Category Ranking
98%
Total Visits
921
Avg Visit Duration
2 minutes
Citations
20
Article Abstract
Pre-plastic deformation (PPD) treatments on bulk metallic glasses (BMGs) have previously been shown to be helpful in producing multiple shear bands. In this work, the applicability of the PPD approach on BMGs with different Poisson's ratios was validated based on experimental and simulation observations. It was found that for BMGs with high Poisson's ratios (HBMGs, e.g., ZrCoAl and ZrCuAl), the PPD treatment can easily trigger a pair of large plastic deformation zones consisting of multiple shear bands. These PPD-treated HBMGs clearly display improved strength and compressive plasticity. On the other hand, the mechanical properties of BMGs with low Poisson's ratios (LBMG, e.g., FeCrMoYCB) become worse due to a few shear bands and micro-cracks in extremely small plastic deformation zones. Additionally, for the PPD-treated HBMGs with similar high Poisson's ratios, the ZrCoAl BMG exhibits much larger plasticity than the ZrCuAl BMG. This phenomenon is mainly due to more defective icosahedral clusters in the ZrCoAl BMG, which can serve as nucleation sites for shear transformation zones (STZs) during subsequent deformation. The present study may provide a basis for understanding the plastic deformation mechanism of BMGs.
Download full-text PDF |
Source |
|---|---|
| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC9654271 | PMC |
| http://dx.doi.org/10.3390/ma15217574 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Cell-Stress-Free Percutaneous Bioelectrodes.
Adv Mater
September 2025
Department of Mechanical Engineering, Pohang University of Science and Technology, Pohang, 37673, South Korea.
Wearable bioelectronics have advanced dramatically over the past decade, yet remain constrained by their superficial placement on the skin, which renders them vulnerable to environmental fluctuations and mechanical instability. Existing microneedle (MN) electrodes offer minimally invasive access to dermal tissue, but their rigid, bulky design-often 100 times larger and 10,000 times stiffer than dermal fibroblasts-induces pain, tissue damage, and chronic inflammation, limiting their long-term applicability. Here, a cell-stress-free percutaneous bioelectrode is presented, comprising an ultrathin (<2 µm), soft MN (sMN) that dynamically softens via an effervescent structural transformation after insertion.
View Article and Find Full Text PDFStrain-induced instabilities of graphene under biaxial stress.
J Chem Phys
September 2025
Instituto de Ciencia de Materiales de Madrid (ICMM), Consejo Superior de Investigaciones Científicas (CSIC), Campus de Cantoblanco, 28049 Madrid, Spain.
The mechanical properties of graphene are investigated using classical molecular dynamics simulations as a function of temperature T and external stress τ. The elastic response is characterized by calculating elastic constants via three complementary methods: (i) numerical derivatives of stress-strain curves, (ii) analysis of cell fluctuation correlations, and (iii) phonon dispersion analysis. Simulations were performed with two interatomic models: an empirical potential and a tight-binding electronic Hamiltonian.
View Article and Find Full Text PDFA novel personalized time-varying biomechanical model for estimating lung tumor motion and deformation.
Med Phys
August 2025
Department of Radiation Oncology, Chongqing University Cancer Hospital, Chongqing, People's Republic of China.
Background: Accurate prediction of lung tumor motion and deformation (LTMD) is essential for precise radiotherapy. However, existing models often rely on static, population-based material parameters, overlooking patient-specific and time-varying lung biomechanics. Personalized dynamic models that capture temporal changes in lung elasticity are needed to improve LTMD prediction and guide treatment planning more effectively.
View Article and Find Full Text PDFComputational investigation of mechanical properties and adsorption behavior of sulfur-doped h-BN nanosheets.
Sci Rep
September 2025
Department of Physical Chemistry, Faculty of Chemistry, University of Kashan, Kashan, Iran.
Doping h-BN surface with sulfur has been shown to enhance its efficiency in photocatalytic reactions. Here, using density functional theory calculations, the various configurations of S-doped h-BN were investigated in terms of their formation energy, mechanical properties, structural, thermodynamic, and electronic properties, as well as their ability to adsorb metal atoms and hydrogen molecule. The formation energy of S-doped h-BN surfaces is only slightly more positive compared to the pristine surface.
View Article and Find Full Text PDFHigh Robustness and Multistability of Small Mesoscale Continuous GFRP Metamaterials: Novel Möbius Strip Structure.
Adv Mater
September 2025
School of Fashion and Textiles, The Hong Kong Polytechnic University, Hung Hom, Hong Kong, 999077, P. R. China.
Fiber-reinforced polymer composite mechanical metamaterials have emerged as promising candidates for multifunctional structural applications owing to their exceptional strength-to-weight ratios. However, achieving concurrent high stiffness, high strength, and large recoverable strain in such structures remains challenging due to inherent trade-offs between these properties. To address this limitation, a novel Möbius-inspired metamaterial through optimized fiber orientation design is developed.
View Article and Find Full Text PDF