Journal of Magnesium and Alloys最新文献_第9页

Phase-field modeling for anisotropic ductile damage of magnesium alloys at finite deformations 镁合金有限变形时各向异性韧性损伤的相场模拟

IF 15.8 1区材料科学

Journal of Magnesium and Alloys Pub Date : 2024-07-01 DOI: 10.1016/j.jma.2022.11.015

{"title":"Phase-field modeling for anisotropic ductile damage of magnesium alloys at finite deformations","authors":"","doi":"10.1016/j.jma.2022.11.015","DOIUrl":"10.1016/j.jma.2022.11.015","url":null,"abstract":"<div><p>The damage anisotropy of an extruded ZK60 Mg alloy is characterized using tensile tests and scanning electronic microscopy. The accumulation of anisotropic deformations leads to the great differences of the dimple evolution and strains at fracture along different loading directions. To introduce the anisotropic deformation information into the damage constitutive relationship, a thermodynamically consistent phase-field model of ductile damage fully coupled with elastoplastic finite deformations is developed in this study. Using the user-defined constitutive relationship and displacement-temperature coupling element, the finite element simulations are conducted. The results show that: (1) ZK60 Mg alloys presents clear <em>R</em>-value difference in 0°, 45°, and 90° tests of intact specimens. The 45° test possesses the greatest <em>R</em>-value (1.50) and the greatest strain at fracture, however, the <em>R</em>-value for 0° is less than 1, indicating the thinning is preferential. (2) The higher ultimate stress leads to a larger average dimension of the dimples, whereas the higher density correlates with a larger elongation ratio at the fracture. The disappearance of the stress-bearing area indicates that the phase-field assumption on stress degradation is completely compatible with the dimple analysis on fractography. (3) The simulation results of the stress-strain relationships and damage paths correlate well with the experimental ductile damage of magnesium alloys at 200 ℃. Slight errors are basically attributed to the modeling parameters and finite element iteration algorithm. The proposed model presents fine applicability and reliability for the predictions of plastic deformations, ductile damage, and fracture of anisotropic Mg alloys.</p></div>","PeriodicalId":16214,"journal":{"name":"Journal of Magnesium and Alloys","volume":null,"pages":null},"PeriodicalIF":15.8,"publicationDate":"2024-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2213956722003085/pdfft?md5=d670fb882b7b445408ebe80c71fa3253&pid=1-s2.0-S2213956722003085-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43611437","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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

Achieving high ductility and low in-plane anisotropy in magnesium alloy through a novel texture design strategy 通过一种新的织构设计策略实现镁合金的高延展性和低面内各向异性

IF 15.8 1区材料科学

Journal of Magnesium and Alloys Pub Date : 2024-07-01 DOI: 10.1016/j.jma.2023.01.017

{"title":"Achieving high ductility and low in-plane anisotropy in magnesium alloy through a novel texture design strategy","authors":"","doi":"10.1016/j.jma.2023.01.017","DOIUrl":"10.1016/j.jma.2023.01.017","url":null,"abstract":"<div><p>Texture regulation is a prominent method to modify the mechanical properties and anisotropy of magnesium alloy. In this work, the Mg-1Al-0.3Ca-0.5Mn-0.2Gd (wt.%) alloy sheet with TD-tilted and circular texture was fabricated by unidirectional rolling (UR) and multidirectional rolling (MR) method, respectively. Unlike generating a strong in-plane mechanical anisotropy in conventional TD-tilted texture, the novel circular texture sample possessed a weak in-plane yield anisotropy. This can be rationalized by the similar proportion of soft grains with favorable orientation for basal <a> slip and {10<span><math><mover><mn>1</mn><mo>¯</mo></mover></math></span>2} tensile twinning during the uniaxial tension of circular-texture sample along different directions. Moreover, compared with the TD-tilted texture, the circular texture improved the elongation to failure both along the rolling direction (RD) and transverse direction (TD). By quasi-in-situ EBSD-assisted slip trace analysis, higher activation of basal slip was observed in the circular-texture sample during RD tension, contributing to its excellent ductility. When loading along the TD, the TD-tilted texture promoted the activation of {10<span><math><mover><mn>1</mn><mo>¯</mo></mover></math></span>2} tensile twins significantly, thus providing nucleation sites for cracks and deteriorating the ductility. This research may shed new insights into the development of formable and ductile Mg alloy sheets by texture modification.</p></div>","PeriodicalId":16214,"journal":{"name":"Journal of Magnesium and Alloys","volume":null,"pages":null},"PeriodicalIF":15.8,"publicationDate":"2024-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2213956723000324/pdfft?md5=98422adacbe083c77ce27a45b6cd714b&pid=1-s2.0-S2213956723000324-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45029195","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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

Simultaneously enhanced thermal conductivity and mechanical performance of carbon nanotube reinforced ZK61 matrix composite 同时提高了碳纳米管增强ZK61基复合材料的导热性和力学性能

IF 15.8 1区材料科学

Journal of Magnesium and Alloys Pub Date : 2024-07-01 DOI: 10.1016/j.jma.2023.01.011

{"title":"Simultaneously enhanced thermal conductivity and mechanical performance of carbon nanotube reinforced ZK61 matrix composite","authors":"","doi":"10.1016/j.jma.2023.01.011","DOIUrl":"10.1016/j.jma.2023.01.011","url":null,"abstract":"<div><p>Alloying seriously deteriorates the thermal conductivity of magnesium (Mg) alloys, thus, restricts their applications in the fields of computer, communication, and consumer products. In order to improve the thermal conductivity of Mg alloys, adding carbon nanotube (CNT) combined with aging treatment is proposed in this work, i.e. fabricating the D-CNT (a kind of dispersed CNT) reinforced ZK61 matrix composite via powder metallurgy, and conducting aging treatment to the composite. Results indicate the as-aged ZK61/0.6 wt.% D-CNT composite achieved an excellent thermal conductivity of 166 W/(mK), exhibiting 52.3% enhancement in comparison with matrix, as well as tensile yield strength of 321 MPa, ultimate tensile strength of 354 of MPa, and elongation of 14%. The simultaneously enhanced thermal conductivity and mechanical performance are mainly attributed to: (1) the embedded interface of the D-CNT with matrix and (2) the coherent interface of precipitates with matrix. It is expected the current work can provide a clue for devising Mg matrix composites with integrated structural and functional performances, and enlarge the current restricted applications of Mg alloys.</p></div>","PeriodicalId":16214,"journal":{"name":"Journal of Magnesium and Alloys","volume":null,"pages":null},"PeriodicalIF":15.8,"publicationDate":"2024-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2213956723000385/pdfft?md5=ee8eec476b728fceedba9718662f1651&pid=1-s2.0-S2213956723000385-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46313217","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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 theoretical and mechanism of CaF₂-catalyzed vacuum carbothermal reduction of MgO CaF₂ 催化真空碳热还原氧化镁的理论和机理研究

IF 15.8 1区材料科学

Journal of Magnesium and Alloys Pub Date : 2024-07-01 DOI: 10.1016/j.jma.2024.06.020

T. Ma, Bin Yang, Yang Tian, Neng Xiong, Baoqiang Xu, Guo-zheng Zha, Rong Yu, Dong Liang, Lipeng Wang, Dong Wang

引用次数: 0

Enhancing comigration-ability of Mg2Sn particles with Mg matrix via interphase segregation of Zn 通过锌的相间偏析提高 Mg2Sn 颗粒与镁基体的结合力

IF 15.8 1区材料科学

Journal of Magnesium and Alloys Pub Date : 2024-07-01 DOI: 10.1016/j.jma.2024.06.006

R. Wang, C. F. Fang, J. Chen, A. Liu, C.J. Li, S.B. Mi, M. Yao, Y.M. Wang

引用次数: 0

Enhancing constitutive description and workability characterization of Mg alloy during hot deformation using machine learning-based Arrhenius-type model 利用基于机器学习的阿伦尼乌斯模型加强热变形过程中镁合金的成分描述和加工性表征

IF 15.8 1区材料科学

Journal of Magnesium and Alloys Pub Date : 2024-07-01 DOI: 10.1016/j.jma.2024.01.011

{"title":"Enhancing constitutive description and workability characterization of Mg alloy during hot deformation using machine learning-based Arrhenius-type model","authors":"","doi":"10.1016/j.jma.2024.01.011","DOIUrl":"10.1016/j.jma.2024.01.011","url":null,"abstract":"<div><p>Hot deformation is a commonly employed processing technique to enhance the ductility and workability of Mg alloy. However, the hot deformation of Mg alloy is highly sensitive to factors such as temperature, strain rate, and strain, leading to complex flow behavior and an exceptionally narrow processing window for Mg alloy. To overcome the shortcomings of the conventional Arrhenius-type (AT) model, this study developed machine learning-based Arrhenius-type (ML-AT) models by combining the genetic algorithm (GA), particle swarm optimization (PSO), and artificial neural network (ANN). Results indicated that when describing the flow behavior of the AQ80 alloy, the PSO-ANN-AT model demonstrates the most prominent prediction accuracy and generalization ability among all ML-AT and AT models. Moreover, an activation energy-processing (AEP) map was established using the reconstructed flow stress and activation energy fields based on the PSO-ANN-AT model. Experimental validations revealed that this AEP map exhibits superior predictive capability for microstructure evolution compared to the one established by the traditional interpolation methods, ultimately contributing to the precise determination of the optimum processing window. These findings provide fresh insights into the accurate constitutive description and workability characterization of Mg alloy during hot deformation.</p></div>","PeriodicalId":16214,"journal":{"name":"Journal of Magnesium and Alloys","volume":null,"pages":null},"PeriodicalIF":15.8,"publicationDate":"2024-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2213956724000252/pdfft?md5=5c6d5ec98e130caba5b471dfeeee43b6&pid=1-s2.0-S2213956724000252-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139550621","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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

The immunomodulatory effects and mechanisms of magnesium-containing implants in bone regeneration: A review 含镁植入物在骨再生中的免疫调节作用和机制：综述

IF 15.8 1区材料科学

Journal of Magnesium and Alloys Pub Date : 2024-07-01 DOI: 10.1016/j.jma.2024.05.011

{"title":"The immunomodulatory effects and mechanisms of magnesium-containing implants in bone regeneration: A review","authors":"","doi":"10.1016/j.jma.2024.05.011","DOIUrl":"10.1016/j.jma.2024.05.011","url":null,"abstract":"<div><p>Traditional designs and developments of bone biomaterials mostly concentrate on the positive regulation of osteoblast lineage cells, but often ignore the importance of immune responses and the equilibrium between bone resorption mediated by osteoclasts and bone formation mediated by osteoblasts. Immune dysregulation is associated with an imbalance between pro-inflammatory and anti-inflammatory processes, which may influence the efficacy of bone therapy. Therefore, implanted biomaterials should appropriately and precisely modulate subsequent immune responses. Magnesium (Mg) has been used to fabricate various Mg alloys for bone repair because of its favorable attributes such as osteogenic potential, immune regulation characteristics, biodegradability, and biocompatibility. Various basic research and clinical trials have been already conducted in many countries to explore the physical properties of Mg-containing implants and their clinical outcomes in bone fracture and defect repair. Therefore, this review summarizes the immune response to Mg-containing implants, and further organizes the current research and development progress of Mg-containing implants. The review aims to offer an overview of the current knowledge on immunomodulation of Mg-containing implants and future challenges in their clinical application, which could provide further insight in the development of better strategies for the treatment of bone defect and fracture.</p></div>","PeriodicalId":16214,"journal":{"name":"Journal of Magnesium and Alloys","volume":null,"pages":null},"PeriodicalIF":15.8,"publicationDate":"2024-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2213956724001853/pdfft?md5=5e349d8b0171b797a454a6e365938073&pid=1-s2.0-S2213956724001853-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141569994","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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

Advantages of rapid solidification over casting of Mg-0.4Zn-1Y alloy 快速凝固比铸造 Mg-0.4Zn-1Y 合金的优势

IF 15.8 1区材料科学

Journal of Magnesium and Alloys Pub Date : 2024-07-01 DOI: 10.1016/j.jma.2024.06.024

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Improvement of corrosion resistance of PEO coated dissimilar Ti/Mg0.6Ca couple 提高 PEO 涂层异种 Ti/Mg0.6Ca 对偶的耐腐蚀性能

IF 15.8 1区材料科学

Journal of Magnesium and Alloys Pub Date : 2024-07-01 DOI: 10.1016/j.jma.2024.06.009

{"title":"Improvement of corrosion resistance of PEO coated dissimilar Ti/Mg0.6Ca couple","authors":"","doi":"10.1016/j.jma.2024.06.009","DOIUrl":"10.1016/j.jma.2024.06.009","url":null,"abstract":"<div><p>With the growing demand for weight reduction, the application of joint lightweight structural materials is increasing. Magnesium alloys feature low density, high specific strength and good formability, offering significant advantages for fuel efficiency and load capacity. Combined with Ti, a dissimilar Ti/Mg composite material provides great flexibility combining the properties of each material. However, because of the great differences in chemical and electrochemical properties between Mg and Ti, it is imperative to address the galvanic corrosion problem of such dissimilar Ti/Mg components. This work presents an investigation of the PEO processing of sintered Ti/Mg0.6Ca couples, aiming to improve the corrosion resistance of such dissimilar alloy combinations using a phosphate-aluminate electrolyte. The results show that uniform and continuous coatings can be formed on the dissimilar Ti/Mg0.6Ca couple. The coating mainly contains MgO and MgAl<sub>2</sub>O<sub>4</sub> on the Mg0.6Ca side, and Al<sub>2</sub>TiO<sub>5</sub> is the dominant phase on the Ti side. The work also took advantage of synchrotron X-ray computed tomography (CT) scanning to achieve 3D reconstruction of the coating morphology, which can be a fast method to assess the porosity and compactness of the coating and further predict the coating corrosion resistance. The coating effectively improved the corrosion resistance of the dissimilar Ti/Mg0.6Ca couple.</p></div>","PeriodicalId":16214,"journal":{"name":"Journal of Magnesium and Alloys","volume":null,"pages":null},"PeriodicalIF":15.8,"publicationDate":"2024-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2213956724002135/pdfft?md5=9bd60c5b2c836a706f4af40f9c9b12b6&pid=1-s2.0-S2213956724002135-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141701581","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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

Smart gradient coating suitable for bone growth prepared on plasma-electrolytically oxidised Mg and its sequential degradation behaviour 等离子电解氧化镁制备的适合骨生长的智能梯度涂层及其连续降解行为

IF 15.8 1区材料科学

Journal of Magnesium and Alloys Pub Date : 2024-06-28 DOI: 10.1016/j.jma.2024.05.026

Jiaping Han, Kai Fu, Mikhail. L. Zheludkevich

引用次数: 0