Article
Metallurgy & Metallurgical Engineering
A. Gungor, A. Incesu
Summary: The study found that the grain size of the alloy decreased significantly with increasing zinc content, leading to enhanced corrosion resistance. Hot rolled alloys exhibited higher tensile strength but lower ductility and toughness. The ZXM300-h alloy was identified to have the best mechanical properties and corrosion resistance, suitable for use as a biodegradable fracture bone plate material.
JOURNAL OF MAGNESIUM AND ALLOYS
(2021)
Article
Engineering, Manufacturing
Yanling Zhao, Yuan Jin, Yudong Bao
Summary: This study is based on the meso-damage theory and establishes a damage equation describing the porosity defects in the hot rolling process of Al-Si alloy sheets. By using a finite element model, the effect of different process parameters on the porosity defects and cracks are analyzed and validated through hot rolling tests. The optimized process parameters are determined.
PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART B-JOURNAL OF ENGINEERING MANUFACTURE
(2023)
Article
Engineering, Biomedical
Maria Watroba, Wiktor Bednarczyk, Jakub Kawalko, Piotr Bala
Summary: The study investigated the microstructure, crystallographic texture, phase composition, and mechanical properties of a Zn-3Ag-0.5Mg alloy processed through combined hot extrusion and cold rolling, followed by short-time heat treatment. It was found that controlling processing conditions and annealing temperature successfully addressed the brittleness issue in Zn alloys, with the most promising results obtained after 50% cold rolling reduction and 5 minutes of annealing.
BIOACTIVE MATERIALS
(2021)
Article
Chemistry, Physical
Andrzej Stefanik, Piotr Szota, Sebastian Mroz, Marcin Wachowski
Summary: This paper presents the theoretical and experimental research on obtaining round bars with a bimodal structure from AZ31 magnesium alloy using the radial shear rolling (RSR) process. The study shows that using more passes and smaller cross-section reductions in the RSR process can improve the structure of the obtained bars. This research is of great significance for understanding the processing properties of magnesium alloys.
Article
Materials Science, Multidisciplinary
Zhigang Xu, Honglin Zhang, Pavitra Krishnan, Christopher Hale, Laszlo J. Kecskes, Sergey Yarmolenko, Svitlana Fialkova, Qiuming Wei, Jagannathan Sankar
Summary: The study found that the grain size of Mg-6%Al and Mg-9%Al alloy plates was significantly refined after rolling, with the microstructure of plates processed by differential speed rolling (DSR) showing greater refinement compared to conventional rolling (CR) or confined rolling. The as-rolled plates exhibited a strong {0001} basal texture regardless of the rolling method used, with the basal texture intensity of DSR processed plates being lower than other rolling methods. Mechanical properties were significantly improved after rolling for both alloy compositions, with plates processed by DSR showing reduced anisotropy compared to plates processed by CR.
MECHANICS OF MATERIALS
(2022)
Article
Materials Science, Multidisciplinary
Guoxing Zheng, Lei Wang, Yufei Zhang, Dongrui Sun, Qingyou Dong
Summary: The microstructures and mechanical properties of a rolled Mg-3Al-3Nd-0.5Mn alloy were studied in this research. It was found that the rolling process successfully produced a mixed crystal structure in the alloy, due to the refinement of grains by Al2Nd, Al8Mn4Nd phases, and broken Al11Nd3. The precipitation of nano-sized Al8Mn4Nd during the rolling process also promoted the formation of a mixed crystal structure. Comparing the rolled alloys to the as-cast alloys, there was an increase in Yield Strength (YS) and Ultimate Tensile Strength (UTS) of 107.4 MPa and 48.4 MPa, respectively.
Article
Nanoscience & Nanotechnology
Jing Xu, Yanshuo Peng, Bo Guan, Yunchang Xin, Adrien Chapuis, Guangjie Huang, Qing Liu
Summary: Dual-phase Mg-Li alloys with different rolling paths were studied to investigate the effect of rolling path on microstructure, texture and mechanical anisotropy. The lamellar alpha+beta structures remained after ED-rolling and subsequent annealing, while disappeared after TD-rolling. The texture of beta phase was hardly affected by the rolling path. Annealing only reduced the maximum intensity of texture without changing the type of texture. VPSC simulations revealed that the activated deformation modes and alpha/beta phase boundaries played important roles in texture evolution. There was an obvious mechanical anisotropy after ED-rolling, which disappeared after TD-rolling.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2022)
Article
Engineering, Electrical & Electronic
Gabriela Vincze, Antonio B. Pereira, Diogo A. F. Lopes, Jesus M. Yanez, Marilena C. Butuc
Summary: Asymmetric rolling is a method to improve the performance of sheet metals. This study investigates the effect of asymmetric rolling on an aluminum alloy used in the automotive industry. The results show that all rolling conditions lead to increased strength and decreased formability. Adequate heat treatment after rolling can achieve a reasonable combination of high strength and acceptable formability.
Article
Metallurgy & Metallurgical Engineering
Jing Tian, Huihu Lu, Wanggang Zhang, Huihui Nie, Quanxin Shi, Jiafei Deng, Wei Liang, Lifei Wang
Summary: This paper proposes a new rolling process called width-limited rolling to suppress the edge crack of magnesium alloy sheet. By limiting the width of the alloy sheet and forming a compressive stress field during rolling, the generation of edge cracks is reduced. Experimental results show that width-limited rolling can effectively suppress the formation of edge cracks and improve the mechanical properties of the sheet.
JOURNAL OF MAGNESIUM AND ALLOYS
(2022)
Article
Nanoscience & Nanotechnology
Yun Zhang, Haitao Jiang, Shihong Wang, Yujiao Wang, Shiwei Tian, Hongtao Lin, Guihua Zhang, Yonggang Yang, Zhe Xu
Summary: This study successfully improved the strength and formability of Mg-2Zn alloy sheets through alloy addition and TRC process, achieving a balanced relationship between strength and formability in magnesium composition systems, and obtaining good economic benefits.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2021)
Article
Materials Science, Multidisciplinary
Anderson Thadeu Nunes, Guilherme Lisboa de Gouveia, Jose Eduardo Spinelli
Summary: This study investigates the influence of cooling rates on the phase morphology and tensile properties of ternary Al-Mg-Sc alloys. It was found that higher amounts of Mg result in higher solidification rates and the formation of a variety of microstructures. Among the alloys studied, the Al-5 wt% Mg-Sc alloy exhibited superior tensile strength due to the predominance of cells and thinner primary dendrites trunks forming its microstructure.
MATERIALS CHARACTERIZATION
(2023)
Article
Materials Science, Multidisciplinary
B. Q. Shi, Y. Z. Wang, X. L. Shang, L. Y. Zhao, C. Q. Li, D. C. Chen, B. H. Nie, R. S. Chen, W. Ke
Summary: This study investigates the microstructure evolution and texture development of a RE-containing Mg alloy during hot rolling, aiming to understand the formation of shear bands and their correlation with macro-texture characteristics. The results reveal the roles of different types of twins/variants and dislocation mechanisms in shear band formation, and provide insights into the influence of these factors on the texture development.
MATERIALS CHARACTERIZATION
(2022)
Article
Engineering, Mechanical
Li-Zhu Jin, Chang-Yu Zhou, Qi Pei, Yong-Sheng Fan, Le Chang, Xiao-Hua He
Summary: Crack sizes, geometrical configurations of specimens and structures, and loading conditions play a significant role in in-plane and out-of-plane constraint effects. Safety assessments with these constraint effects can significantly improve accuracy. The influence of biaxial compressive loading on fracture analysis with constraint effects is worth paying attention to, especially considering the significant impact of lambda on SIF, T-11, and T-33.
THEORETICAL AND APPLIED FRACTURE MECHANICS
(2022)
Article
Materials Science, Multidisciplinary
Z. H. Li, D. Cheng, K. Wang, E. R. Hoglund, J. M. Howe, B. C. Zhouc, T. T. Sasaki, T. Ohkubo, K. Hono
Summary: This study investigated the precipitation process of a Mg-0.3Ca-0.6Zn alloy during isothermal aging at 200 degrees C using advanced microscopy techniques and first-principles calculations. The results revealed the formation of monolayer G.P. zones, which transformed into tri-atomic layer η'' and η' plates. The η' plates then formed pairs and stacks with pure magnesium layers. The unique structure of coarse η1 plates led to a different precipitate microstructure evolution from other Mg-RE-Zn alloys. First-principles calculations confirmed the crystal structure and stability of the precipitates, supporting a new precipitation sequence.
Article
Chemistry, Physical
Seong-Eum Lee, Min-Seong Kim, Young-Wook Chae, Hwanuk Guim, Jaiveer Singh, Shi-Hoon Choi
Summary: The study investigated the effect of intermediate heat treatment on the texture evolution and stretch formability of annealed AZ31 Mg alloy sheets during different stages of hot rolling. The results showed that IHT significantly influenced the mechanical properties and Erichsen Index of the annealed sheets, with the influence being dependent on the measurement temperature.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Engineering, Mechanical
Rosaria Del Toro, Maria Laura De Bellis, Marcello Vasta, Andrea Bacigalupo
Summary: This article presents a multifield asymptotic homogenization scheme for analyzing Bloch wave propagation in non-standard thermoelastic periodic materials. The proposed method derives microscale field equations, solves recursive differential problems within the unit cell, establishes a down-scaling relation, and obtains average field equations. The effectiveness of this approach is validated by comparing dispersion curves with those from the Floquet-Bloch theory.
INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES
(2024)
Article
Engineering, Mechanical
Yue Bao, Zhengcheng Yao, Yue Zhang, Xueman Hu, Xiandong Liu, Yingchun Shan, Tian He
Summary: This paper proposes a novel triple-gradient phononic acoustic black hole (ABH) beam that strategically manipulates multiple gradients to enhance its performance. The study reveals that the ABH effect is not solely brought about by the thickness gradient, but also extends to the power-law gradients in density and modulus. The synergistic development of three different gradient effects leads to more pronounced and broader bandgaps in PCs.
INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES
(2024)
Article
Engineering, Mechanical
Matthias Ryser, Jason Steffen, Bekim Berisha, Markus Bambach
Summary: This study investigates the feasibility of replacing complex experiments with multiple simpler ones to determine the anisotropic yielding behavior of sheet metal. The results show that parameter identifiability and accuracy can be achieved by combining multiple specimen geometries and orientations, enhancing the understanding of the yield behavior.
INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES
(2024)
Article
Engineering, Mechanical
Wenjun Li, Pengfei Zhang, Siyong Yang, Shenling Cai, Kai Feng
Summary: This study presents a novel two-dimensional non-contact platform based on Near-field Acoustic Levitation (NFAL), which can realize both one-dimensional and two-dimensional transportation. Numerical and experimental results prove the feasibility and ease of this method.
INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES
(2024)
Article
Engineering, Mechanical
Shuo Liu, Lu Che, Guodong Fang, Jun Liang
Summary: This study presents a novel lamina conjugated bond-based peridynamic (BB-PD) model that overcomes the limitations of material properties and is applicable to composite laminates with different stacking sequences. The accuracy and applicability of the model are validated through simulations of elastic deformation and progressive damage behavior, providing an explanation of the damage modes and failure mechanisms of laminated composite materials subjected to uniaxial loading.
INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES
(2024)
Article
Engineering, Mechanical
Omar El-Khatib, S. Kumar, Wesley J. Cantwell, Andreas Schiffer
Summary: Sandwich-structured honeycombs (SSHCs) are hierarchical structures with enhanced mass-specific properties. A model capable of predicting the elastic properties of hexagonal SSHCs is presented, showing superior in-plane elastic and shear moduli compared to traditional honeycombs, while the out-of-plane shear moduli are reduced.
INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES
(2024)
Article
Engineering, Mechanical
Zhi-Jian Li, Hong-Liang Dai, Yuan Yao, Jing-Ling Liu
Summary: This paper proposes a process-performance prediction model for estimating the yield strength and ultimate tensile strength of metallic parts fabricated by powder bed fusion additive manufacturing. The effect of main process variables on the mechanical performance of printed metallic parts is analyzed and the results can serve as a guideline for improvement. The accuracy of the proposed model is validated by comparison with literature.
INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES
(2024)
Article
Engineering, Mechanical
Saman A. Bapir, Kawa M. A. Manmi, Rostam K. Saeed, Abdolrahman Dadvand
Summary: This study numerically investigates the behavior of an ultrasonically driven gas bubble between two parallel rigid circular walls with a cylindrical micro-indentation in one wall. The primary objective is to determine the conditions that facilitate the removal of particulate contamination from the indentation using the bubble jet. The study found that the bubble jet can effectively remove contamination from the indentation for certain ranges of indentation diameter, but becomes less effective for larger indentation diameters.
INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES
(2024)
Article
Engineering, Mechanical
E. Polyzos, E. Vereroudakis, S. Malefaki, D. Vlassopoulos, D. Van Hemelrijck, L. Pyl
Summary: This research investigates the elastic and damage characteristics of individual composite beads used in 3D printed composites. A new analytical probabilistic progressive damage model (PPDM) is introduced to capture the elastic and damage attributes of these beads. Experimental results show strong agreement with the model in terms of elastic behavior and ultimate strength and strain.
INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES
(2024)