Article
Engineering, Mechanical
Huamiao Wang, Xiaodan Zhang, Wei Wu, Peter K. Liaw, Ke An, Qin Yu, Peidong Wu
Summary: Extensive attention has been given to magnesium (Mg) alloys as potential lightweight structural materials. However, the processing and manufacturing of Mg materials with high strength and good ductility remain challenging. This is mainly due to a lack of understanding of the anisotropic mechanical behavior of Mg alloys under multiaxial stress states. In this study, the torsional and coupled torsion-tension/compression behaviors of a magnesium alloy subjected to large-strain deformation were investigated. Experimental validation was conducted and a model was proposed to capture the complex behavior of Mg alloys under different loading conditions. The findings of this study provide insights for designing and optimizing the properties of Mg alloys.
INTERNATIONAL JOURNAL OF PLASTICITY
(2022)
Article
Nanoscience & Nanotechnology
Xiaoqian Guo, Chao Ma, Lingyu Zhao, Adrien Chapuis, Qing Liu, Peidong Wu
Summary: Wrought magnesium and Mg alloys exhibit strong basal texture and various slip and twin modes at room temperature, which interact with each other and are modeled empirically via latent hardening coupling coefficients. The activation of {1012} tension twinning can lead to severe mechanical anisotropy and texture change, influenced by slip-induced dislocations. Experiments and simulations show that latent hardening by slip modes for {1012} twinning is much less than self-hardening.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2021)
Article
Engineering, Mechanical
Xiaodan Zhang, Shangming Li, Xiaoqian Guo, Huamiao Wang, Qin Yu, Peidong Wu
Summary: In this study, an elastic visco-plastic self-consistent model with twinning and detwinning scheme, along with a torsion specific finite element approach, is used to simulate the deformation behavior of magnesium alloy solid rod with different initial textures. It was found that the deformation mechanisms, stress-strain response, Swift effect, and deformation texture vary significantly with different initial textures and loading paths, highlighting the importance of understanding the influence of these factors on mechanical properties.
INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES
(2021)
Article
Metallurgy & Metallurgical Engineering
Xianyun Zhu, Yuqian Wang, Luiz Carneiro, Huamiao Wang, Yanyao Jiang
Summary: Comprehensive experiments were conducted on a rolled AZ31B Mg thick plate and a tubular specimen to evaluate the elastic-viscoplastic self-consistent model with twinning and detwinning (EVPSC-TDT) on magnesium alloys. The model accurately predicted stress-strain curves, hardening rates, textures after fracture, and tension twin evolutions for different loading conditions. The experiment also observed the Swift effect, which was properly simulated by the model.
JOURNAL OF MAGNESIUM AND ALLOYS
(2023)
Article
Metallurgy & Metallurgical Engineering
Weiqin Tang, Jeong Yeon Lee, Huamiao Wang, Dirk Steglich, Dayong Li, Yinghong Peng, Peidong Wu
Summary: The unloading behaviors of the rare-earth magnesium alloy ZE10 sheet were studied using mechanical tests and crystal plasticity modeling. The study found significant anisotropy and loading path dependency in the unloading behaviors of ZE10 sheets. Inelastic strains varied under different loading conditions, with basal slip, twinning, and de-twinning being responsible for the behaviors.
JOURNAL OF MAGNESIUM AND ALLOYS
(2021)
Article
Nanoscience & Nanotechnology
Karol Frydrych, Tomasz Libura, Zbigniew Kowalewski, Michal Maj, Katarzyna Kowalczyk-Gajewska
Summary: The paper presents an experimental and numerical study on the deformation mechanisms in the AZ31B magnesium alloy sheet under cyclic in-plane tensile-compressive deformation, focusing on the influence of slip, twinning, and detwinning on mechanical response and texture evolution. A crystal plasticity model accounting for twinning and detwinning is formulated and identified using an evolutionary algorithm, with discussion on the predicted activity of deformation mechanisms in relation to experimental data.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2021)
Article
Materials Science, Multidisciplinary
Qichang He, Xiaodan Zhang, Hua Qiao, Huamiao Wang, Peidong Wu
Summary: Experimental observations suggest that pre-deformation can affect the mechanical properties of magnesium alloys, with annealing after pre-deformation leading to enhanced mechanical properties. Pre-compression with about 3% strain and annealing are found to have the greatest impact on the overall mechanical properties of rolled Mg alloy sheets. Different pre-straining paths and loading directions, as well as the presence of annealing, can result in varying effects on the properties of magnesium alloys.
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
(2021)
Article
Materials Science, Multidisciplinary
Filip Siska, Ludek Stratil, Jan Cizek, Tingting Guo, Matthew Barnett
Summary: This paper investigates the interactions between {10 (1) over bar2} ten sile twin and precipitates aligned along basal planes in magnesium alloys. The results show that precipitates influence the shear stress necessary to accommodate twins, and the thickness of precipitates plays a crucial role in twin thickening and propagation.
Article
Metallurgy & Metallurgical Engineering
H. Wang, X. Sun, S. Kurukuri, M. J. Worswick, D. Y. Li, Y. H. Peng, P. D. Wu
Summary: Manufacturers have developed magnesium alloys with remarkable properties by adding rare-earth elements to overcome the limitation in formability at room temperature. The rare-earth magnesium alloys behave differently from conventional alloys, especially in terms of their anisotropic and strain rate sensitive behavior. This study investigates the behavior of a rare-earth Mg alloy ZEK100 sheet at room temperature using an elastic viscoplastic self-consistent polycrystal plasticity model. Different strain rate sensitivities are employed by the model to simulate the strain rate sensitive behaviors under different loading directions and rates. The study highlights the importance of using different strain rate sensitivities for each deformation mode in hexagonal close-packed metals.
JOURNAL OF MAGNESIUM AND ALLOYS
(2023)
Article
Materials Science, Multidisciplinary
Hua Qiao, Yao Cheng, Yuanjie Fu, Yunchang Xin, Gang Chen, Peidong Wu
Summary: In this study, the deformation behavior of a Mg alloy AZ31 plate under biaxial tension in the RD-TD and ND-TD planes was systematically investigated using the EVPSC-TDT model. The predicted stress-strain curves, texture evolutions, and plastic work contours were in good agreement with the experimental results. The relative activities of different deformation modes were discussed to interpret the plastic response.
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
(2023)
Article
Materials Science, Multidisciplinary
Jose Calaf-Chica, Jorge Martinez-Pena, Pedro Miguel Bravo Diez, Monica Preciado Calzada
Summary: The tubes and pipes manufacturing industry lacks quantitative testing methods for estimating the mechanical properties of their products. Efforts have been made to design alternative mechanical testing procedures, such as the Ring Hoop Tension Test (RHTT), for characterizing the mechanical properties in the hoop direction of pipes and tubes. This study presents a novel RHTT method that overcomes the limitations of existing tests, and a numerical FEM analysis was performed to optimize the estimation method for the yield strength of anisotropic tubes and pipes. Experimental tests and metallographic analysis showed the capability of the optimized RHTT to accurately estimate the yield strength in the hoop direction.
MECHANICS OF MATERIALS
(2022)
Article
Materials Science, Multidisciplinary
Konstantin D. Molodov, Talal Al-Samman, Dmitri A. Molodov
Summary: Single crystals of pure Mg and Mg-0.8 wt% Gd alloy were compressed at room and elevated temperatures to study the activation of prismatic and pyramidal (c+a) slip. The addition of Gd did not increase (c+a) slip activity, but had a significant impact on continuous dynamic recrystallization in Mg-Gd alloy. The improved formability in polycrystalline Mg-Gd alloys is mainly attributed to changes in recrystallization behavior and its effect on texture.
Article
Nanoscience & Nanotechnology
Qizhen Li
Summary: The study investigated the effect of testing temperature on mechanical properties and deformation mechanisms of fine-grained magnesium samples through tensile testing. The results show that both mechanical properties and deformation mechanisms were significantly affected by the variation of testing temperature, with strength increasing linearly and ductility decreasing linearly with decreasing temperature. The dominating deformation mechanism shifted from tensile twinning at room temperature to negligible twinning and primary dislocation operation at subfreezing temperatures.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2021)
Article
Engineering, Mechanical
Ding Tang, Kecheng Zhou, Weiqin Tang, Peidong Wu, Huamiao Wang
Summary: This study investigates the bending behavior of magnesium (Mg) alloys through four-point bending tests and various measurement techniques. The research reveals the inhomogeneous and anisotropic mechanical response of Mg alloys under bending, and proposes a crystal plasticity-based approach to describe their deformation behavior. The insights from this study offer new possibilities for designing and controlling gradient twinning structures to optimize the properties of Mg alloys.
INTERNATIONAL JOURNAL OF PLASTICITY
(2022)
Article
Materials Science, Multidisciplinary
Konstantin D. Molodov, Talal Al-Samman, Dmitri A. Molodov
Summary: This study provides an overview of the mechanical response and microstructure evolution of pure magnesium single crystals under plane strain compression at room temperature. The deformation behavior varies depending on the crystal orientations, with different activation of slip and twinning mechanisms. The presence of high angle grain boundaries and certain twin boundaries is crucial for the activation of contraction twinning. Two-stage work hardening is observed in crystals aligned for basal slip, with the second stage attributed to microstructural changes.
Article
Engineering, Mechanical
Tao Tang, Guowei Zhou, Zihan Li, Dayong Li, Liming Peng, Yinghong Peng, Peidong Wu, Huamiao Wang, Myoung-Gyu Lee
INTERNATIONAL JOURNAL OF PLASTICITY
(2019)
Article
Nanoscience & Nanotechnology
X. Q. Guo, C. Ma, H. Wang, X. B. Mao, P. D. Wu
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2019)
Article
Chemistry, Physical
Ding Tang, Wenli Fang, Xiaohui Fan, Tianxia Zou, Zihan Li, Huamiao Wang, Dayong Li, Yinghong Peng, Peidong Wu
Article
Chemistry, Physical
Bo Zhang, Shuangming Li, Huamiao Wang, Weiqin Tang, Yaodong Jiang, Peidong Wu
Article
Nanoscience & Nanotechnology
Yanxiang Liang, Xiaofang Yang, Mingyu Gong, Guisen Liu, Qing Liu, Jian Wang
SCRIPTA MATERIALIA
(2019)
Article
Materials Science, Multidisciplinary
Huamiao Wang, Shuangming Li, Dayong Li, Gwenaelle Proust, Yixiang Gan, Kun Yan, Ding Tang, Peidong Wu, Yinghong Peng
Article
Engineering, Industrial
Wenli Fang, Ding Tang, Huamiao Wang, Dayong Li, Yinghong Peng
JOURNAL OF MATERIALS PROCESSING TECHNOLOGY
(2020)
Article
Nanoscience & Nanotechnology
Huai Wang, Soo Yeol Lee, Huamiao Wang, Wanchuck Woo, E-Wen Huang, Jayant Jain, Ke An
SCRIPTA MATERIALIA
(2020)
Article
Metallurgy & Metallurgical Engineering
Weiqin Tang, Jeong Yeon Lee, Huamiao Wang, Dirk Steglich, Dayong Li, Yinghong Peng, Peidong Wu
Summary: The unloading behaviors of the rare-earth magnesium alloy ZE10 sheet were studied using mechanical tests and crystal plasticity modeling. The study found significant anisotropy and loading path dependency in the unloading behaviors of ZE10 sheets. Inelastic strains varied under different loading conditions, with basal slip, twinning, and de-twinning being responsible for the behaviors.
JOURNAL OF MAGNESIUM AND ALLOYS
(2021)
Correction
Materials Science, Multidisciplinary
Xiaochuan Sun, Bo Zhang, Yaodong Jiang, Peidong Wu, Huamiao Wang
Article
Materials Science, Multidisciplinary
Xiaochuan Sun, Bo Zhang, Yaodong Jiang, Peidong Wu, Huamiao Wang
Summary: This study proposed an efficient method to partition parameters into different groups to reduce the time cost of automatic parameter calibration. Applying this method to calibrate mechanical behavior parameters of rare-earth magnesium alloys successfully reproduced mechanical behavior and textural evolution.
Article
Mechanics
Leilei Zhao, Kecheng Zhou, Ding Tang, Huamiao Wang, Peidong Wu, Dayong Li, Yinghong Peng
Summary: This study investigates the importance of size effect in designing and manufacturing engineering components at microscale with complex loading conditions. A proposed extended model that considers both grain size and strain gradient effects has been applied to finite element method simulation. Results show that hollow structures can improve the bearing capacity of micro-wires, and the bearing capacity differs among micro-wires with different cross-sections. Additionally, complex loading conditions have an important influence on stress distribution.
INTERNATIONAL JOURNAL OF APPLIED MECHANICS
(2022)
Article
Chemistry, Physical
Leilei Zhao, Kecheng Zhou, Ding Tang, Huamiao Wang, Dayong Li, Yinghong Peng
Summary: This study investigates the friction and wear performances of three typical extrusion die materials in the hot extrusion process. The results show that the coefficients of friction of CVD coatings and H13 hot work tool steel specimens were smaller under the hot extrusion condition. The wear mechanisms of H13, YG8, and CVD coatings at 500 degrees C are adhesion, abrasive, and fatigue, respectively.
Article
Nanoscience & Nanotechnology
Guodong Hou, Xu Zhang, Feihong Du, Yadong Wu, Xing Zhang, Zhijie Lei, Wei Lu, Feiyu Zhang, Guang Yang, Huamiao Wang, Zhenyu Liu, Rong Wang, Qi Ge, Jiangping Chen, Guang Meng, Nicholas X. X. Fang, Xiaoshi Qian
Summary: An untethered phototactic soft machine composed of poly(N-isopropylacrylamide) hydrogel blended with graphene oxide and gold nanoparticles can follow the directions of photonic illumination and maneuver through obstacles underwater. This ability is achieved by manipulating photothermal nanoparticles and the polymeric matrix, enabling complex self-regulative behaviors.
NATURE NANOTECHNOLOGY
(2023)
Article
Chemistry, Physical
Xianyun Zhu, Huamiao Wang, Yunxin Wu
Summary: Thermal stress induced by thermal anisotropy in single crystals during heat treatments was examined using a thermal elastic viscoplastic self-consistent model. The study found that constrained cooling significantly increases elastic lattice strain, while polycrystals offer more deformation mechanisms to accommodate thermal anisotropy, resulting in lower applied stress at the constrained boundary.
