Results 51 to 60 of about 15,379 (289)

Hardness-Depth Relationship with Temperature Effect for Single Crystals—A Theoretical Analysis

Crystals, 2020
In this paper, a mechanistic model is developed to address the effect of temperature on the hardness-depth relationship of single crystals. Two fundamental hardening mechanisms are considered in the hardness model, including the temperature dependent ...
Hao Liu, Long Yu, Xiazi Xiao
doaj   +1 more source

Continuum dynamics of the formation, migration and dissociation of self-locked dislocation structures on parallel slip planes

, 2016
In continuum models of dislocations, proper formulations of short-range elastic interactions of dislocations are crucial for capturing various types of dislocation patterns formed in crystalline materials.
Niu, Xiaohua, Xiang, Yang, Zhu, Yichao
core   +2 more sources

Calculation of Geometrically Necessary Dislocation Density within Planar Discrete Dislocation Plasticity: Application to Cyclic Loading

European Journal of Mechanics - A/Solids
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Y. Piao, N.G. Prastiti, S. Waheed, D.S. Balint   +3 more
openaire   +1 more source

Toughening and Hardening Limited Zone of High-Strength Steel through Geometrically Necessary Dislocation When Exposed to Electropulsing

Materials, 2022
The enhancement of both low-temperature impact toughness and the hardness of a high strength steel heat-affected zone (HAZ) is investigated by using high-density electropulsing (EP).
Yunfeng Xiong, Zongmin Li, Tao Liu
semanticscholar   +1 more source

Local measurement of geometrically necessary dislocation densities and their strengthening effect in ultra-high deformed pearlite

Materials Characterization, 2023
The strength of pearlitic wires can be increased by cold-drawing to a world record level for bulk ductile materials of 7 GPa. The underlying strengthening mechanisms are not fully understood, as the application of usual characterization is challenging because of the small grain sizes and the high degree of deformation.
Li, Y., Goto, S., Kostka, A., Herbig, M.
openaire   +2 more sources

On the Lightweight Potential of Laser Additive Manufactured NiTi Triply Periodic Minimal Sheet Lattices

Advanced Engineering Materials, EarlyView.
This study explores the lightweight potential of laser additive‐manufactured NiTi triply periodic minimal surface sheet lattices. It systematically investigates the effects of relative density and unit cell size on surface quality, deformation recovery, compression behavior, and energy absorption.
Haoming Mo, Shuo Qu, Shiming Gao, Xu Song   +3 more
wiley   +1 more source

Density-based crystal plasticity : from the discrete to the continuum

, 2016
Because of the enormous range of time and space scales involved in dislocation dynamics, plastic modeling at macroscale requires a continuous formulation.
Appolaire, B., Bouar, Y. Le, Finel, A., Valdenaire, P. L.   +3 more
core   +3 more sources

Quasi in-situ analysis of geometrically necessary dislocation density in α-fibre and γ-fibre during static recrystallization in cold-rolled low-carbon Ti-V bearing microalloyed steel

Materials Characterization, 2018
In the present study, cold-rolled low-carbon steel is annealed at three different conditions: 700 oC for 0 s, 800 oC for 0 s and 800 oC for 2 min at the heating rate of ~10 oC/s.
Ishwar Kapoor, Y. Lan, A. Rijkenberg, Zushu Li, V. Janik   +4 more
semanticscholar   +1 more source

Three-dimensional maps of geometrically necessary dislocation densities in additively manufactured Ni-based superalloy IN718

International Journal of Plasticity, 2020
Abstract In this work, we present a method to characterize the subgranular three-dimensional distribution of geometrically necessary dislocations (GNDs) and apply it to an additively manufactured (AM) Ni-based superalloy IN718. A three-dimensional (3D) Electron Backscatter Diffraction (EBSD) data set was obtained using TriBeam tomography with ...
Wyatt A. Witzen, Andrew T. Polonsky, Tresa M. Pollock, Irene J. Beyerlein   +3 more
openaire   +2 more sources

Packaging of Macroscopic Material Payloads: Needs, Challenges, Concepts, and Future Directions

Advanced Engineering Materials, EarlyView.
This review introduces a unified framework that decomposes any macroscopic packaging system into the payload, packaging material, and packaging strategy and combines them into a conceptual packaging equation: packaging strategy = payload + packaging material.
Venkata S. R. Jampani, Manos Anyfantakis
wiley   +1 more source