Article
Engineering, Mechanical
Chuanlong Xu, Xiaobao Tian, Wentao Jiang, Qingyuan Wang, Haidong Fan
Summary: This study investigates the migration mechanisms of symmetric tilt grain boundaries (STGBs) in magnesium using molecular dynamic simulations. The results show that the migration mechanisms of grain boundaries are significantly influenced by their structure, with small angle STGBs migrating through twin nucleation and growth, large angle STGBs migrating through the glide of grain boundary dislocations, and medium angle STGBs transforming into twin boundaries through the emission of lattice dislocations/stacking faults.
INTERNATIONAL JOURNAL OF PLASTICITY
(2022)
Article
Materials Science, Multidisciplinary
Y. Cui, H. B. Chew
Summary: This study utilizes artificial neural networks for machine learning to predict local atomistic stress distributions along grain boundaries based on limited training data from molecular dynamics simulations. The accuracy of the ML algorithm is found to depend on the type, sequence, and distortion of grain boundary structural units, with accounting for these characteristics in the training dataset enabling accurate predictions of local atomistic stress distributions across various grain boundary structures. This ML-based constitutive modeling opens up possibilities for interpreting the equivalent stress state of atomistic structures beyond molecular dynamics, including structures from high-resolution transmission electron microscopy imaging and Density Functional Theory modeling.
Article
Materials Science, Multidisciplinary
Cong Dai, Qiang Wang, Andrew Prudil, Wenjing Li, Lori Walters
Summary: The effect of irradiation damage on radiation-induced segregation at grain boundaries of alloy 800H was studied using both microscopic experiments and atomistic simulations. The grain boundary character distribution and proton-irradiation-induced defects were determined experimentally, and recreated in atomistic simulations to study their atomistic structure and local element concentration. The impact of radiation-induced defects on the redistribution of alloying elements at various grain boundaries was investigated. A proposed mechanism explains the local chemical changes at grain boundaries after interaction with radiation-induced dislocation loops, which is significant for nuclear reactor performance.
JOURNAL OF NUCLEAR MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Shuji Fujisawa, Kazuho Daicho, Ayhan Yurtsever, Takeshi Fukuma, Tsuguyuki Saito
Summary: All-atom molecular dynamics simulations and atomic force microscopy were used to study the structural dynamics of single nanocellulose during drying. It was discovered that the twist morphology of nanocellulose becomes localized along the fibril axis in the final stage of drying. Conformational changes at C6 hydroxymethyl groups and glycoside bond were also observed, indicating an increase in crystallinity during the drying process. These insights provide valuable information for understanding the nanocellulose structures in material processing and designing materials with advanced functionalities.
Article
Nanoscience & Nanotechnology
Sung Bo Lee, Seung Jo Yoo, Jinwook Jung, Heung Nam Han
Summary: The irradiation of high-energy particles can affect the grain-boundary structure of polycrystalline nuclear materials, with different reactions observed for different grain-boundary characteristics. By examining different types of grain boundaries in a model system, it was found that tilt boundaries became roughened while twist boundaries became faceted under the same irradiation conditions.
SCRIPTA MATERIALIA
(2021)
Article
Materials Science, Multidisciplinary
Genchun He, Chao Xu, Chunmei Liu, Huaping Liu
Summary: This study systematically investigated the effect of symmetrical (001) tilt grain boundaries on the hardness of diamond and revealed that the misorientation angle plays a crucial role, with smaller angles leading to hardness enhancement. For misorientation angles smaller than 36.87°, plastic deformations are mainly caused by dislocation propagation, while for larger angles, it is mainly through atomic disordering mode.
MATERIALS & DESIGN
(2021)
Article
Chemistry, Physical
Susumu Ikeda, Bin Feng, Naoya Shibata, Yuichi Ikuhara
Summary: Atomic arrangements and their influence on oxygen ion diffusion were investigated in yttria-stabilized zirconia (YSZ) using molecular dynamics (MD) simulations. The results showed that the sigma 11 [110]/{113} grain boundary (GB) reduces oxygen ion diffusion across and along the GB, while the sigma 9 [110]/{221} GB has little influence on the diffusion. The difference can be explained by the variation in nearest neighbor O-O distance. MD simulations also predicted the formation of two-dimensional honeycomb-shaped path networks of oxygen ion diffusion along the cores of the sigma 3[110]/{111} GB in YSZ, which has the potential to enhance ion diffusion along GBs.
SOLID STATE IONICS
(2023)
Article
Materials Science, Multidisciplinary
Ayush Suhane, Matthias Militzer
Summary: Conventional grain growth models lack consideration for the variability in grain boundary properties, and instead rely on empirical parameters. This study presents a systematic analysis that accounts for anisotropic grain boundary properties and provides a relationship to determine representative properties for an arbitrary distribution. Phase field simulations are used to analyze the effect of anisotropic mobility and segregation on average grain size evolution. It is found that the average grain size evolution can be determined using representative properties determined from simulations with varying anisotropic properties. The range of applicability for the phenomenological model is identified as moderate anisotropies.
COMPUTATIONAL MATERIALS SCIENCE
(2023)
Article
Materials Science, Multidisciplinary
Xiaojiang Long, Weihao Wang, Wanli Zhang, Guangzhao Wang, Wenxi Zhao
Summary: In this study, shock-induced sliding behavior of (0 0 1) twist grain boundaries in Cu bicrystal was investigated using molecular dynamics simulations. The sliding of grain boundaries is found to be produced by transverse particle motion in the constituent grains and is resisted by the viscosity of the grain boundaries. The magnitude of sliding is determined by the angle between the [1 0 0] direction in the grain and the shock direction.
RESULTS IN PHYSICS
(2022)
Article
Materials Science, Multidisciplinary
Ian Chesser, Elizabeth Holm, Brandon Runnels
Summary: This study reinterprets the problem of atomic displacement minimization during grain boundary migration as an optimal transport problem, applying the principle of stationary action to determine the Wasserstein metric for GB migration. The predicted optimal displacement patterns based on a forward model are compared to molecular dynamics data to test the minimum distance hypothesis. The results discuss the limitations of the hypothesis and the interesting consequences of the OT formulation in analyzing MD data for various types of grain boundaries.
Article
Chemistry, Physical
Rafael V. M. Freire, Yeny Pillco-Valencia, Gabriel C. A. da Hora, Madeleine Ramstedt, Linda Sandblad, Thereza A. Soares, Stefan Salentinig
Summary: This study investigates the interactions between LL-37 and POPG vesicles, revealing that LL-37 actively modifies membrane curvature and leads to structural transformations from vesicles to mixed micelles. The findings shed light on the mechanisms underlying the interactions between LL-37 and bacteria mimetic vesicles, providing guidance for the development of AMP-based antimicrobial materials and therapies.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2021)
Article
Materials Science, Multidisciplinary
Carolina Baruffi, Christian Brandl
Summary: High radiation damage resistance is increasingly important for functional materials in harsh environments. Diamond cubic carbon, with its high radiation damage resistance, is a unique material that can be used in radiation environments. The interaction between point defects and interfaces, such as grain boundaries, increases resistance to radiation damage. Grain boundaries act as sinks for point defects and can be used to control the segregation of point defects, thereby preventing material degradation.
Article
Materials Science, Multidisciplinary
Lixia Liu, Yangchun Chen, Ning Gao, Zhixiao Liu, Fei Gao, Wangyu Hu, Huiqiu Deng
Summary: Using molecular dynamics simulations, this study investigates the effects of grain boundaries and σ phase evolution in tungsten and tungsten alloys through collision cascade simulations. The results show that in W-Re alloys, interstitials are preferentially absorbed by grain boundaries and σ phases, leading to defect aggregation.
JOURNAL OF NUCLEAR MATERIALS
(2022)
Article
Materials Science, Multidisciplinary
Jingxiao Ren, Hongxian Xie, Fuxing Yin, Guanghong Lu
Summary: In this study, the impact of grain boundaries on the growth of helium bubbles was investigated. It was found that low-angle symmetrical tilt grain boundaries can form helium nanochannels and release helium outside of the tungsten matrix, which may be a potential strategy to address bubble nucleation and swelling.
JOURNAL OF NUCLEAR MATERIALS
(2023)
Article
Nanoscience & Nanotechnology
Joseph Messina, Renjie Luo, Ke Xu, Guanghong Lu, Huiqiu Deng, Mark A. Tschopp, Fei Gao
Summary: Magnesium alloys have advantages in applications due to their high strength-to-weight ratio, but properties like corrosion resistance, formability, and creep are still concerns, especially in magnesium-aluminum alloys. This study quantifies aluminum segregation energetics at grain boundaries using atomistic simulations, showing that the segregation of aluminum is influenced by grain boundary structure and the local atomic environment, which has broad implications for grain boundary science and engineering.
SCRIPTA MATERIALIA
(2021)
Article
Materials Science, Multidisciplinary
Caihao Qiu, Marco Salvalaglio, David J. Srolovitz, Jian Han
Summary: An intrinsic feature of crystalline systems is the presence of disconnections, which strongly affect the morphology and motion of interfaces. These elastic interactions modify equilibrium interface morphologies compared to surface energy and affect interface kinetics, leading to a faceting-defaceting transition.
Article
Physics, Applied
Wei Wei, Ming Gao, Zhiyong Wang, Yong-Wei Zhang, Zhi Gen Yu, Wai Kin Chim, Chunxiang Zhu
Summary: Alloying CuI with CuBr is proposed to reduce the hole concentration in CuIBr alloy, leading to an increased on/off current ratio for CuIBr TFT devices. The CuIBr TFT with 7.5% Br content exhibits a high hole mobility of larger than 5 cm(2) V-1 s(-1) and a high on/off current ratio of 10^4, which enables the development of inorganic-based CMOS circuits on flexible and transparent substrates.
APPLIED PHYSICS LETTERS
(2023)
Article
Chemistry, Physical
Wei Yue, Hongbo Fan, Weinan Ru, Zhaoxuan Wu, Zhixiong Zhang, Lunyong Zhang, Zhiliang Ning, Jianfei Sun, Shu Guo, Yongjiang Huang
Summary: Emerging high-entropy alloys (HEAs) exhibit superior mechanical properties due to a synergy of multiple deformation mechanisms and their interactions. In this study, in-situ tensile deformation of a CrMnFeCoNi HEA at room temperature was conducted, revealing the effects of dislocation activity, slip band activation, and interactions on strain hardening rate. The alloy demonstrated high fracture toughness, with cracks initiating at slip zones and grain boundaries and propagating gradually to final fracture.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Materials Science, Multidisciplinary
Liang-Xing Lu, Hao Jiang, Qin Bian, Wenzhu Shao, Liyi Li, Yong -Wei Zhang, Bo Liang, YuSheng Shi, Liang Zhen
Summary: In-depth understanding of the layer-by-layer process is crucial for quality control of AM components. Computational modelling is an important method to study the mechanisms of AM process, but lacks an integrated platform. In this study, we develop a modelling framework that combines different methods and algorithms to simulate the PBF process of NiTi shape memory alloy. Our simulation reveals the factors determining laser absorptivity and we also propose an analytical model to predict keyhole depth and absorptivity. This work provides a solid foundation for quantitative understanding of multi-layer AM process.
MATERIALS & DESIGN
(2023)
Article
Materials Science, Multidisciplinary
Shuai Chen, Zachary H. Aitken, Subrahmanyam Pattamatta, Zhaoxuan Wu, Zhi Gen Yu, David J. Srolovitz, Peter K. Liaw, Yong-Wei Zhang
Summary: By employing density-functional theory calculations, Monte Carlo method, and molecular dynamic simulation, this study investigates the role of short-range ordering (SRO) on dislocation kinetics in a BCC MoTaTiWZr high-entropy alloy. The results demonstrate that SRO enhances the energy barriers for both edge and screw dislocation motion, giving rise to the dominance of edge dislocations in the BCC RHEA.
Article
Materials Science, Multidisciplinary
Jianwei Xiao, Lingyu Zhu, Rui Wang, Chuang Deng, Zhaoxuan Wu, Yuntian Zhu
Summary: Twinning provides critical stress-relieving and flaw tolerance in body-centred cubic (BCC) transition metals (TMs) when dislocation plasticity is suppressed. Twin nucleation and growth mechanisms have been studied for over half a century without a consensus. Here, we use a reduced-constraint slip method to unveil the path to twin nucleation, growth and associated energy barriers in the entire BCC TM family.
Article
Chemistry, Inorganic & Nuclear
Qun Li, Wenyu Zhou, Chunyan Deng, Chenyang Lu, Peng Huang, Dong Xia, Luxi Tan, Cailong Zhou, Yong-Wei Zhang, Lichun Dong
Summary: This study introduces hydroxyl groups onto the surface of Pt catalysts to overcome the challenges posed by environmental water in catalytic oxidation reactions. The presence of hydroxyl groups on the Pt catalysts enhances their catalytic activity and water resistance. Theoretical calculations reveal that the presence of hydroxyl groups modulates the d-band structure, improving the adsorption and activation of reactants.
INORGANIC CHEMISTRY
(2023)
Article
Engineering, Mechanical
Tongqi Wen, Anwen Liu, Rui Wang, Linfeng Zhang, Jian Han, Han Wang, David J. Srolovitz, Zhaoxuan Wu
Summary: This study determines the properties of dislocation cores, twins, and cracks in HCP and BCC Ti using Deep Potential (DP), DFT, and linear elastic fracture mechanics. It provides insights into the behavior of slip dislocations and the brittleness of cracks on basal planes, as well as the energy and structure of twin boundaries. The results offer a comprehensive understanding of Ti plasticity and fracture.
INTERNATIONAL JOURNAL OF PLASTICITY
(2023)
Article
Nanoscience & Nanotechnology
Ping Liu, Shuai Chen, Qing-Xiang Pei, Zachary H. Aitken, Wanghui Li, Yong-Wei Zhang
Summary: This study investigates the mechanical properties of AlxCoCuFeNi HEAs composites reinforced with AlNi3 nanoparticles using large-scale molecular dynamics simulations. The results show that the AlNi3 nanoparticles can enhance the ultimate tensile strength and ultimate tensile strain of the composite by suppressing phase change and dislocation appearance in the HEA matrix. The study also reveals the underlying reason for the lower-bound relation between Young's modulus, ultimate tensile strength, and ultimate tensile strain by following the rule of mixtures.
Article
Multidisciplinary Sciences
Shuai Chen, Ping Liu, Qingxiang Pei, Zhi Gen Yu, Zachary H. Aitken, Wanghui Li, Zhaoxuan Wu, Rajarshi Banerjee, David J. Srolovitz, Peter K. Liaw, Yong-Wei Zhang
Summary: This study constructs nanolamellar high-entropy alloys and explores their mechanical properties using molecular dynamic simulation and density functional theory calculation. The results show that the nanolamellar structure exhibits ideal plastic behavior and remarkable shape memory effect, highlighting the importance of nanolamellar structures in controlling the mechanical and functional properties of high-entropy alloys.
Article
Chemistry, Physical
Hao Yuan, Jing Yang, Yong-Wei Zhang
Summary: An ideal host for sulfur cathodes in rechargeable lithium-sulfur batteries should possess high electrical conduction, suppression of the shuttle effect, fast charging/discharging process, fast ion/polysulfide diffusion, and a substrate for 3D Li2S deposition. In this study, Ti3C2F2 was investigated as a host for sulfur cathodes. It was found that Ti3C2F2 enables fast Li2S migration. Mixed surface terminations achieved by doping O or S into Ti3C2F2 showed promising results in terms of 3D deposition mode, accelerated charging/discharging kinetics, and effective suppression of shuttling.
JOURNAL OF MATERIALS CHEMISTRY A
(2023)
Article
Chemistry, Multidisciplinary
Xuefei Han, Jing Yang, Yong-Wei Zhang, Zhi Gen Yu
Summary: In this work, an effective strategy to enhance the performance of rechargeable aqueous ion batteries (AIBs) by using intercalated CO2 molecules to broaden the interlayer spacing was developed. The intercalation of CO2 significantly increased the interlayer spacing, diffusivity, and intercalation concentration of metal ions, making it a promising cathode material for rapidly rechargeable batteries with high storage capacity.
NANOSCALE ADVANCES
(2023)
Article
Materials Science, Multidisciplinary
Qing-Xiang Pei, Wanghui Li, Zachary H. Aitken, Ping Liu, Yong-Wei Zhang
Summary: This study investigates the impact performance of AlCoCuFeNi HEA/graphene composites using molecular dynamics simulations and finds that graphene can enhance the impact properties of the HEA. The enhancement is mainly attributed to the strong load carrying ability of graphene, although it can also have a negative effect on the impact force of HEA by breaking the structure continuity. Moreover, graphene significantly affects the stress distribution and dislocation behavior at the HEA/graphene interface during the impact process.
JOURNAL OF MATERIALS SCIENCE
(2023)
Article
Materials Science, Multidisciplinary
Y. Liu, K. Zweiacker, C. Liu, J. T. McKeown, J. M. K. Wiezorek
Summary: The evolution of rapid solidification microstructure and solidification interface velocity of hypereutectic Al-20at.%Cu alloy after laser melting has been studied experimentally. It was found that the formation of microstructure was dominated by eutectic, alpha-cell, and banded morphology grains, and the growth modes changed with increasing interface velocity.
Article
Materials Science, Multidisciplinary
Bharat Gwalani, Julian Escobar, Miao Song, Jonova Thomas, Joshua Silverstein, Andrew Chihpin Chuang, Dileep Singh, Michael P. Brady, Yukinori Yamamoto, Thomas R. Watkins, Arun Devaraj
Summary: Castable alumina forming austenitic alloys exhibit superior creep life and oxidation resistance at high temperatures. This study reveals the mechanism behind the enhanced creep performance of these alloys by suppressing primary carbide formation and offers a promising alloy design strategy for high-temperature applications.
Article
Materials Science, Multidisciplinary
Jian Song, Qi Zhang, Songsong Yao, Kunming Yang, Houyu Ma, Jiamiao Ni, Boan Zhong, Yue Liu, Jian Wang, Tongxiang Fan
Summary: Recent studies have shown that achieving an atomically flat surface for metals can greatly improve their oxidation resistance and enhance their electronic-optical applications. Researchers have explored the use of graphene as a covering layer to achieve atomically flat surfaces. They found that high-temperature deposited graphene on copper surfaces formed mono-atomic steps, while annealed copper and transferred graphene on copper interfaces formed multi-atomic steps.
Article
Materials Science, Multidisciplinary
Jennifer A. Glerum, Jon-Erik Mogonye, David C. Dunand
Summary: Elemental powders of Al, Ti, Sc, and Zr are blended and processed via laser powder-bed fusion to create binary and ternary alloys. The microstructural analysis and mechanical testing show that the addition of Ti results in the formation of primary precipitates, while the addition of Sc and Zr leads to the formation of fine grain bands. The Al-0.25Ti-0.25Zr alloy exhibits comparable strain rates to Al-0.5Zr at low stresses, but significantly higher strain rates at higher stresses during compressive creep testing. Finite element modeling suggests that the connectivity of coarse and fine grain regions is a critical factor affecting the creep resistance of the alloys.
Article
Materials Science, Multidisciplinary
P. Jannotti, B. C. Hornbuckle, J. T. Lloyd, N. Lorenzo, M. Aniska, T. L. Luckenbaugh, A. J. Roberts, A. Giri, K. A. Darling
Summary: This work characterizes the thermo-mechanical behavior of bulk nanocrystalline Cu-Ta alloys under extreme conditions. The experiments reveal that the alloys exhibit unique mechanical properties, behaving differently from conventional nanocrystalline Cu. They do not undergo grain coarsening during extrusion and exhibit behavior similar to coarse-grained Cu.
Article
Materials Science, Multidisciplinary
Yiqing Wei, Jingwei Li, Daliang Zhang, Bin Zhang, Zizhen Zhou, Guang Han, Guoyu Wang, Carmelo Prestipino, Pierric Lemoine, Emmanuel Guilmeau, Xu Lu, Xiaoyuan Zhou
Summary: This study proposes a new strategy to modify microstructure by phase regulation, which can simultaneously enhance carrier mobility and reduce lattice thermal conductivity. The addition of Cu in layered SnSe2 induces a phase transition that leads to increased grain size and reduced stacking fault density, resulting in improved carrier mobility and lower lattice thermal conductivity.
Article
Materials Science, Multidisciplinary
Jia Chen, Zhengyu Zhang, Eitan Hershkovitz, Jonathan Poplawsky, Raja Shekar Bhupal Dandu, Chang-Yu Hung, Wenbo Wang, Yi Yao, Lin Li, Hongliang Xin, Honggyu Kim, Wenjun Cai
Summary: In this study, the structural origin of the pH-dependent repassivation mechanisms in multi-principal element alloys (MPEA) was investigated using surface characterization and computational simulations. It was found that selective oxidation in acidic to neutral solutions leads to enhanced nickel enrichment on the surface, resulting in reduced repassivation capability and corrosion resistance.
Article
Materials Science, Multidisciplinary
X. Y. Xu, C. P. Huang, H. Y. Wang, Y. Z. Li, M. X. Huang
Summary: The limited slip systems of magnesium (Mg) and its alloys hinder their wide applications. By conducting tensile straining experiments, researchers discovered a rate-dependent transition in the dislocation mechanisms of Mg alloys. At high strain rates, glissile dislocations dominate, while easy-glide dislocations dominate at low strain rates. Abundant glissile dislocations do not necessarily improve ductility.
Article
Materials Science, Multidisciplinary
M. S. Szczerba, M. J. Szczerba
Summary: Inverse temperature dependences of the detwinning stress were observed in face-centered cubic deformation twins in Cu-8at.%Al alloy. The detwinning stress increased with temperature when the pi detwinning mode was involved, but decreased when the pi/3 mode was involved. The dual effect of temperature on the detwinning stress was due to the reduction of internal stresses pre-existing within the deformation twins. The complete reduction of internal stresses at about 530 degrees C led to the equivalence of the critical stresses of different detwinning modes and a decrease in the yield stress anisotropy of the twin/matrix structure.
Article
Materials Science, Multidisciplinary
Taowen Dong, Tingting Qin, Wei Zhang, Yaowen Zhang, Zhuoran Feng, Yuxiang Gao, Zhongyu Pan, Zixiang Xia, Yan Wang, Chunming Yang, Peng Wang, Weitao Zheng
Summary: The interaction between the electrode and the electric double layer (EDL) significantly influences the energy storage mechanism. By studying the popular alpha-Fe2O3 electrode and the EDL interaction, we find that the energy storage mechanism of the electrode can be controlled by modulating the EDL.
Article
Materials Science, Multidisciplinary
Matthew R. Barnett, Jun Wang, Sitarama R. Kada, Alban de Vaucorbeil, Andrew Stevenson, Marc Fivel, Peter A. Lynch
Summary: The elastic-plastic transition in magnesium alloy Mg-4.5Zn exhibits bursts of deformation, which are characterized by sudden changes in grain orientation. These bursts occur in a coordinated manner among nearby grains, with the highest burst rate observed at the onset of full plasticity. The most significant burst events are associated with twinning, supported by the observation of twinned structures using electron microscopy. The bursts are often preceded and followed by a stasis in peak movement, indicating a certain "birth size" for twins upon formation and subsequent growth at a later stage.
Article
Materials Science, Multidisciplinary
Vaidehi Menon, Sambit Das, Vikram Gavini, Liang Qi
Summary: Understanding solute segregation thermodynamics is crucial for investigating grain boundary properties. The spectral approach and thermodynamic integration methods can be used to predict solute segregation behavior at grain boundaries and compare with experimental observations, thus aiding in alloy design and performance control.
Article
Materials Science, Multidisciplinary
Feiyu Qin, Lei Hu, Yingcai Zhu, Yuki Sakai, Shogo Kawaguchi, Akihiko Machida, Tetsu Watanuki, Yue-Wen Fang, Jun Sun, Xiangdong Ding, Masaki Azuma
Summary: This study reports on the negative and zero thermal expansion properties of Cd2Re2O7 and Cd1.95Ni0.05Re2O7 materials, along with their ultra-low thermal conductivity. Through investigations of their structures and phonon calculations, the synergistic effect of local structure distortion and soft phonons is revealed as the key to achieving these distinctive properties.
Article
Materials Science, Multidisciplinary
Thomas Beerli, Christian C. Roth, Dirk Mohr
Summary: A novel testing system for miniature specimens is designed to characterize the plastic response of materials for which conventional full-size specimens cannot be extracted. The system has an automated operation process, which reduces the damage to specimens caused by manual handling and improves the stability of the test results. The experiments show that the miniature specimens extracted from stainless steel and aluminum have high reproducibility, and the results are consistent with those of conventional-sized specimens. A correction procedure is provided to consider the influence of surface roughness and heat-affected zone caused by wire EDM.
Article
Materials Science, Multidisciplinary
Rani Mary Joy, Paulius Pobedinskas, Nina Baule, Shengyuan Bai, Daen Jannis, Nicolas Gauquelin, Marie-Amandine Pinault-Thaury, Francois Jomard, Kamatchi Jothiramalingam Sankaran, Rozita Rouzbahani, Fernando Lloret, Derese Desta, Jan D'Haen, Johan Verbeeck, Michael Frank Becker, Ken Haenen
Summary: This study investigates the influence of film microstructure and composition on the Young's modulus and residual stress in nanocrystalline diamond thin films. The results provide insights into the mechanical properties and intrinsic stress sources of these films, and demonstrate the potential for producing high-quality nanocrystalline diamond films under certain conditions.