Results 11 to 20 of about 7,286,183 (302)

Crystal Plasticity Modeling of Dislocation Density Evolution in Cellular Dislocation Structures

Metals
The complex thermal cycles during the solidification process in metal additive manufacturing (AM) lead to the formation of high-density dislocation networks, organizing into submicron-scale cellular structures.
Md Mahabubur Rohoman, Caizhi Zhou
doaj   +2 more sources

High dislocation density of tin induced by electric current

AIP Advances, 2015
A dislocation density of as high as 1017 /m2 in a tin strip, as revealed by high resolution transmission electron microscope, was induced by current stressing at 6.5 x 103 A/ cm2. The dislocations exist in terms of dislocation line, dislocation loop, and
Yi-Han Liao, Chien-Lung Liang, Kwang-Lung Lin, Albert T. Wu   +3 more
doaj   +2 more sources

The dislocation configurational energy density in discrete dislocation plasticity [PDF]

Journal of the mechanics and physics of solids, 2019
Dislocation configurational energy is the term assigned to describe the elastically-stored energy associated with the interaction of dislocations and their structures.
Ze-Bang Zheng, N. Prastiti, D. Balint, F. Dunne   +3 more
semanticscholar   +2 more sources

Assessment of Dislocation Density by Various Techniques in Cold Rolled 1050 Aluminum Alloy

Metals, 2021
This study examines the evolution of dislocation density in cold rolled 1050 Al alloy. Various techniques such as numerical approaches, indentation techniques, X-ray diffraction line profile analysis, and electron backscattering diffraction were employed
J. Sidor, P. Chakravarty, János György Bátorfi, P. Nagy, Qing-Ge Xie, J. Gubicza   +5 more
semanticscholar   +1 more source

Dislocation Density of Electron Beam Powder Bed Fusion Ti–6Al–4V Alloys Determined via Time-Of-Flight Neutron Diffraction Line-Profile Analysis

Metals, 2022
Ti–6Al–4V alloys undergo a multiple phase transformation sequence during electron beam powder bed fusion (EB-PBF) additive manufacturing, forming unique dislocation substructures.
Kenta Yamanaka, Manami Mori, Yusuke Onuki, Shigeo Sato, Akihiko Chiba   +4 more
doaj   +1 more source

Study on the Microscopic Mechanism of Axle Steel EA4T during Uniaxial Cyclic Deformation Process

Metals, 2023
In order to reveal the dislocation evolution law of body-centered cubic axle steel EA4T during cyclic deformation and provide an experimental basis for the subsequent construction of cyclic constitutive models based on microscopic physical mechanisms ...
Xuehong Ren, Shaopu Yang, Wenjie Zhao, Guilin Wen   +3 more
doaj   +1 more source

Quantifying internal strains, stresses, and dislocation density in additively manufactured AlSi10Mg during loading-unloading-reloading deformation

, 2021
The plastic deformation of the AlSi10Mg alloy manufactured via laser powder bed fusion (LPBF) is incompatible at the microscale, which causes residual strains/stresses and dislocation pile-ups at the Al/Si interfaces and grain boundaries. Hence, it is of
X.-X. Zhang, H. Andrä, S. Harjo, W. Gong, T. Kawasaki, A. Lutz, M. Lahres   +6 more
semanticscholar   +1 more source

Study of dislocation-twin boundary interaction mechanisms in plastic deformation of TWIP steel by discrete dislocation dynamics and dislocation density-based modeling

, 2021
Deformation twins contribute to the unique deformation behaviors and characteristics in the plastic deformation of TWIP steels since twin boundary (TB) blocks the movement of dislocations and absorbs them in deformation process.
Xiang-Ru Guo, Chao-Yang Sun, Chunhui Wang, Jun Jiang, Mw W. Fu   +4 more
semanticscholar   +1 more source

Mn content optimum on microstructures and mechanical behavior of Fe-based medium entropy alloys

Materials & Design, 2022
Fe-XMn-5Si-10Cr-0.9C (X = 10, 15, 20, and 25 wt%) medium entropy alloys (MEAs) with different Mn contents were prepared by magnetic suspension melting in a water-cooled copper crucible, and casted in a negative pressure suction copper mould. The modified
Yanchun Zhao, Huwen Ma, Linhao Zhang, Dong Zhang, Shengzhong Kou, Bo Wang, Wensheng Li, Peter K. Liaw   +7 more
doaj   +1 more source

Microstructural Evolution along the NiCrMoV Steel Welded Joints Induced by Low-Cycle Fatigue Damage

Metals, 2021
The degradation of mechanical properties of materials is essentially related to microstructural changes under service loadings, while the inhomogeneous degradation behaviors along welded joints are not well understood.
Shuo Weng, Yuhui Huang, Mingliang Zhu, Fuzhen Xuan   +3 more
doaj   +1 more source