Article
Engineering, Electrical & Electronic
Etienne Navarro, Thomas W. Cornelius, Henry Proudhon, Rahul Sahay, Ihor Radchenko, Stephanie Escoubas, Pooi See Lee, Nagarajan Raghavan, Arief S. Budiman, Olivier Thomas
Summary: Face-centered cubic/body centered cubic (FCC/BCC) nanolaminates prepared by Accumulative Roll Bonding (ARB) have been extensively studied for their unique mechanical properties. Recent experiments on Cu/Nb ARB samples have shown an anisotropic interface sliding behavior related to the strong in-plane texture. A shear test was developed to test interface sliding on a macroscale using a specific sample geometry and in situ tensile loading on an X-ray synchrotron beamline. However, early brittle failure prevented further investigation of interface sliding due to crack initiation from the inner surfaces of the notches used to induce shear.
MICROELECTRONIC ENGINEERING
(2023)
Article
Materials Science, Multidisciplinary
Zhe Yan, Zhaorui Liu, Xiangfei Kong, Bonan Yao, Qi An, Shuimiao Jiang, Ruifeng Zhang, Irene J. Beyerlein, Shijian Zheng
Summary: Voids are common radiation-induced defects in nuclear materials that have detrimental effects on mechanical properties. The size, location, and shape of voids significantly influence dislocation behavior such as nucleation site, nucleation stress, and preferred slip system. Different morphologies of voids have distinct impacts on dislocation behavior.
JOURNAL OF NUCLEAR MATERIALS
(2022)
Article
Physics, Condensed Matter
Kezhong Xu, Hua Zhai, Linghui He, Yong Ni, Pin Lu, Gangfeng Wang, Xuepeng Liu
Summary: Molecular dynamics simulations were used to study the mechanical properties and deformation mechanisms of a Cu/Ta nanolayered composite under uniaxial tension and compression. The results showed different yield points and deformation stages in tension and compression. The deformation primarily involved dislocations and stacking faults in the Cu layers and plastic deformation in the Ta layers. The temperature had a significant effect on the deformation behavior, with high temperature suppressing dislocation activities in the Cu layers and decreasing the yield strengths in both tension and compression.
JOURNAL OF PHYSICS-CONDENSED MATTER
(2022)
Article
Materials Science, Multidisciplinary
Shujing Dong, Xiang-Yang Liu, Youxing Chen, Caizhi Zhou
Summary: Atomistic simulations were used to investigate the plastic deformation and shear band formation in Cu/Au, Cu/Ag, Cu/Al, and Cu/Ni metallic nanolayered composites (MNCs). Interface dislocation structures were found to consist of three sets of edge Shockley partial dislocations in all four MNCs. Dislocations first nucleated from the phase with lower stacking fault energy (SFE) under external loading. Shear bands formed in Cu/Au and Cu/Ag MNCs, with the onset strain of shear band increasing with layer thickness. In contrast, deformation in Cu/Al and Cu/Ni MNCs was relatively uniform, with similar amounts of dislocations on each slip plane. Shear band formation in Cu/Au and Cu/Ag MNCs was induced by the nucleation and growth of deformation twinning in the phase with low SFE, with interface sliding accommodating most plastic strains during deformation.
JOURNAL OF MATERIALS RESEARCH
(2023)
Article
Materials Science, Multidisciplinary
Shujing Dong, Xiang-Yang Liu, Caizhi Zhou
Summary: This research explores the deformation mechanisms and interface misfit dislocation structures of B2-FeAl/Al nanolayered composites through atomistic simulations. It is found that there are two sets of dislocations in the interface misfit dislocation network, and the influence of layer thickness on uniaxial deformation response is investigated. The study also reveals differences in deformation behavior between weak Fe/Cu and strong FeAl/Al interfaces, with the latter triggering strain localization and void formation.
JOURNAL OF MATERIALS SCIENCE
(2021)
Article
Physics, Applied
Shujing Dong, Caizhi Zhou, Tianju Chen
Summary: Metallic nanolayered composites can fail due to shear bands propagation, but it is important to prevent shear bands while harnessing the high strength potential. The mechanisms of shear band formation vary among different nanolayered composites, and advanced computational tools are essential to understand this process.
APPLIED PHYSICS LETTERS
(2023)
Article
Materials Science, Multidisciplinary
Jianjun Li, Feng Qin, Dingshun Yan, Wenjun Lu, Jiahao Yao
Summary: This study investigates the shear instability of a newly designed heterogeneous nanolayered Cu/Zr composites through microindentation. The results show that strain delocalization can be achieved by using an appropriate number of thin bilayers as interlayers, leading to improved strength and resistance to strain localization in the composite material.
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
(2022)
Article
Nanoscience & Nanotechnology
Zhe Yan, Zhaorui Liu, Bonan Yao, Qi An, Ruifeng Zhang, Shijian Zheng
Summary: Interface-induced dislocation nucleation and interface sliding are two decisive mechanisms for understanding the plastic deformation of nanolayered composites. By conducting atomic simulations on the Cu-Nb system, the atomic mechanisms of dislocation nucleation and interface sliding are revealed after introducing CuNb amorphous complexions with different compositions. These findings demonstrate the influence of amorphous complexions on plastic deformation and provide theoretical guidance for the design of nanolayered composites.
SCRIPTA MATERIALIA
(2023)
Article
Materials Science, Multidisciplinary
J. P. Panda, P. Arya, K. Guruvidyathri, Ravikirana, B. S. Murty
Summary: This study investigates the kinetics of FCC phase evolution in equiatomic AlCoCrFeNi alloy, revealing the impact of temperature on phase transformation and hardness. A time-temperature-transformation diagram was constructed to demonstrate the differences in FCC phase formation rates in different regions. The results provide valuable insights for determining heat treatment practices in the alloy.
METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE
(2021)
Article
Chemistry, Physical
Yanjun Ding, Zixuan Deng, Zhu Xiao, Mei Fang, Shen Gong, Wenting Qiu, Xu Wang
Summary: Cu-10Fe-based composites with different Nb content were fabricated and the effect of Nb content on the solidification behavior and microstructure was investigated. The optimal composition was determined as Cu-10Fe-1.0 Nb (wt%). After thermo-mechanical treatment, the samples showed enhanced mechanical properties due to the refinement of Fe-rich phases and the formation of numerous submicron-/nano-sized Fe particles, fine sub-grains, and high-density dislocation in the matrix.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Materials Science, Multidisciplinary
Chuanbin Wang, Junjie Wang, Jianian Hu, Shanglin Huang, Yi Sun, Youlin Zhu, Qiang Shen, Guoqiang Luo
Summary: Cu/Ta metallic nanolayered composites have excellent mechanical properties and are widely used in aerospace and nuclear industry facilities. This study used molecular dynamics simulations to investigate the effect of layer thickness on shear localization in Cu/Ta MNCs. The results show an inverse size effect and interface rotation mechanism in samples with layer thicknesses below 2.5 nm.
Article
Materials Science, Multidisciplinary
Zhaoming Yang, Baoqin Fu, Zhien Ning, Xuanyu Bai, Hengming Yang, Qingchun Chen, Dongwei Luo, Nan Qiu, Yuan Wang
Summary: In this study, multilayer structures with different interface structures were prepared to investigate the mechanical properties and microstructure evolution of EHEAs during plastic deformation. Molecular dynamics simulations were used to analyze dislocation motion and stress distribution. The results showed that the plastic deformation behavior and mechanical properties of EHEAs are sensitive to the heterogeneous interface structure, with the coherent interface facilitating dislocation continuous slip and the semicoherent interface promoting dislocation pileup-induced amorphization. These findings are important for understanding the plastic carrier-interface interaction mechanism and provide new insights for the development of high strength-ductility HEA materials.
MATERIALS & DESIGN
(2023)
Article
Multidisciplinary Sciences
Chaogang Ding, Jie Xu, Debin Shan, Bin Guo, Terence G. Langdon
Summary: Heterostructured materials offer a new approach to enhancing mechanical properties, which are crucial in materials science and engineering. In this study, Cu/Nb multilayer composites with varying layer thicknesses were produced using accumulative roll bonding and their microstructure and mechanical properties were investigated. The yield strength and ultimate tensile strength of these composites increase as the layer thickness decreases. Additionally, the relationship between yield strength and (layer thickness)-1/2 approximately follows the conventional Hall-Petch equation, but with a reduction in the Hall-Petch slope for nanometer-scale layer thicknesses. The deformation microstructure of these Cu/Nb multilayer composites reveals dislocation glide within the layers, leading to a weakening of the strengthening effect at the Cu-Nb interface.
Article
Materials Science, Multidisciplinary
Chaogang Ding, Jie Xu, Debin Shan, Bin Guo, Terence G. Langdon
Summary: The microstructural evolution and mechanical properties of Cu/Nb NMMs under different annealing temperatures were investigated. The results showed that the nanolayered structure of the NMMs is maintained at temperatures below 800°C, but thermal instability occurs at 1000°C, leading to the disintegration of the nanolayered structure. Tensile tests revealed enhanced strain hardening and improved ultimate tensile strength and elongation in the 1000°C annealed samples.
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
(2023)
Article
Materials Science, Multidisciplinary
Jiaxiang Wang, Marko Knezevic, Manish Jain, Siddhartha Pathak, Irene J. Beyerlein
Summary: The study introduces a nanostructure-sensitive crystal plasticity model to analyze the strength of Mg/Nb nanocomposites, showing that BCC/BCC Mg/Nb nanocomposites exhibit higher strength compared to HCP/BCC nanocomposites. The model suggests that the BCC Mg phase contributes to strength by increasing the slip strengths of certain slip modes, and that the coherent interface presents less resistance to dislocation motion.
JOURNAL OF THE MECHANICS AND PHYSICS OF SOLIDS
(2021)
Article
Engineering, Mechanical
Ran Liu, Siddhartha Pathak, William M. Mook, J. Kevin Baldwin, Nathan Mara, Antonia Antoniou
INTERNATIONAL JOURNAL OF PLASTICITY
(2017)
Article
Materials Science, Multidisciplinary
J. Snel, M. A. Monclus, M. Castillo-Rodriguez, N. Mara, I. J. Beyerlein, J. Llorca, J. M. Molina-Aldareguia
Review
Materials Science, Multidisciplinary
Nan Li, Michael J. Demkowicz, Nathan A. Mara
Article
Materials Science, Multidisciplinary
Jordan S. Weaver, Siddhartha Pathak, Ashley Reichardt, Hi T. Vo, Stuart A. Maloy, Peter Hosemann, Nathan A. Mara
JOURNAL OF NUCLEAR MATERIALS
(2017)
Article
Materials Science, Multidisciplinary
L. X. Yang, S. J. Zheng, Y. T. Zhou, J. Zhang, Y. Q. Wang, C. B. Jiang, N. A. Mara, I. J. Beyerlein, X. L. Ma
JOURNAL OF NUCLEAR MATERIALS
(2017)
Article
Nanoscience & Nanotechnology
Taylor M. Wilkinson, Dong Wu, Matthew A. Musselman, Nan Li, Nathan Mara, Corinne E. Packard
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2017)
Article
Materials Science, Multidisciplinary
Zhen Li, Satyesh Yadav, Youxing Chen, Nan Li, Xiang-Yang Liu, Jian Wang, Shixiong Zhang, Jon Kevin Baldwin, Amit Misra, Nathan Mara
MATERIALS RESEARCH LETTERS
(2017)
Article
Materials Science, Multidisciplinary
L. W. Yang, C. Mayer, N. Li, J. K. Baldwin, N. A. Mara, N. Chawla, J. M. Molina-Aldareguia, J. Llorca
Article
Engineering, Mechanical
Bradley M. Schultz, Nan Li, David R. Economy, Julia L. Sharp, Nathan A. Mara, Marian S. Kennedy
Article
Multidisciplinary Sciences
Siddhartha Pathak, Nenad Velisavljevic, J. Kevin Baldwin, Manish Jain, Shijian Zheng, Nathan A. Mara, Irene J. Beyerlein
SCIENTIFIC REPORTS
(2017)
Article
Materials Science, Multidisciplinary
B. P. Eftink, A. Li, I. Szlufarska, N. A. Mara, I. M. Robertson
Article
Materials Science, Multidisciplinary
Y. Liu, N. Li, M. Arul Kumar, S. Pathak, J. Wang, R. J. McCabe, N. A. Mara, C. N. Tome
Article
Nuclear Science & Technology
G. R. Tynan, R. P. Doerner, J. Barton, R. Chen, S. Cui, M. Simmonds, Y. Wang, J. S. Weaver, N. Mara, S. Pathak
NUCLEAR MATERIALS AND ENERGY
(2017)
Article
Materials Science, Multidisciplinary
T. J. Nizolek, M. R. Begley, R. J. McCabe, J. T. Avallone, N. A. Mara, I. J. Beyerlein, T. M. Pollock
Article
Materials Science, Multidisciplinary
Y. Chen, S. Shao, X. -Y. Liu, S. K. Yadav, N. Li, N. Mara, J. Wang