Results 31 to 40 of about 8,297 (199)

Modelling Hydrogen Embrittlement using Density Functional Theory: A theoretical approach to understanding environmentally assisted cracking in 7xxx series aluminium alloys [PDF]

MATEC Web of Conferences, 2020
The effects of H segregation to a Σ11 symmetric tilt Al grain boundary are investigated using atomistic simulations, as part of a wider study on cracking in 7xxx series alloys.
Wilson Benjamin T., Robson Joseph D., Race Christopher P.   +2 more
doaj   +1 more source

Role of segregation behavior of Cu and Sb in the region of inclusions on initial corrosion

npj Materials Degradation, 2023
The distribution characteristics of corrosion-resistant elements in low-alloy steel affected the initial corrosion behavior of the matrix. In this article, the segregation behaviors of elements at grain boundaries and pearlite defects in low-alloy steel ...
Zhaoliang Li, Junhang Chen, Wei Xue, Chenghui Yin, Jialiang Song, Kui Xiao   +5 more
doaj   +1 more source

Realization of structural evolution in grain boundary, solute redistribution and improved mechanical properties by adding TiCnps in wire and arc additive manufacturing 2219 aluminium alloy

Journal of Materials Research and Technology, 2021
Non-equilibrium solidification and experienced thermal conditions of deposited 2219 aluminium alloy during wire and arc additive manufacturing (WAAM) result in the grain boundary segregation, which makes it difficult to avoid the appearance of columnar ...
Peng Jin, Yibo Liu, Fuxiang Li, Junzhao Li, Qingjie Sun   +4 more
doaj   +1 more source

Experimental characterization and atomistic simulation of grain boundary segregation in Mg-Y alloys

Journal of Magnesium and Alloys
As a rare earth solute element in Mg alloys, Y has the beneficial effects of increasing both the strength and the ductility as well as weakening the crystallographic texture.
Qianying Shi, Vaidehi Menon, Liang Qi, John Allison   +3 more
doaj   +1 more source

Improvement of strength and ductility synergy and the elimination of the yield point phenomenon of ultrafine-grained Mg–Al–Zn–Ag alloy sheet

Journal of Materials Research and Technology, 2023
Strength and ductility synergy in ultrafine-grained AZQ310 alloy sheet was successfully improved at the expense of grain boundary segregation via multi-pass rolling.
Jie Feng, Lianpeng Zhang, Yufeng Zhang, Guizhen Feng, Chen Wang, Wenbin Fang   +5 more
doaj   +1 more source

Computed entropy spectra for grain boundary segregation in polycrystals

npj Computational Materials
Grain boundary solute segregation influences most bulk material properties, and understanding solute thermodynamics at grain boundaries is critical for engineering them.
Nutth Tuchinda, Christopher A. Schuh
doaj   +1 more source

Effects of B and Ce Grain Boundary Segregation on Precipitates in Super Austenitic Stainless Steel

Metals, 2023
In order to reduce the segregation of Cr and Mo and inhibit the precipitates, we added a small amount of B and Ce to traditional S31254 steel. Using an air-cooling and low-temperature diffusion treatment, the purpose was to control B and Ce at the grain ...
Song Yang, Jinyao Ma, Chao Chen, Caili Zhang, Junyu Ren, Zhouhua Jiang, Guangwei Fan, Peide Han   +7 more
doaj   +1 more source

Grain boundary structural transformation induced by co-segregation of aliovalent dopants

Nature Communications, 2022
The effect of aliovalent doping on grain boundary is not yet fully understood at the atomic level. Here, the authors report grain boundary structural transformation in α-Al2O3 is induced by co-segregation of multiple dopants using atomic-resolution ...
Toshihiro Futazuka, Ryo Ishikawa, Naoya Shibata, Yuichi Ikuhara   +3 more
doaj   +1 more source

GRAIN BOUNDARY SEGREGATION OF B IN Ni

, 1988
Grain boundary segregation of boron in nickel has been investigated using secondary ion mass spectrometry and FIM-AP techniques. Preliminary results show that segregation is of the equilibrium type which means that boron was concentrated to a few atomic ...
K. STILLER
core   +1 more source

Grain Boundary Segregation and Energy in Multiphase Oxide Ceramics [PDF]

, 2021
The properties of polycrystalline ceramics are dependent on the properties of their constituents: grains, surfaces, and grain boundaries. Grain boundary behavior has been widely studied for different ceramics, particularly single-phase systems with added
SYED, KOMAL
core