Article
Materials Science, Multidisciplinary
Guotan Liu, Han Chen, Weihong Gao, Zhihao Huang, Yuxi Yang, Zifeng Li, Mufu Yan, Yu-dong Fu
Summary: The adsorption and diffusion of nitrogen atoms in Ti bulk and Ti surface layer were studied, with consideration of Al doping in the surface layer. This study provides fundamental insights into the diffusion mechanism in the nitriding treatment of titanium alloys.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2022)
Article
Chemistry, Physical
Lazhar Torchane
Summary: Rare earth elements have a significant influence on the nitrogen diffusion kinetics and surface properties of 32CrMoNiV5 steel, improving surface hardness, diffusion depth, and nitrogen concentration. Various methods of measurement, analysis, and observation were used to characterize the nitrided alloys, showing the presence of cerium and lanthanum oxides in the diffusion layer.
SURFACES AND INTERFACES
(2021)
Article
Chemistry, Applied
Yang Yang, Xiang Zhou, Faqing Pan, Zuju Ma, Rongjian Sa, Jun Zheng, Qimin Wang
Summary: The study showed that rare earth doping can alter the adsorption positions, energies, and abilities of carbon atoms on the surface and subsurface of iron. After carbon adsorption, La atoms are pulled out from the surface due to strong interaction with carbon.
JOURNAL OF RARE EARTHS
(2021)
Article
Materials Science, Coatings & Films
Chang Du, Jin Zhang, Le Zhang, Yong Lian, Mengsha Fang
Summary: The study shows that rare earth elements can decrease the diffusion activation energy in salt baths, increase the decomposition rate of active nitrogen atoms, and accelerate nitriding at the atomic level.
SURFACE ENGINEERING
(2021)
Article
Chemistry, Physical
Lu-Yao Hao, Xu-Zhong Wen, Xiao-Wei Lei, Wen-Jing Yao, Nan Wang
Summary: The diffusion behavior of nitrogen at the interface of Ni-based superalloys was investigated using first-principles calculations. It was found that the γ matrix provides more trapping sites for nitrogen atoms compared to the γ' precipitate, due to the preference of nitrogen atoms to occupy the 6-Ni octahedral interstitial site. The migration energy barrier for nitrogen crossing the (002)γ/γ' coherent plane is higher in the γ phase, indicating that nitrogen atoms can move into the γ' phase only under certain conditions. The low diffusion ability of nitrogen in the γ' phase and the potential barrier role of the (002)γ/γ' coherent plane contribute to the unfavorable nitriding behavior of the γ' phase in Ni-based superalloys.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Chemistry, Physical
Javed Rehman, Xiaofeng Fan, M. K. Butt, Amel Laref, Van An Dinh, W. T. Zheng
Summary: Research on 2D materials like SnSe2 for Na and K ion batteries has shown promising results, with strong adsorption, conductive behavior, low activation barriers, and high theoretical capacity, making them potentially productive for commercialization.
APPLIED SURFACE SCIENCE
(2021)
Article
Materials Science, Ceramics
Juanli Zhao, Wai-Yim Ching, Jiancheng Li, Yun Fan, Yiran Li, Wenxian Li, Bin Liu
Summary: The research on nanocrystalline pyrochlores emphasizes the significance of the surface properties such as structure, composition, and point defect segregation in their thermal, electrical, optical, magnetic, and catalytic performances. Through first-principles calculations, the thermodynamic stabilities, configurations, electronic structures, and oxygen vacancies of low-index (100), (110), and (111) surfaces for A(2)Sn(2)O(7) (A = La, Ce, Pr, Nd, Pm, Sm, Eu, or Gd) are investigated to gain insights into surface-related phenomena. The results reveal that (111) surfaces with A(3)SnO(8) and ASn(3)O(6) terminations exhibit lower surface energies, indicating their stability. In addition, (110) surfaces with A(2)Sn(2)O(8) and A(2)Sn(2)O(6) terminations could also form. The structural stability of these surface structures mainly depends on the number of broken bonds, while the local coordination environment has a minor contribution. Moreover, oxygen vacancies are found to segregate on the surface layer due to the lower energy of breaking bonds during oxygen vacancy formation and the larger relaxation space compared to the bulk counterpart. These findings are valuable for optimizing the performance of these compounds through surface engineering.
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2023)
Article
Chemistry, Physical
Luyao Hao, Yang Bai, Yongxin Liu, Xiaowei Lei, Wenjing Yao, Nan Wang
Summary: This study investigates the role of Ta, Ti, and W doping on the adsorption and diffusion behavior of nitrogen at Ni3Al(1 1 0) and Ni3Al(1 1 1) surfaces based on first-principles calculations. The results show that substituting X atom on the top layer Al site enhances the adsorption ability of nitrogen, especially on Ni3Al(1 1 1), due to stronger bonding with X atoms. The doping of Ti significantly decreases the energy barriers of nitrogen penetration into the gamma '-Ni3Al surface, promoting nitriding in Ni-based superalloys.
APPLIED SURFACE SCIENCE
(2023)
Article
Materials Science, Multidisciplinary
Minghui Wang, Fangling Yang, Yuqi Chen, Tao Gao, Jianjun Wei, Zongbiao Ye, Fujun Gou
Summary: The diffusion behavior of hydrogen on tin-covered tungsten surfaces was studied using density functional theory. It was found that tin atoms strongly adsorb on the tungsten surface and can reduce the diffusion energy barriers of hydrogen, making diffusion easier. However, the coverage of tin has little impact on the diffusion of hydrogen in the sub-surface of tungsten.
JOURNAL OF NUCLEAR MATERIALS
(2023)
Article
Chemistry, Physical
Ivan Shtepliuk, Rositsa Yakimova
Summary: This paper discusses the adsorption, diffusion, and intercalation processes of hydrogen and lithium on monolayer epitaxial graphene grown on 4H-SiC, revealing strong and stable chemisorption of hydrogen on the top site of epitaxial graphene and lithiation process occurring via formation of LiC6 phase.
APPLIED SURFACE SCIENCE
(2021)
Article
Energy & Fuels
Yuchen Liu, Djafar Chabane, Omar Elkedim
Summary: In this study, the structure, phase stability, and electronic structure of La4MgNi19 alloy with partial substitution of La by Pr, Sm, Gd, Nd and Co substitution of Ni were investigated using density functional theory. The calculation results showed that La4MgNi19 alloy exhibited negative enthalpy of formation, indicating thermodynamic stability. When La was substituted, Pr, Nd, Sm, and Gd preferably occupied the La(4f) site. The addition of doping elements reduced the phase stability, with Pr substituted La4MgNi19 showing the highest structural stability. Co substitution of Ni destabilized the crystal structure, and the system still exhibited metallic character after substitution.
JOURNAL OF ENERGY STORAGE
(2023)
Article
Materials Science, Multidisciplinary
Aurash Karimi, Michael Auinger
Summary: This study systematically investigates the diffusion of nitrogen in Ferrite and Austenite using a robust multiscale model combining Density Functional Theory and Kinetic Monte Carlo. Quantitative predictions are made for nitrogen diffusion in vacancy-rich iron crystals, providing valuable insights for nitriding manufacturers. The enhanced diffusion models may play a crucial role in improving existing processes and avoiding common manufacturing problems.
Article
Materials Science, Multidisciplinary
Zhaopeng Hao, Yuan Qiu, Yihang Fan, Wencang Fu
Summary: In this study, a WCCo model doped with rare earth elements was established and optimized using first-principles method. The elastic constants, electronic properties, and thermodynamic properties of the doped WC-Co were calculated. The results indicate that the comprehensive performance of cemented carbide materials improved significantly after doping with rare earth elements.
INTERNATIONAL JOURNAL OF REFRACTORY METALS & HARD MATERIALS
(2021)
Article
Chemistry, Physical
Mengqin Ding, Peng Hu, Yi Ru, Wenyue Zhao, Yanling Pei, Shusuo Li, Shengkai Gong
Summary: The study shows that rare-earth elements can affect the oxidation resistance of ni-based single crystal superalloys by stabilizing oxygen adsorption on the surface of gamma-Ni alloys and increasing the chemical bonding strength between oxygen and RE atoms. Additionally, when a single RE atom substitutes at a subsurface layer site, the adsorption energies of oxygen on Ni(100) surface are further increased, which is mainly due to the combined effects of RE-O interaction and local lattice distortion. These findings help to understand the underlying mechanism for the improved oxidation resistance of Ni-based SC superalloys with a small amount of RE additions.
APPLIED SURFACE SCIENCE
(2021)
Article
Chemistry, Physical
Ziyang Zhang, Liming Liu, Canhui Xu, Shuanglin Hu
Summary: The hydrogen adsorption and diffusion behaviors on clean and doped Zr(0001) surfaces were studied using first-principles calculations. It was found that most dopants promote hydrogen adsorption on next nearest neighbor sites and enhance hydrogen diffusion on the surface plane and penetration into subsurface layers. Element doping may facilitate hydride nucleation in Zr alloys.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Materials Science, Multidisciplinary
Xia Liu, Chenglong Shen, Kai Hu, Shihong Zhang, Zhaolu Xue, Yang Yang
Summary: NiAl/Cr3C2-NiCr and NiCr/Cr3C2-NiCr gradient coatings were annealed to improve their performance, leading to increased hardness and improved wear and corrosion resistance. The NiCr bond layer significantly affected the adhesion strength and corrosion resistance of the coatings.
JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE
(2023)
Article
Nanoscience & Nanotechnology
S. S. Dash, D. J. Li, X. Q. Zeng, D. Y. Li, D. L. Chen
Summary: The aim of this study is to investigate the monotonic and cyclic deformation behavior of a high-pressure die cast Silafont (R)-36 alloy in a naturally-aged T4 state. The T4 heat treatment led to significant microstructural changes, resulting in the transformation of coralloid-like eutectic Si particles to spheroidal Si particles embedded in the Al matrix. The T4 alloy exhibited strong cyclic hardening and a longer low cycle fatigue life compared to its as-cast state at lower strain amplitudes, attributed to particle-dislocation interactions during deformation. A strain energy density-based model incorporating microstructural aspects can be used to predict the fatigue life of the T4 alloy.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2023)
Article
Physics, Applied
Jing Luo, Ziran Liu, Dongyang Li
Summary: In this work, the interaction between various solutes and vacancies in Mo alloys was investigated using first-principles calculations. It was found that light impurity elements have strong interaction with Mo, while most transition metal solutes exhibit attractive interaction with vacancies. The effects of electron and strain-elimination on solute-vacancy interaction were also discussed, and a database based on these effects was established.
JOURNAL OF APPLIED PHYSICS
(2023)
Article
Engineering, Mechanical
R. J. Chung, J. Jiang, C. Pang, B. Yu, R. Eadie, D. Y. Li
Summary: This article reports on recent studies of erosion-corrosion of high manganese steel in slurry transport systems, comparing its performance to commonly used pipeline steels and other materials. The results show that the high strain-hardening capability of high manganese steel results in outstanding erosion resistance, making it more than twice as effective as ferritic steels. The study also compared the results to field trials conducted in an oil sands coarse tailings pipeline.
Article
Engineering, Mechanical
Aakash Kumar, Yunqing Tang, D. Y. Li, D. L. Chen, Wei Li, Q. Y. Li
Summary: Solid-solution hardening can improve the wear resistance of metals by pinning dislocations and affecting the atomic bond strength and Young's modulus. Cu was hardened by Ni and Mn, resulting in increased hardness and Young's modulus with Ni addition, and decreased Young's modulus but increased hardness with Mn addition. However, the effect of Ni and Mn on wear resistance is underestimated or overestimated by using the classic Archard equation, which can be corrected by a wearing energy model taking into account the influence of Young's modulus.
Article
Engineering, Mechanical
Mingyu Wu, Guijiang Diao, J. F. Yuan, D. Fraser, Jing Li, R. Chung, D. Y. Li
Summary: The Co-free AlCrFeNi HEA shows promising application prospects due to its simple duplex BCC phase structure and excellent mechanical properties. The effects of Ti on the corrosion and corrosive wear of AlCrFeNi alloy in salty and acidic solutions were investigated. Ti addition led to improved corrosion resistance and corrosive wear resistance, attributed to increased hardness and enhanced protectiveness of surface oxide film. However, excessive Ti content resulted in accelerated corrosive wear due to crack and delamination formation, despite the higher hardness exhibited by the Ti-containing alloys.
Article
Engineering, Mechanical
Z. Xu, Q. Y. Li, Wei Li, D. Y. Li
Summary: In this study, WC particles were added to AlCoCrFeNi and AlCrFeNi alloys to investigate their microstructure, mechanical properties, wear resistance, and corrosion resistance. The addition of WC resulted in the formation of in situ carbides in both alloys. The WC-added AlCrFeNi alloy exhibited higher hardness and wear resistance compared to the WC-added AlCoCrFeNi alloy. The corrosion resistance of the alloys improved due to the reduced volume loss caused by corrosive wear.
Article
Nanoscience & Nanotechnology
Jie Li, Lei Sun, Jinming Xie, Yang Yang, Dongyang Li, Shihong Zhang
Summary: This study reports a novel process for the fabrication of high-performance graphite-like carbon (GLC) films on nitrided substrates through catalytic reaction. The interface between the nitrided substrate and GLC films forms a beneficial nanocrystalline and amorphous structure, enhancing the adhesion and wear resistance of GLC films.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Materials Science, Ceramics
Junfeng Gou, Jinbao Guo, Jieyu Zhu, Jiawen Yao, Dongyang Li, You Wang, Jiangwen Liu, Yang Yang
Summary: In this study, plasma-sprayed coatings containing different levels of graphene nanosheets were prepared to investigate the effects on microstructure, mechanical properties, and wear behavior. The results showed that graphene increased porosity and microhardness of the coating, but excessive amounts decreased microhardness significantly. Additionally, coatings with graphene exhibited improved crack resistance and wear behavior.
INTERNATIONAL JOURNAL OF APPLIED CERAMIC TECHNOLOGY
(2023)
Article
Materials Science, Multidisciplinary
Jipeng Jiang, D. Y. Li
Summary: A well-formed porous Ti3AlC2 preform with honeycomb structure was prepared using the mold forming method, and a TiCx/high chromium white iron (TiCx/HCWI) composite with a fine TiCx framework formed by porous Ti3AlC2 preform in situ decomposition was successfully prepared using pressureless infiltration method. The HCWI composite with fine in situ TiCx framework exhibited excellent properties, with the transition zone between the framework and HCWI showing the highest hardness, minimum friction coefficient, wear depth, and electronic work function (EWF), which can protect the entire sample during wear.
Article
Nanoscience & Nanotechnology
G. J. Diao, A. Q. He, Y. Q. Tang, M. Y. Wu, D. Zhang, W. G. Chen, D. L. Chen, D. Y. Lia
Summary: The individual effects of Al and Ti on microstructure, mechanical and tribological properties of CrFe2Ni2 alloy were investigated. Al addition changed the alloy phase from FCC to a mixture of FCC, A2 and B2 phases, increasing the mechanical strength while slightly sacrificing ductility. Ti caused the formation of hard phases in the alloy, increasing the wear resistance, but also decreasing the ductility. Detailed characterization is crucial for optimizing tribological applications of relevant HEAs.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2023)
Article
Physics, Multidisciplinary
Dong Zhang, D. Y. Li
Summary: Determination of intrinsic Young's modulus is crucial for material design and applications. Commonly used micro/nano-indentation method does not accurately measure the intrinsic Young's modulus due to the presence of local damage. This study proposes an extrapolation method to determine the intrinsic Young's modulus by analyzing the load curve as the indentation load approaches zero. Comparison of indentation behaviors with acoustic measurements reveals that intrinsic Young's modulus provides more accurate material ranking.
Article
Engineering, Manufacturing
D. Bajaj, Z. Chen, S. J. Qu, A. H. Feng, D. Y. Li, D. L. Chen
Summary: Multiple simultaneous or sequential deformation mechanisms exist in high-entropy alloys, and 3D-printed high-entropy alloys have great potential in structure-property relationships. This study investigates the tensile deformation mechanisms of a 3D-printed CrMnFeCoNi high-entropy alloy using electron backscatter diffraction (EBSD). The deformation twinning in the alloy is guided by crystal orientation and depletion of gliding dislocations, and the size of twins increases with the twinning propensity factor. These findings provide insights into the deformation mechanisms and offer theoretical guidance for developing advanced high-entropy alloys via additive manufacturing.
ADDITIVE MANUFACTURING
(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.
