Results 91 to 100 of about 3,655,387 (198)

The Control of Flow Localization in the Post Severe Plastic Deformation (SPD) Forming of Aluminum Through the Application of Low Strain Amplitude Multidirectional (LSA-MDF) Forging [PDF]

Materials Research
Severe Plastic Deformation (SPD) of metals leads to their strengthening and losses in the work hardening capacity. The latter causes flow localization upon subsequent forming of the material.
C.G. de Faria, M.T.P. Aguilar, P.R. Cetlin   +2 more
doaj   +1 more source

Corner detection based on shearlet transform and multi-directional structure tensor

, 2020
Image corners have been widely used in various computer vision tasks. Current multi-scale analysis based corner detectors do not make full use of the multi-scale and multi-directional structural information.
Mingzhe Wang, Zhang, W, Weichuan Zhang, Changming Sun, Sun, C, Wang, M, Arcot Sowmya, Sowmya, A   +7 more
core   +1 more source

Numerical Investigation on the Strain Evolution of Ti-6Al-4V Alloy during Multi-directional Forging at Elevated Temperatures

High Temperature Materials and Processes, 2018
Multi-directional forging (MDF) is one of the most promising severe plastic deformation (SPD) methods used in fabricating large-scale bulk metal materials with ultra-fine grains (UFG). A finite element model for MDF is developed to investigate the strain
Yan Chenkan, Shen Jun, Lin Peng
doaj   +1 more source

Grain Growth Model of Ultra-Fine Grain AZ80 Magnesium Alloy Multi-Directionally Forged During the Isothermal Heating Process

Medžiagotyra, 2019
This paper takes the ultra-fine grain AZ80 magnesium alloy multi-directionally forged as the research object. We observe its heating behavior at 673 K with an optical microscope, analyze the grain size distribution, and the change of average grain size ...
Jinlong ZHANG, Hui XIE, Ying MA, Shiping TAO, Kun ZHAO, Weigang WU   +5 more
doaj   +1 more source

The Effect of Isothermal Multi-Directional Forging on the Grain Structure, Superplasticity, and Mechanical Properties of the Conventional Al–Mg-Based Alloy

Metals, 2019
The current study observed a grain structure evolution in the central part and periphery of the sample of an Al–Mg–Mn-based alloy during isothermal multidirectional forging (IMF) at 350 °C with a cumulative strain of 2.1–6.3 and a ...
Anastasia V. Mikhaylovskaya, Anton D. Kotov, Mikhail S. Kishchik, Alexey S. Prosviryakov, Vladimir K. Portnoy   +4 more
doaj   +1 more source

Multi-scale interactions governing dynamic recrystallization: Coupled fragmentation of coarse T/η phases, DIP-induced MgZn2, and Al3(Sc,Zr) dispersoids in a high-alloy Al–Zn–Mg–Cu–Zr–Sc alloy

Journal of Materials Research and Technology
Understanding how multi-scale second phases interact during thermomechanical processing is essential for controlling dynamic recrystallization (DRX) in highly alloyed 7xxx aluminum systems.
Junhua Cheng, Hongbang Shao, Jinchuan Wen, Yu Liu, Yuhui Wang, Yuanchun Huang   +5 more
doaj   +1 more source

Effect of pre-induced twinning on microstructure and tensile ductility in GW92K magnesium alloy during multi-direction forging at decreasing temperature

Journal of Magnesium and Alloys, 2014
Effect of pre-induced twinning on the microstructure evolution and mechanical properties of extruded Mg-9.26Gd-2.08Y-0.36Zr (GW92K) alloy have been investigated during multi-direction forging with large strains at decreasing temperature from 400 °C to ...
S.Q. Li, W.N. Tang, R.S. Chen, W. Ke
doaj   +1 more source

Dual-Band Multi-Pole Directional Filter for Microwave Multiplexing Applications [PDF]

, 2011
A novel microstrip directional filter for multiplexing applications is presented. This device uses composite right-left-handed transmission lines and resonators to achieve dual-band frequency response.
ALONSO CORONA CHAVEZ, JOSE LUIS OLVERA CERVANTES, Humberto Lobato Morales, Tatsuo Itoh   +3 more
core  

Influence of the constitutive flow law in FEM simulation of the Radial forging process [PDF]

, 2013
Radial forging is a widely used forming process for manufacturing hollow products in transport industry. As the deformation of the workpiece, during the process, is a consequence of a large number of high-speed strokes, the Johnson-Cook constitutive law (
Gueye, Babacar, Pantalé, Olivier, Babacar Gueye, Olivier Pantalé   +3 more
core   +1 more source

Synergistic enhancement of strength and toughness of β-Ti alloy with a fine grain: Effect of deformation temperature [PDF]

MATEC Web of Conferences
It is difficult for as-cast titanium alloys to achieve high strength and toughness due to the presence of coarse β grains. In this study, multi-directional forging (MDF) was employed to break down the coarse β grains into fine grains and the mechanism of
Li Yili, Fang Hongze, Sun Shichen, Yu Jichang, Chen Ruirun   +4 more
doaj   +1 more source