Materials & Design最新文献_第8页

Integrated top-down process and voxel-based microstructure modeling for Ti-6Al-4V in laser wire direct energy deposition process 激光线直接能量沉积工艺中 Ti-6Al-4V 自上而下工艺和基于体素的微观结构综合建模

IF 7.6 2区材料科学

Materials & Design Pub Date : 2024-11-01 DOI: 10.1016/j.matdes.2024.113434

Yousub Lee , Peeyush Nandwana , Brian Gibson , Paritosh Mhatre , Julio Ortega Rojas , Bhagyashree Prabhune , Aaron Thornton , Joshua Vaughan , Srdjan Simunovic

{"title":"Integrated top-down process and voxel-based microstructure modeling for Ti-6Al-4V in laser wire direct energy deposition process","authors":"Yousub Lee , Peeyush Nandwana , Brian Gibson , Paritosh Mhatre , Julio Ortega Rojas , Bhagyashree Prabhune , Aaron Thornton , Joshua Vaughan , Srdjan Simunovic","doi":"10.1016/j.matdes.2024.113434","DOIUrl":"10.1016/j.matdes.2024.113434","url":null,"abstract":"<div><div>Laser-wire metal additive manufacturing (AM) is one of the ideal direct energy deposition (DED) processes for creating large-scale parts with a medium level of complexity. However, the DED process involves complex thermal signatures and wide length scales making the fabrication of realistic AM components and part qualification often reliant on experimental trial-and-error optimization. While experimental measurements over the full volume of a part are valuable and necessary, measuring the entire area of a part is significantly laborious and practically infeasible, particularly for large parts in terms of cost and rapid qualification. Therefore, in this work, we developed an effective thermal and microstructure modeling framework based on the Johnson–Mehl-Avrami-Kolmogorov (JMAK) and Koistinen & Marburger (KM) models through a top-down approach that considers plate distortion-affected thermal profiles. A voxel-by-voxel simulation method is used to predict individual phase fractions of Ti-6Al-4 V. The predicted results were validated through detailed metallurgical measurements. A combined voxel-by-voxel approach with a sparse data reconstruction technique produced a near-perfect reconstruction of the original data. This approach anticipates a significant reduction in data points and computation time and resources. Lastly, we conclude with potential extensions of this work to other modeling efforts.</div></div>","PeriodicalId":383,"journal":{"name":"Materials & Design","volume":"247 ","pages":"Article 113434"},"PeriodicalIF":7.6,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142651923","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

In-situ synthesis and microstructural evolution of a SiC reinforced Al-50Si composite exhibiting exceptional thermal properties 具有优异热性能的碳化硅增强 Al-50Si 复合材料的原位合成与微结构演化

IF 7.6 2区材料科学

Materials & Design Pub Date : 2024-11-01 DOI: 10.1016/j.matdes.2024.113422

Chao Ding , Qi Shi , Huali Hao , Rui Ma , Shukui Li , Changqing Ye , Changyang Yu , Xin Liu , Peng Yu , Shulong Ye

{"title":"In-situ synthesis and microstructural evolution of a SiC reinforced Al-50Si composite exhibiting exceptional thermal properties","authors":"Chao Ding , Qi Shi , Huali Hao , Rui Ma , Shukui Li , Changqing Ye , Changyang Yu , Xin Liu , Peng Yu , Shulong Ye","doi":"10.1016/j.matdes.2024.113422","DOIUrl":"10.1016/j.matdes.2024.113422","url":null,"abstract":"<div><div>Incorporating carbon nanotubes (CNTs) into Al-Si alloy to prepare in-situ SiC/Al-Si composites enhances thermal conductivity (TC) and reduces the coefficient of thermal expansion (CTE). However, challenges include CNTs aggregation and uneven SiC distribution. This study uses fluidized bed chemical vapor deposition (FBCVD) to achieve uniform CNTs coverage on Al-50Si powder. Subsequent powder hot extrusion and heat treatment above the eutectic temperature enable a gradual reaction between CNTs and Al/Si atoms, resulting in uniformly dispersed SiC within the SiC/Al-50Si composite. The formation mechanism of in-situ SiC particles and their impact on the microstructure, thermal and mechanical properties of the composite are further investigated. The formation process involves a two-step chemical reaction: lamellar Al<sub>4</sub>C<sub>3</sub> phases transform into lamellar eutectic SiC + Al phases, which then transition into polyhedral SiC particles through epitaxial growth. This in-situ formation of SiC particles also impedes Si growth during heat treatment, refining Si particles and enhancing the composite’s properties. The resulting in-situ SiC/Al-50Si composite exhibits excellent thermal and mechanical properties, including a high TC of ∼162 Wm<sup>-1</sup>K<sup>−1</sup>, a low CTE of ∼ 8.7 × 10<sup>-6</sup>/K, and a good bending strength of approximately 253 MPa at room temperature.</div></div>","PeriodicalId":383,"journal":{"name":"Materials & Design","volume":"247 ","pages":"Article 113422"},"PeriodicalIF":7.6,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142572936","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

Evaluating fracture toughness of cold sprayed IN625 coatings: Micro-scratching method 评估冷喷 IN625 涂层的断裂韧性：微划痕法

IF 7.6 2区材料科学

Materials & Design Pub Date : 2024-11-01 DOI: 10.1016/j.matdes.2024.113430

Avneesh Kumar, Marek Vostrak, Sarka Houdkova

{"title":"Evaluating fracture toughness of cold sprayed IN625 coatings: Micro-scratching method","authors":"Avneesh Kumar, Marek Vostrak, Sarka Houdkova","doi":"10.1016/j.matdes.2024.113430","DOIUrl":"10.1016/j.matdes.2024.113430","url":null,"abstract":"<div><div>Cold spray deposition of metals and alloys has gained considerable attention due to its advanced applications across various industries. This technique offers numerous advantages, including the absence of phase changes and oxidation. However, the process presents challenges due to its inherent complexities. Plastic deformation is crucial for the successful deposition of powder particles during cold spray. Therefore, achieving an optimal level of plastic deformation is essential. Fracture toughness is one of the important properties that can help understand the degree of plastic deformation in cold-sprayed coatings. Yet, measuring fracture toughness in these coatings is challenging because most evaluation methods are destructive and require large sample sizes. This study investigates the feasibility of predicting the fracture toughness of cold-sprayed coatings. Specifically, the micro-scratching method is employed to predict the fracture toughness of cold-sprayed IN625 coatings. IN625 is selected because of its high-end applications in sectors such as nuclear, marine, and aerospace component manufacturing. In addition to evaluating fracture toughness, the deposited coatings undergo rigorous testing and characterization to establish the microstructure-process-property relationship. The scaling of frictional force and fracture toughness confirms the validity of using scratch data for fracture toughness calculations. Hence, fracture toughness of the resulting coatings was successfully evaluated.</div></div>","PeriodicalId":383,"journal":{"name":"Materials & Design","volume":"247 ","pages":"Article 113430"},"PeriodicalIF":7.6,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142586267","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

Multi-scale structure and reinforcement mechanisms of multi-element composite ceramic coatings 多元素复合陶瓷涂层的多尺度结构和强化机制

IF 7.6 2区材料科学

Materials & Design Pub Date : 2024-11-01 DOI: 10.1016/j.matdes.2024.113444

Le Guo , Yu Zhang , Fengjuan Wang , Zhongyi Xin , Guangzhao Wang , Jinyang Jiang

{"title":"Multi-scale structure and reinforcement mechanisms of multi-element composite ceramic coatings","authors":"Le Guo , Yu Zhang , Fengjuan Wang , Zhongyi Xin , Guangzhao Wang , Jinyang Jiang","doi":"10.1016/j.matdes.2024.113444","DOIUrl":"10.1016/j.matdes.2024.113444","url":null,"abstract":"<div><div>Ceramic coating is of significant importance for improving metallic materials in terms of mechanical properties or durability, which is commonly encountered in the field of machinery, civil engineering, and aerospace, etc. However, ceramic materials optimization is a great challenge due to the complex multi-scale design from atomic to macro level. This paper investigates the multiscale characteristics of multi-element composite ceramic coating, including electronic properties, 3D pore structure, and engineering performances and gives their bottom-up connections, via first-principles calculations and multiscale experiments. The doping of Ti, Zr, and Ce in the alumina-based ceramic crystal improves the overlap of electronic clouds between oxygen and metal atoms, which modifies the atomic charges and enhances the ionic bonding. In terms of microstructure, it reveals the mechanisms of phase transformation toughening effect of ZrO<sub>2</sub> and the grain refinement and grain boundary purification effects of CeO<sub>2</sub>, which facilitates the amelioration of pore structure and macro mechanical properties. It provides multiscale information on the phase stability of multi-element alumina-based ceramics, shedding light on the fundamental atomic level mechanisms that play a crucial role in customizable functional designs.</div></div>","PeriodicalId":383,"journal":{"name":"Materials & Design","volume":"247 ","pages":"Article 113444"},"PeriodicalIF":7.6,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142651859","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

Effect of B4C nanoparticles addition on the refinement of Fe-rich phase in ZL108 alloy 添加 B4C 纳米粒子对 ZL108 合金中富铁相细化的影响

IF 7.6 2区材料科学

Materials & Design Pub Date : 2024-11-01 DOI: 10.1016/j.matdes.2024.113424

Wenhao Wang , RongFu Xu , Lixin Xiang , Yuxiu Han , Enfa Li , Shuhao Zhang , Hongliang Zheng

{"title":"Effect of B4C nanoparticles addition on the refinement of Fe-rich phase in ZL108 alloy","authors":"Wenhao Wang , RongFu Xu , Lixin Xiang , Yuxiu Han , Enfa Li , Shuhao Zhang , Hongliang Zheng","doi":"10.1016/j.matdes.2024.113424","DOIUrl":"10.1016/j.matdes.2024.113424","url":null,"abstract":"<div><div>Refining effect of B<sub>4</sub>C nanoparticles in ZL108 alloy on Fe-rich phase was studied in this work. It was observed that B<sub>4</sub>C nanoparticles apparently refines the size of the Fe-rich phases and partially transforms Fe-rich phases morphology from hollow polyhedron to petal-like shape. The DSC results show that B<sub>4</sub>C nanoparticles does not affect the initial nucleation temperature of the Fe-rich phase. However, the addition of B<sub>4</sub>C nanoparticles to ZL108 alloy inhibits the growth of Fe-rich phase. The TEM results confirm that the addition of B<sub>4</sub>C nanoparticles alters the lattice parameter of Fe-rich phase due to incorporation of C atoms, thereby suppressing the growth of the Fe-rich phase and ultimately leading to its refinement. From the perspective of fracture behavior, the addition of B<sub>4</sub>C nanoparticles remarkably reduces the stress concentration of Fe-rich phase, and the elongation of the alloy increases by 25.3%. These findings provide a new perspective for further research and development to refine Fe-rich phase.</div></div>","PeriodicalId":383,"journal":{"name":"Materials & Design","volume":"247 ","pages":"Article 113424"},"PeriodicalIF":7.6,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142651921","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

A flexible proximity-pressure–temperature tri-mode robotic sensor with stimulus discriminability, high sensitivity and wide perception range 具有刺激分辨能力、高灵敏度和宽感知范围的灵活近距离-压力-温度三模式机器人传感器

IF 7.6 2区材料科学

Materials & Design Pub Date : 2024-11-01 DOI: 10.1016/j.matdes.2024.113407

Yuanping Xu , Renkun Zhang , Jiatai Sun , Ding Zhang , Qiuying Zhao , Jinjun Duan , Lu Yang

{"title":"A flexible proximity-pressure–temperature tri-mode robotic sensor with stimulus discriminability, high sensitivity and wide perception range","authors":"Yuanping Xu , Renkun Zhang , Jiatai Sun , Ding Zhang , Qiuying Zhao , Jinjun Duan , Lu Yang","doi":"10.1016/j.matdes.2024.113407","DOIUrl":"10.1016/j.matdes.2024.113407","url":null,"abstract":"<div><div>Along with the explosive utilization of intelligent and bionic robotics, the rise of somatosensory system with excellent flexibility and multiple biological sensing characteristic emerges as a substantial crux of this domain. Herein, we propose a flexible high-performance multi-mode sensor for real-time proximity–pressure–temperature perception based on a monolithic sensing unit with fingerprint-like hierarchical architecture. The monolithic sensing unit, primarily constituted by a double-permeable ionic liquids/Multi-walled nanotubes conductive network, demonstrates dual-functionality in detecting pressure and temperature. Making use of the further synergy of rational topographical architecture engineering and feasible decoupling algorithm construction, extraordinary progress in sensing performances for both pressure and temperature are attained with negligible mutual interferences. Additionally, the sensor is capable of switching to touchless mode to detect objects at distance up to 200 mm, validating its remarkable proximity sensing ability. The multifunctional nature of sensor is further substantiated through its integration with a robotic hand, highlighting its practical applicability in advanced robotic systems.</div></div>","PeriodicalId":383,"journal":{"name":"Materials & Design","volume":"247 ","pages":"Article 113407"},"PeriodicalIF":7.6,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142560858","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

Multi-scale influences of as-cast microstructure heritability on intermediate/high temperature stress rupture behaviors of [111]-oriented Ni-based single crystal superalloy 铸造时微观结构遗传性对[111]取向镍基单晶超合金中/高温应力断裂行为的多尺度影响

IF 7.6 2区材料科学

Materials & Design Pub Date : 2024-11-01 DOI: 10.1016/j.matdes.2024.113425

Lei Xu , Junwu Wang , Yuanhang Gao , Yi Ru , Wenyue Zhao , Jinghui Jia , Bin Gan , Shan Li , Yanling Pei , Shusuo Li , Yue Ma , Shengkai Gong

{"title":"Multi-scale influences of as-cast microstructure heritability on intermediate/high temperature stress rupture behaviors of [111]-oriented Ni-based single crystal superalloy","authors":"Lei Xu , Junwu Wang , Yuanhang Gao , Yi Ru , Wenyue Zhao , Jinghui Jia , Bin Gan , Shan Li , Yanling Pei , Shusuo Li , Yue Ma , Shengkai Gong","doi":"10.1016/j.matdes.2024.113425","DOIUrl":"10.1016/j.matdes.2024.113425","url":null,"abstract":"<div><div>This study challenges the generally accepted principle that some degree of as-cast microstructure heritability (CMH), marked by <001> -oriented dendrite-associated inhomogeneity, is tolerable in conventional [001]-oriented Ni-based single crystal (SX) superalloys. Our findings reveal that this principle does not hold for newly developed [111]-oriented SX superalloys, where <001> -directed dendrites experience significant resolved shear stress under [111] applied loads. This work examines the stress rupture behaviors of a [111]-oriented low-Re Ni-based SX superalloy under various CMH conditions at 1100 °C/160 MPa and 760 °C/800 MPa. In the absence of CMH, the alloy achieves rupture properties comparable to fourth-generation SX superalloys. However, the presence of CMH drastically shortens rupture life and alters multi-scale deformation behaviors. High-temperature damage involves submicroscopic dislocation shearing, microscopic crack initiation, mesoscopic inter-dendritic crack connections, and macroscopic fractures. Intermediate-temperature damage is marked by submicroscopic stacking fault shearing, microscopic shear zone deformation, mesoscopic crack propagation, and macroscopic lattice rotation. Moreover, this research investigates the degradation mechanism of stress rupture property when the CMH is combined with slow cooling and reveals unique deformation behaviors, such as high-temperature subgrain formation and intermediate-temperature isolated micro-twins. This work provides new insights into the influence mechanism of the CMH.</div></div>","PeriodicalId":383,"journal":{"name":"Materials & Design","volume":"247 ","pages":"Article 113425"},"PeriodicalIF":7.6,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142651826","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

Microstructure evolution from homogeneous as-cast state to annealed heterogeneous structure and mechanical properties of Al-Zn-Mg-Cu alloys with trace TiB2 particles 含有痕量 TiB2 粒子的铝锌镁铜合金从均质铸造状态到退火异质结构的微观结构演变及力学性能

IF 7.6 2区材料科学

Materials & Design Pub Date : 2024-11-01 DOI: 10.1016/j.matdes.2024.113452

Dong Li , Yanfeng Han , Qing Dong , Jian Yang , Wei Zhao , Shusheng Lu , Jiao Zhang , Baode Sun

{"title":"Microstructure evolution from homogeneous as-cast state to annealed heterogeneous structure and mechanical properties of Al-Zn-Mg-Cu alloys with trace TiB2 particles","authors":"Dong Li , Yanfeng Han , Qing Dong , Jian Yang , Wei Zhao , Shusheng Lu , Jiao Zhang , Baode Sun","doi":"10.1016/j.matdes.2024.113452","DOIUrl":"10.1016/j.matdes.2024.113452","url":null,"abstract":"<div><div>Materials with a final heterogeneous structure (HS) possess an excellent combination of strength and ductility. However, fine and homogeneous grains are desired in as-cast ingots to avoid defects. The evolution from an as-cast homogeneous microstructure to a pronounced HS owing to the trace addition of TiB<sub>2</sub> particles was studied in Al-Zn-Mg-Cu alloys with traditional thermomechanical treatment. It is revealed that the triple junctions and over 2 μm precipitates co-located with TiB<sub>2</sub> enhance the particle-stimulated nucleation of recrystallization. The dislocation density difference between the recrystallized and recovered grains is further enhanced by cold rolling. A pronounced HS with alternating soft and hard domains accompanied by multimodal precipitates is modulated, realizing a synergy of yield strength as 632.4 MPa and elongation as 8.8%. It is confirmed that the HS, rather than precipitates, is the primary source of geometrically necessary dislocations (GNDs), leading to the synergy of strength and ductility. Atomistic simulations on the deformation behavior of HS were used to elucidate the strain partition and role of GNDs on mechanical properties. Our results provide a convenient route to fabricate heterogeneous Al-Zn-Mg-Cu alloy by trace addition of ceramic particles in ingots casting instead of elaborated controlling of deformation processing.</div></div>","PeriodicalId":383,"journal":{"name":"Materials & Design","volume":"247 ","pages":"Article 113452"},"PeriodicalIF":7.6,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142651827","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

Deformation mechanisms of AZ31 Mg alloy sheet assisted by electrical pulse- ultrasonic composite energy field 电脉冲-超声波复合能量场辅助 AZ31 镁合金薄板的变形机制

IF 7.6 2区材料科学

Materials & Design Pub Date : 2024-11-01 DOI: 10.1016/j.matdes.2024.113437

Haoran Zhang , Xingrong Chu , Chengxin Liu , Xuemei Sun , Shuxia Lin

{"title":"Deformation mechanisms of AZ31 Mg alloy sheet assisted by electrical pulse- ultrasonic composite energy field","authors":"Haoran Zhang , Xingrong Chu , Chengxin Liu , Xuemei Sun , Shuxia Lin","doi":"10.1016/j.matdes.2024.113437","DOIUrl":"10.1016/j.matdes.2024.113437","url":null,"abstract":"<div><div>Ultrasonic vibration and pulsed current can achieve energy concentration and effectively improve the forming ability of Magnesium alloy sheets. The uniaxial tensile tests of AZ31B sheets assisted by electric pulse, ultrasonic and electric pulse-ultrasonic composite energy fields were carried out, respectively. The influence of the effective current density and duration of the electric pulse on the softening, hardening and residual effects in the deformation process caused by the coupling action were explored. The electric pulse suppresses the promoting effect of ultrasonic vibration on twinning and together with ultrasonic vibration promotes dislocation slip to coordinate deformation. The composite energy field can thus further reduce the deformation resistance. The softening, secondary hardening and residual softening phenomena caused by the electric pulse-ultrasonic composite energy field become more and more significant with the prolongation of duration. When the ultrasonic field with a frequency of 21 kHz and an amplitude of 10 μm is combined with a frequency of 600 Hz and the effective current density increases from 0 to 30 A/mm<sup>2</sup>, the influence on the softening and secondary hardening process exhibits an initial increase followed by a decrease as the current density increases, while the influence on the residual softening shows the opposite trend.</div></div>","PeriodicalId":383,"journal":{"name":"Materials & Design","volume":"247 ","pages":"Article 113437"},"PeriodicalIF":7.6,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142651861","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

Enhanced strain mapping Unveils internal deformation dynamics in Silicon-based lithium-ion batteries during electrochemical cycling 增强应变绘图揭示了硅基锂离子电池在电化学循环过程中的内部变形动态

IF 7.6 2区材料科学

Materials & Design Pub Date : 2024-11-01 DOI: 10.1016/j.matdes.2024.113404

Bowen Wang , Kaiyuan Xue , Li Xi, Haosen Chen, Jiawei Wen, Chaojie Ma, Ying Li

{"title":"Enhanced strain mapping Unveils internal deformation dynamics in Silicon-based lithium-ion batteries during electrochemical cycling","authors":"Bowen Wang , Kaiyuan Xue , Li Xi, Haosen Chen, Jiawei Wen, Chaojie Ma, Ying Li","doi":"10.1016/j.matdes.2024.113404","DOIUrl":"10.1016/j.matdes.2024.113404","url":null,"abstract":"<div><div>Silicon-based anodes have emerged as a promising advancement in lithium-ion battery technology, offering significantly higher lithium storage capacities than traditional graphite. However, the volumetric expansion of silicon-anodes can swell by up to 300 % during lithiation-presents serious challenges to their structural integrity and electrochemical stability. This study investigates the internal structural dynamics of silicon anodes during lithiation and delithiation cycles. A novel cell design for a 18,650 cylindrical cell featuring micro-sized internal speckles within the silicon anode is presented. This design improves the simulation of electrochemical conditions and allows for precise displacement tracking, mitigating impacts on capacity and cycle performance while enhancing Digital Volume Correlation (DVC) analysis. The research prioritizes reducing scan time and radiation exposure in micro-CT assessments of Li-ion cells, and improves the accuracy of internal strain mapping via DVC. Displacement fields over three charging and discharging cycles are documented. Notably, uneven volumetric changes are observed, with local displacements reaching up to 35 µm in areas smaller than 2.5 mm in radius, which contracted during charging and expanded during discharging. This protocol offers insights into the relationship between electrode mechanics and cell performance, promoting non-destructive evaluations of internal structures in commercial cells.</div></div>","PeriodicalId":383,"journal":{"name":"Materials & Design","volume":"247 ","pages":"Article 113404"},"PeriodicalIF":7.6,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142553102","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