Results 21 to 30 of about 67,459 (314)

Atomistic Simulation Study of Grain Boundary Segregation and Grain Boundary Migration in Ni-Cr Alloys

Metals
Using Molecular Dynamics (MD) and Monte Carlo (MC) simulations, we studied the grain boundary (GB) segregation under different temperatures and Cr concentrations in Ni-Cr alloys with two distinct grain-boundary structures, i.e., Σ5(310)[010] and Σ101(200)
Pengwei Huang, Qixin Xiao, Wangyu Hu, Bowen Huang, Dingwang Yuan   +4 more
doaj   +1 more source

Molecular Dynamics Calculations of Grain Boundary Mobility in CdTe

Nanomaterials, 2019
Molecular dynamics (MD) simulations have been applied to study mobilities of Σ3, Σ7 and Σ11 grain boundaries in CdTe. First, an existing MD approach to drive the motion of grain boundaries in face-centered-cubic and body-centered-cubic ...
Rodolfo Aguirre, Sharmin Abdullah, Xiaowang Zhou, David Zubia   +3 more
doaj   +1 more source

The grain boundary mobility tensor [PDF]

Proceedings of the National Academy of Sciences, 2020
Significance Defects and microstructures have a profound impact on material strength and ductility. Microstructure engineering can enhance/trade-off between these properties. One of the key parameters that dictates microstructure evolution is grain-boundary mobility.
Jian Han, Jian Han, David J. Srolovitz, David J. Srolovitz, Kongtao Chen, Xiaoqing Pan   +5 more
openaire   +6 more sources

Study on deviation distribution of Σ3 and Σ9 boundaries in Hastelloy C-276 superalloy with different hot rolling reductions

Journal of Materials Research and Technology, 2023
In this study, the deviation distributions of Σ3 and Σ9 grain boundaries in a Hastelloy C-276 sheet were measured using electron backscatter diffraction technology (EBSD) and the grain boundary plane orientation was analyzed using a five-parameter ...
Shengli Guo, Xiaoyu Zhang, Jun Zhong, Shuaishuai Wu, Wei Jiang   +4 more
doaj  

Analytical Modeling and Computer Simulation of the Transformation of Ellipsoids Nucleated on Random Parallel Planes [PDF]

Materials Research, 2020
A considerable number of engineering materials is polycrystalline. Cahn proposed analytical expressions for transformations nucleated at the grain faces, triple junctions, and quadruple junctions.
Gabriella Maria Silveira de Sá, Harison da Silva Ventura, Weslley Luiz da Silva Assis, Elena Villa, Paulo Rangel Rios   +4 more
doaj   +1 more source

A model for grain boundary thermodynamics

RSC Advances, 2020
Density-based grain boundary thermodynamic assessment based on available bulk thermodynamic data teaches a pragmatic way to unlock microstructure defects engineering.
Reza Darvishi Kamachali, Reza Darvishi Kamachali   +1 more
openaire   +4 more sources

Effect of Grain Size on Grain Boundary Segregation Thermodynamics of Phosphorus in Interstitial-Free and 2.25Cr-1Mo Steels

Metals, 2017
Several grain sizes were obtained by heat treatment at different temperatures for interstitial-free (IF) and 2.25Cr-1Mo steels. Samples of the steels with different grain sizes were aged at 600 and 680 °C for IF steel and 520 and 560 °C for 2.25Cr-1Mo ...
Yu Zhao, Shenhua Song, Hong Si, Kai Wang
doaj   +1 more source

Redox‐dependent binding and conformational equilibria govern the fluorescence decay of NAD(P)H in living cells

FEBS Letters, EarlyView.
In this work, we reveal how different enzyme binding configurations influence the fluorescence decay of NAD(P)H in live cells using time‐resolved anisotropy imaging and fluorescence lifetime imaging microscopy (FLIM). Mathematical modelling shows that the redox states of the NAD and NADP pools govern these configurations, shaping their fluorescence ...
Thomas S. Blacker, Nimit Mistry, Nicoletta Plotegher, Elizabeth R. Westbrook, Michael D. E. Sewell, John Carroll, Gyorgy Szabadkai, Angus J. Bain, Michael R. Duchen   +8 more
wiley   +1 more source

The Annealing Twins of Fe-20Mn-4Al-0.3C Austenitic Steels during Symmetric and Asymmetric Hot Rolling

Metals, 2018
The present work investigates the annealing twins of Fe-20Mn-4Al-0.3C austenitic steels in symmetric hot rolling (SHR) and asymmetric hot rolling (ASHR).
Changsheng Li, Biao Ma, Yanlei Song, Kun Li, Jingbo Dong   +4 more
doaj   +1 more source

Arrangement and Decomposition of Grain Boundary Dislocations: Two-Mode Phase-Field Crystal Simulation

Frontiers in Materials, 2022
The grain-boundary dislocation arrangement and decomposition during constant-volume deformation of a nanoscale bi-crystal system in fcc-structured materials were studied by using the two-mode phase-field crystal (2PFC) method.
Huanqing Li, Xiaona Wang, Haibin Zhang, Xiaolin Tian, Hua Hou, Yuhong Zhao, Yuhong Zhao   +6 more
doaj   +1 more source