Results 41 to 50 of about 203,967 (191)
Prediction of grain boundary structure and energy by machine learning [PDF]
, 2015 Grain boundaries dramatically affect the properties of polycrystalline materials because of differences in atomic configuration. To fully understand the relationship between grain boundaries and materials properties, systematic studies of the grain boundary atomic structure are crucial.
arxiv +1 more source
Effects of Grain Boundary Morphologies on Stress Corrosion Cracking of Alloy 600
Archives of Metallurgy and Materials, 2017 Effects of grain boundary morphologies on stress corrosion cracking (SCC) of Alloy 600 have been studied in 40% NaOH at 315°C using C-ring specimens. The configuration of the grain boundary and the intergranular carbide density were controlled by heat ...
Kim H.P. +5 more
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Metals, 2021 Self-induced internal corrosion stress transgranular cracking is investigated theoretically and experimentally linking grain boundary wetting (GBW) and grain boundary diffusion (GBD) to improve the ability to reveal the micro mechanism of crack in ...
Xianjun Lei +4 more
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Effect of grain boundary character on segregation-induced structural transitions [PDF]
Phys. Rev. B 93, 134113 (2016), 2016 Segregation-induced structural transitions in metallic grain boundaries are studied with hybrid atomistic Monte Carlo/molecular dynamics simulations using Cu-Zr as a model system, with a specific emphasis on understanding the effect of grain boundary character. With increasing global composition, the six grain boundary types chosen for this study first
arxiv +1 more source
A new approach to grain boundary engineering for nanocrystalline materials
Beilstein Journal of Nanotechnology, 2016 A new approach to grain boundary engineering (GBE) for high performance nanocrystalline materials, especially those produced by electrodeposition and sputtering, is discussed on the basis of some important findings from recently available results on GBE ...
Shigeaki Kobayashi +2 more
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Metals, 2022 Heat treatments, including solution treatment and isothermal heat treatment, were conducted to investigate the grain boundary serration of GH4975 superalloy.
Shuo Huang +5 more
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Spatial distribution of local elastic moduli in nanocrystalline metals [PDF]
Elastoplastic properties of nanocrystalline metals are non-uniform on the scale of the grain size, and this non-uniformity affects macroscopic quantities as, in these systems, a significant part of the material is at or adjacent to a grain boundary. We use molecular dynamics simulations to study the spatial distributions of local elastic moduli in ...
arxiv +1 more source
Tilt Grain-Boundary Effects in S- and D-Wave Superconductors [PDF]
, 1998 We calculate the s- and d-wave superconductor order parameter in the vicinity of a tilt grain boundary. We do this self-consistently within the Bogoliubov de Gennes equations, using a realistic microscopic model of the grain boundary. We present the first self-consistent calculations of supercurrent flows in such boundaries, obtaining the current-phase
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Structural and electronic properties of grain boundaries in graphite: Planes of periodically distributed point defects [PDF]
, 2008 We report on scanning tunneling microscopy and spectroscopy of grain boundaries in highly oriented pyrolytic graphite. Grain boundaries showed a periodic structure and an enhanced charge density compared to the bare graphite surface. Two possible periodic structures have been observed along grain boundaries.
arxiv +1 more source
Development of the FE In-House Procedure for Creep Damage Simulation at Grain Boundary Level
Metals, 2019 A two-dimensional (2D) finite element framework for creep damage simulation at the grain boundary level was developed and reported. The rationale for the paper was that creep damage, particularly creep rupture, for most high temperature alloys is due to ...
Qiang Xu, Jiada Tu, Zhongyu Lu
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