Article
Nanoscience & Nanotechnology
Nan Yang, Bo-Yu Liu, Fei Liu, Zhi-Wei Shan
Summary: Deformation twinning in magnesium can undergo cross-transition, involving prismatic-basal interface migration, to broaden the understanding of twinning mechanisms.
SCRIPTA MATERIALIA
(2022)
Article
Materials Science, Multidisciplinary
Nicolo M. della Ventura, Amit Sharma, Szilvia Kalacska, Manish Jain, Thomas E. J. Edwards, Cyril Cayron, Roland Loge, Johann Michler, Xavier Maeder
Summary: This study systematically investigates the {10 (1) over bar2} extension twinning mechanism in single crystal magnesium micropillars deformed at different strain rates, and reveals the influence of strain rate on the accommodating twin mechanisms. By combining multiple microscopy techniques, it is found that the evolution of twins under high strain rates is influenced by the competition between activated dislocations and lattice distortions, and unconventional twin morphologies cannot be simply described by twinning shear.
MATERIALS & DESIGN
(2022)
Article
Nanoscience & Nanotechnology
Wu Gong, Takuro Kawasaki, Ruixiao Zheng, Tsuyoshi Mayama, Binxuan Sun, Kazuya Aizawa, Stefanus Harjo, Nobuhiro Tsuji
Summary: The deformation behavior of a commercial AZ31 magnesium alloy was studied during uniaxial compression at 21 K and 298 K using in-situ neutron diffraction. Decreasing the deformation temperature led to a slight increase in yield stress, but a remarkable enhancement in both the fracture stress and fracture strain. The low temperature sensitivity of the {10 (1) over bar2} extension twinning resulted in the slight increase in yield stress. At 21K, basal slip was suppressed, while extension twinning was promoted, leading to a higher twin volume fraction. The suppression of {10 (1) over bar1}-{10 (1) over bar2} double twinning in the late stage of deformation was considered to be the reason for the delayed fracture at 21 K.
SCRIPTA MATERIALIA
(2023)
Article
Materials Science, Multidisciplinary
Nicolo Maria della Ventura, Peter Schweizer, Amit Sharma, Manish Jain, Thomas Edward James Edwards, J. Jakob Schwiedrzik, Cinzia Peruzzi, Roland E. Loge, Johann Michler, Xavier Maeder
Summary: The strain rate and temperature dependent mechanical response of single crystal magnesium micropillars compressed along the a-axis was investigated. It was found that extension twinning controlled the plasticity at temperatures below 423K, while prismatic dislocation mediated plasticity dominated at temperatures above 423K and strain rates below 10s-1. At higher strain rates, deformation twinning occurred again. The study also provided a detailed analysis of the transition from slip to twin and the influence of thermal and kinetic contributions on the flow stress evolution.
Article
Materials Science, Multidisciplinary
Mohammadhadi Maghsoudi, Henry Ovri, Tobias Krekeler, Markus Ziehmer, Erica T. Lilleodden
Summary: This investigation examined the impact of solutes on the migration of a Gd-decorated twin boundary in a Mg4wt.% Gd binary alloy. The study focused on the stress-strain response and defect structure after (de)twinning, and compared the results to those of pure Mg under the same conditions. The critical stresses for twinning and detwinning increased by 29% and 10% respectively in the presence of Gd, due to the pinning effect of Gd atoms. In contrast, pure Mg experienced a 68% decrease in detwinning stress due to the absence of solute atoms.
Article
Nanoscience & Nanotechnology
Kang Yan, Zhongwei Chen, Yanni Zhao, Wei Le, Yanqing Xue, Sufyan Naseem, Ali Wafaa
Summary: Deformation twinning is an important phenomenon in the plastic deformation of metals and alloys, alongside dislocation slip. In this study, the plastic deformation behavior of coarse-grained aluminum with high stacking fault energy was investigated using in-situ tensile TEM. The findings reveal that deformation twins occur at the crack tip under continuous applied stress, with the thickness of deformation twin increasing as incoherent twin boundaries (ITBs) appear. Analysis shows that Frank partial dislocation in deformation twins decompose into perfect dislocation and Shockley partial dislocation under applied stress. These dislocations slip along crystal planes and react to form dislocation combinations that constitute the ITBs. The results provide researchers with a new perspective on the role of ITBs in deformation twinning and the formation of dislocation combinations in ITBs.
SCRIPTA MATERIALIA
(2022)
Article
Materials Science, Multidisciplinary
N. M. Krywopusk, L. J. Kecskes, T. P. Weihs
Summary: Processing of 99.9% pure, as-cast magnesium by Equal Channel Angular Extrusion significantly reduces grain size to around 30 μm after the second pass, but grain size varies after the third and fourth passes depending on extrusion rate. Slower rates lead to an increase in grain size after the third and fourth passes, while the fastest rate maintains relatively consistent grain size. The presence of twins in microstructures also varies with extrusion rate.
MATERIALS CHARACTERIZATION
(2021)
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
Crystallography
Yudong Lei, Mei Zhan, Hai Xin, Lifeng Ma, Yuan Yuan, Hongrui Zhang, Zebang Zheng
Summary: The initial texture effect of strain rate sensitivity in magnesium alloys was studied using quasi in situ electron backscatter diffraction. The strain accumulations showed strain rate dependency under uniaxial loading. For AZ31 magnesium sheets with strong basal texture, twinning first occurs at the onset of deformation, resulting in macroscopic strain rate insensitivity. With further loading, strain rate sensitivity increases significantly due to slip initiation. For WE43 alloy sheets with weak basal texture, overall deformation is sensitive to strain rate under both tensile and compression. Twinning growth rate and twinned volume fraction are used to identify twin-dominated or slip-dominated process during plastic deformation of magnesium alloy.
Article
Materials Science, Multidisciplinary
Tangqing Cao, Qian Zhang, Liang Wang, Lu Wang, Yao Xiao, Jiahao Yao, Huaiyi Liu, Yang Ren, Jun Liang, Yunfei Xue, Xiaoyan Li
Summary: High-entropy alloys (HEAs) possess unique microstructures and chemical compositions, resulting in remarkable mechanical properties. In this study, the mechanical behaviors and deformation mechanisms of CoCrFeNi HEAs under dynamic loading were investigated through experiments and simulations. The results showed significant strain rate sensitivity and strain-hardening capability of CoCrFeNi HEAs at high strain rates. The findings shed light on the design and fabrication of HEAs with excellent dynamic mechanical properties.
Article
Materials Science, Multidisciplinary
Chong Yang, Guoguo Zhu, Bin Li, Yan Peng, Baodong Shi
Summary: The difference in mechanical behavior between fixed-end and free-end torsion is investigated in this study. The end constraint affects the strain hardening behavior, with fixed-end torsion dominated by prismatic slip and free-end torsion exhibiting two stages of strain hardening. The axial effect is sensitive to forward and reversal torsion, and the difference in axial stress under fixed-end torsion is attributed to twin growth.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2022)
Article
Materials Science, Multidisciplinary
Sheng Wang, Hua Yang, Yuxiao Li, Lei Lu, Honglan Xie, Xiaoyi Liu, Ningbo Zhang
Summary: The effects of pre-strain induced preexisting dislocations on deformation twinning in a textured magnesium alloy are investigated using real-time synchrotron X-ray imaging and diffraction. Comparisons are made between samples with and without pre-strain. The study finds that while twinning can enhance strain hardening rate, the dislocations generated with pre-strain impede the motion and growth of twinning, resulting in reduced strain localization mitigation in the pre-strained sample compared to the as-received sample.
Article
Materials Science, Multidisciplinary
G. GARCES, A. CLEMENTE, J. MEDINA, P. PEREZ, A. STARK, N. SCHELL, P. ADEVA
Summary: The temperature evolution of the Hall-Petch parameters for basal slip and twinning systems in AZ31 alloy was studied using synchrotron radiation diffraction. It was found that although macroscopic plasticity is controlled by tensile twinning, the stress for the activation of basal slip can also be calculated. At low temperatures, the grain size dependence of twinning is higher than that of basal slip, but at 473 K, basal slip becomes the dominant factor.
Article
Materials Science, Multidisciplinary
Hui Yu, Junchao Ren, Shaoming Kang, Wei Yu, Zhifeng Wang, Jianhang Feng, Qingzhou Wang, Puguang Ji, Xin Zhang, Fuxing Yin
Summary: In this study, the high strain rate response of Mg-6wt%Er alloys with 1wt%Zn addition was investigated. It was found that the addition of Zn can enhance the strength of the alloy. The interaction between SFs and dislocations was analyzed, and it was observed that LAGBs can more easily transform into HAGBs at a high strain rate.
Article
Metallurgy & Metallurgical Engineering
Rameshkumar Varma, Sitarama Kada, Matthew Barnett
Summary: In this study, the effect of deformation on microstructure and thermoelectric properties of Mg2Sn alloys with excess magnesium concentrations was investigated. The alloys showed high plasticity at elevated temperatures, forming a substructure, and the thermoelectric performance was improved due to reduced thermal conductivity from phonon scattering at grain boundaries.
JOURNAL OF MAGNESIUM AND ALLOYS
(2021)
Article
Materials Science, Multidisciplinary
Alexander Jelinek, Stanislav Zak, Markus Alfreider, Daniel Kiener
Summary: Direct laser writing by two-photon lithography enables the manufacturing of tailored 3D objects with high precision. Mechanical properties of materials can be accessed through micromechanical testing. This study presents an approach to overcome the issue of undefined geometries by introducing a slight taper within the geometry at initially printed layers.
ADVANCED ENGINEERING MATERIALS
(2023)
Article
Materials Science, Multidisciplinary
Benjamin Seligmann, Markus Alfreider, Michael Wurmshuber, Daniel Kiener
Summary: Microelectronic devices require material systems combining multiple layers of material for proper operation. This study investigates the internal stress states and their influence on deformation behavior in a Si-WTi-Cu material system using in situ thermomechanical cantilever bending experiments. The experiments reveal that the Cu layer undergoes partial plastic deformation during heating, which may result in failure of devices. A model incorporating plastic deformation and known residual stresses is proposed and verified by Finite Element Analysis to assess the internal stress and strain states based on in situ observation.
ADVANCED ENGINEERING MATERIALS
(2023)
Article
Engineering, Biomedical
Michael Wurmshuber, Jana Wilmers, Jongil Kim, Sang Ho Oh, Swantje Bargmann, Daniel Kiener
Summary: The limpet tooth is considered as the strongest material in nature, with a reported strength value of up to 6.5 GPa. The recent discovery of microscale auxeticity in the tooth's leading part provides a possible explanation for this extreme strength. Through micromechanical experiments, it is found that the hardness values obtained from nanoindentation are lower than the strength observed in micropillar compression tests. This unique behavior is attributed to local tensile strains during indentation, resulting from the microscale auxeticity, leading to microdamage in the auxetic regions of the tooth microstructure.
ACTA BIOMATERIALIA
(2023)
Article
Materials Science, Multidisciplinary
Michael Wurmshuber, Markus Alfreider, Stefan Wurster, Michael Burtscher, Reinhard Pippan, Daniel Kiener
Summary: The brittleness of tungsten is a challenge for its application as a divertor material in nuclear fusion reactors. Grain refinement is a promising strategy to increase its fracture toughness, but it also promotes intercrystalline crack growth. This study explores the use of grain boundary doping with boron and hafnium to enhance the fracture toughness of ultrafine-grained tungsten. The results show that doping with boron and hafnium can improve the fracture toughness of ultrafine-grained tungsten, with values up to 27 MPa root m.
Article
Materials Science, Multidisciplinary
T. Kluensner, M. Krobath, R. Konetschnik, C. Tritremmel, V. Maier-Kiener, D. Samardzic, W. Ecker, C. Czettl, C. Mitterer, D. Kiener
Summary: In this study, micromechanical specimens were produced using focused ion beam milling to investigate the fracture behavior of rough substrate-coating interfaces with complex defect structure. It was found that a stable value of the maximum principal stress triggering fracture in the ceramic-ceramic interfaces was observed for inclination angles >= 45 degrees. The interface strength was determined by observing the crack path at the substrate-coating interface via scanning electron microscopy and analyzing the effectively loaded interface area values.
INTERNATIONAL JOURNAL OF REFRACTORY METALS & HARD MATERIALS
(2023)
Article
Chemistry, Physical
Gloria Graf, Malina Seyffertitz, Petra Spoerk-Erdely, Helmut Clemens, Andreas Stark, Lukas Hatzenbichler, David Holec, Michael Burtscher, Daniel Kiener, Xiaobing Li, Kui Liu
Summary: In order to promote the use of intermetallic γ-TiAl based alloys in the aircraft and automotive sector, recent research has focused on the development of low-cost titanium aluminides. The addition of manganese has shown potential to replace more expensive alloying elements and improve the ductility. However, Mn-containing alloys are prone to the formation of undesired brittle phases, which can affect the ductility. This study investigated the transformation kinetics and stability range of a specific brittle phase in a low-cost Ti-42Al-5Mn alloy using experimental and computational approaches. The results provide valuable insights for the future design of low-cost γ-TiAl based alloys.
Article
Materials Science, Multidisciplinary
Alexander Jelinek, Stanislav Zak, Megan J. Cordill, Daniel Kiener, Markus Alfreider
Summary: Two-photon lithography enables the design and characterization of novel micromechanical specimens, expanding the possibilities for miniaturized technologies. This study presents a methodology for automated specimen fabrication and testing, and analyzes the influence of parameters on the essential work of fracture. The findings provide a foundation for statistical fracture evaluation in other resin materials and thin film systems.
MATERIALS & DESIGN
(2023)
Article
Nanoscience & Nanotechnology
Michael Burtscher, Markus Alfreider, Christina Kainz, Daniel Kiener
Summary: The technical potential of WCu alloys is limited by the modest fracture characteristics of the material system in its coarse-grained condition. To address this, a W-50 at.% Cu composite with a nanocrystalline microstructure was processed using high-pressure torsion deformation. The resulting microstructures were quantified, and the mechanical properties were investigated. The study found that the processed specimens had smaller grain sizes and increased amount of mechanically intermixed W in the Cu grains. The mechanical properties of the processed specimens were comparable to those of the coarse-grained specimens.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2023)
Article
Chemistry, Multidisciplinary
Martin Stueckler, Stefan Wurster, Markus Alfreider, Michael Zawodzki, Heinz Krenn, Andrea Bachmaier
Summary: This study investigates the structural evolution and magnetic properties of Co-Zr composite through high-pressure torsion processing and subsequent thermal treatment. The results demonstrate that severe plastic deformation can result in an amorphous microstructure with low coercivity and different annealed states can further modify the magnetic properties.
Review
Materials Science, Multidisciplinary
Daniel Kiener, Michael Wurmshuber, Markus Alfreider, Gerald J. K. Schaffar, Verena Maier-Kiener
Summary: Nanoindentation techniques have been greatly improved by continuous stiffness monitoring capabilities, allowing for comprehensive characterization of hardness, elastic modulus, and plastic properties. By combining different methods and improving experimental conditions, insights into material behavior under extreme conditions can be achieved.
CURRENT OPINION IN SOLID STATE & MATERIALS SCIENCE
(2023)
Article
Chemistry, Physical
Michael Burtscher, Irmgard Weibensteiner, Reinhold Wartbichler, Katharina Kirchheimer, Christian Bernhard, Daniel Kiener, Helmut Clemens
Summary: This study analyzed the effect of C on the TNM alloying system using differential scanning calorimetry measurements, heat treatments, and electron microscopy analysis. The results showed that adding C can raise the service temperature of the alloy and promote the precipitation of hexagonal carbides. The orientation relationships between the TiAl phases and the carbides were also determined.
JOURNAL OF ALLOYS AND COMPOUNDS
(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.