclear fusion reactor design 机器学习驱动的复杂残余应力预测建模，用于核聚变反应堆设计

IF 7.6 2区材料科学

Materials & Design Pub Date : 2024-11-09 DOI: 10.1016/j.matdes.2024.113449

Bin Zhu , Nathanael Leung , Brandon Steel , David England , Yinglong He , Andrew J. London , Hannah Zhang , Michael Gorley , Yiqiang Wang , Mark J. Whiting , Tan Sui

{"title":"Machine learning powered predictive modelling of complex residual stress for nuclear fusion reactor design","authors":"Bin Zhu , Nathanael Leung , Brandon Steel , David England , Yinglong He , Andrew J. London , Hannah Zhang , Michael Gorley , Yiqiang Wang , Mark J. Whiting , Tan Sui","doi":"10.1016/j.matdes.2024.113449","DOIUrl":"10.1016/j.matdes.2024.113449","url":null,"abstract":"<div><div>Fusion In-vessel components, assembled and maintained using laser welding, one of the most promising techniques, exhibit complex distributions of residual stress, microstructures, and material properties. These residual stresses can compromise structural integrity and lifespan of critical components. Although using advanced experimental measurements can evaluate the residual stress for individual case, extending the measurements to massive number of components are costly and time-consuming. Traditional machine learning (ML) models struggle to account for the heterogeneity and anisotropy of these stress distributions. Here, we develop a novel ML framework based on the Eurofer97 steel, the structural material for in-vessel components. The ML framework is trained on high-resolution residual stress data derived from recently-developed evaluation techniques. Combining with microstructures, the model enables prediction of heterogenous and anisotropic residual stress distribution. It successfully predicts the compressive residual stress in fusion zone (∼−200 MPa) balanced by tensile residual stress in heat affected zone (∼300 MPa), aligning closely with experimental results with the <em>R</em>-squared value of 0.989 and the mean square error of 10<sup>−4</sup>. Unlike experiments that take hours, the ML model provides predictions within seconds. It offers valuable insights into residual stress prediction for various joints, enhancing the reliability and lifetime prediction of in-vessel components.</div></div>","PeriodicalId":383,"journal":{"name":"Materials & Design","volume":"248 ","pages":"Article 113449"},"PeriodicalIF":7.6,"publicationDate":"2024-11-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142655041","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

Alloying at the nanoscale 纳米级合金

IF 7.6 2区材料科学

Materials & Design Pub Date : 2024-11-01 DOI: 10.1016/j.matdes.2024.113410

Cai Lu , Bozhao Wu , Yangyang Pan , Hui Fang , Jianxin Liu , Xiaoqi Yang , Ze Liu

引用次数: 0

Analysis of mechanical properties and microstructure of single and double-pass friction stir welded T-joints for aluminium stiffened panels 铝加劲板单层和双层搅拌摩擦焊接 T 型接头的机械性能和微观结构分析

IF 7.6 2区材料科学

Materials & Design Pub Date : 2024-11-01 DOI: 10.1016/j.matdes.2024.113438

Douglas Wagner , Matteo Bernardi , Felix Grassel , Ting Chen , Kai Schimanski , Luciano Bergmann , Benjamin Klusemann

{"title":"Analysis of mechanical properties and microstructure of single and double-pass friction stir welded T-joints for aluminium stiffened panels","authors":"Douglas Wagner , Matteo Bernardi , Felix Grassel , Ting Chen , Kai Schimanski , Luciano Bergmann , Benjamin Klusemann","doi":"10.1016/j.matdes.2024.113438","DOIUrl":"10.1016/j.matdes.2024.113438","url":null,"abstract":"<div><div>This study investigates the application of Friction Stir Welding (FSW) for fabricating stiffened structures in AA2219-T31 using a T-lap configuration. These structures are vital in various applications where weight is a crucial factor, including aircraft fuselages, railway cars and automotive parts. This study assesses the formation dynamics of lack of bonding in single-pass welds, including the examination of microstructure, hardness, mechanical properties, and fracture locations. A second welding pass was employed over the initial weld to eliminate the lack of bonding. The implementation of a second welding pass significantly improves joint efficiency, achieving up to 90 % of the ultimate tensile strength in the skin direction and 95 % in the stiffener direction, establishing a new benchmark for AA2219-T31 T-joints. Additionally, no significant differences in grain size were found between single- and double-pass welds, highlighting the lack of bonding as key factor affecting the strength of the joints. The proposed method offers valuable insights for future industrial applications to avoid defects such as lack of bonding.</div></div>","PeriodicalId":383,"journal":{"name":"Materials & Design","volume":"247 ","pages":"Article 113438"},"PeriodicalIF":7.6,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142651918","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

Coarsening mechanism of M2B-borides and their effect on the mechanical properties of high modulus steels M2B 硼化物的粗化机理及其对高模量钢机械性能的影响

IF 7.6 2区材料科学

Materials & Design Pub Date : 2024-11-01 DOI: 10.1016/j.matdes.2024.113411

M. Gathmann , D. Moisi , H. Springer

{"title":"Coarsening mechanism of M2B-borides and their effect on the mechanical properties of high modulus steels","authors":"M. Gathmann , D. Moisi , H. Springer","doi":"10.1016/j.matdes.2024.113411","DOIUrl":"10.1016/j.matdes.2024.113411","url":null,"abstract":"<div><div>Size, morphology and distribution of light and stiff, but inherently brittle particles are of critical importance for the property profile of high modulus steels. Powder atomisation can dramatically reduce the borides’ size to the nanoscale, but they typically coarsen substantially during annealing or compaction via hot isostatic pressing. This study investigated the effect of compaction parameters, namely temperature, pressure and time on the coarsening mechanism, porosity evolution and resultant mechanical properties of atomised Fe-Cr-B powder. Increasing annealing temperature and time from 950 to 1150 °C, respectively, 30 min to 8 h, resulted in a non-linear boride radius growth from 76 nm in the atomised state to 1.9 µm. Hot isostatic pressing, with additional pressures up to 140 MPa, decreased the pore size from about 5 to 0.2 µm. An optimised hot isostatic pressing processing window was defined at 1050 °C and 140 MPa, combining sufficiently reduced defects with a limited particle radius, and yielded in 730 MPa tensile strength at more than 20 % tensile elongation. Powder-metallurgical synthesis of Fe-Cr-B achieved similar properties to casted and hot-rolled material, by avoiding component size scaling effects of casting. The underlying phenomena and optimisation of high modulus steel production via powder metallurgy are discussed.</div></div>","PeriodicalId":383,"journal":{"name":"Materials & Design","volume":"247 ","pages":"Article 113411"},"PeriodicalIF":7.6,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142651920","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

Fatigue and short crack assessment of powder bed fusion laser-based fabricated AlSi10Mg miniature specimens under alternating bending load 交变弯曲载荷下基于粉末床熔融激光技术制造的 AlSi10Mg 微型试样的疲劳和短裂纹评估

IF 7.6 2区材料科学

Materials & Design Pub Date : 2024-11-01 DOI: 10.1016/j.matdes.2024.113412

Sebastian Stammkötter , Jochen Tenkamp , Mirko Teschke , Kai Donnerbauer , Alexander Koch , Timo Platt , Dirk Biermann , Frank Walther

{"title":"Fatigue and short crack assessment of powder bed fusion laser-based fabricated AlSi10Mg miniature specimens under alternating bending load","authors":"Sebastian Stammkötter , Jochen Tenkamp , Mirko Teschke , Kai Donnerbauer , Alexander Koch , Timo Platt , Dirk Biermann , Frank Walther","doi":"10.1016/j.matdes.2024.113412","DOIUrl":"10.1016/j.matdes.2024.113412","url":null,"abstract":"<div><div>Al-Si alloys are commonly used in the automotive and aircraft industry because of their excellent strength-to-weight ratio. Due to the laser powder bed fusion manufacturing process, inhomogeneous cooling affects the microstructure as well as defect distributions. Within this paper, the uniform fatigue damage tolerance assessment was further qualified for (miniature) bending specimens with different loaded volumes based on the concepts according to Murakami (√area) and Shiozawa for an initial defect-based model. These approaches were used to calculate defect-related fatigue life curves, in which the cyclic stress intensity factor (Δ<em>K</em>) at the initiating defect (√area) was used to represent local stress concentration at the crack tip instead of nominal stress-based S-N curves. Results of S-N curves did not allow a precise lifetime prediction due to increasing effect of manufacturing-related defect distributions, while fracture mechanical approaches enable a uniform fatigue lifetime description of different testing volumes. The calculated fatigue limit and short crack threshold value suggested by Noguchi based on the extended approach of Murakami need to be compared and validated experimentally. Furthermore, the effects of miniaturization and crack propagation have been identified and considered. Uniform fatigue life predictions and efficient materials testing have been combined and show potential for future research.</div></div>","PeriodicalId":383,"journal":{"name":"Materials & Design","volume":"247 ","pages":"Article 113412"},"PeriodicalIF":7.6,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142651858","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