Results 21 to 30 of about 48,269 (303)

Influence of choked angle of bearing channel on profile grain structure during multi-hole extrusion of aluminum alloy [PDF]

open access: yes, 2018
Direct extrusion of aluminum alloy EN AW-6060 was carried out applying a four-hole die with pair-wise parallel and choked long channels. Due to the dissimilar friction inside parallel and choked channels profiles with different length were extruded ...
Müller, Sören, Sanabria, Vidal
core   +1 more source

Microstructure evolution and flow stress modeling of SA508Gr.4N steel during hot deformation process

open access: yesCailiao gongcheng, 2021
The isothermal deformation behavior of Ni-Cr-Mo low alloy SA508Gr.4N steel at deformation temperature of 850-1200 ℃, strain rate of 0.001-1 s-1, and true strain of 0.9 was studied by using Gleeble-1500D thermal simulation testing machine.The physically ...
QIAO Shi-bin   +4 more
doaj   +1 more source

Flow stress and hot deformation activation energy of 6082 aluminium alloy influenced by initial structural state [PDF]

open access: yes, 2019
Stress-strain curves of the EN AW 6082 aluminium alloy with 1.2 Si-0.51 Mg-0.75 Mn (wt.%) were determined by the uniaxial compression tests at temperatures of 450-550 degrees C with a strain rate of 0.5-10 s(-1).
Kawulok, Petr   +5 more
core   +1 more source

Deformation-activated recrystallization twin: New twinning path in pure aluminum enabled by cryogenic and rapid compression

open access: yesiScience, 2022
Summary: Bulk aluminum rarely forms deformation or annealing twins owing to its high stacking fault energy. We report a novel twinning mechanism mediated by dynamic recrystallization in 6N pure aluminum under high strain rate (∼1.3 × 104 s−1) impact at a
Mao Liu   +6 more
doaj   +1 more source

Dynamic recrystallization analysis of reduction pretreatment process by multi-phase field method

open access: yesMaterials Research Express, 2020
The reduction pretreatment (RP) process is an effective method to improve billet quality, and the deformation recrystallization plays an important role in the process.
Hongqiang Liu   +5 more
doaj   +1 more source

Dynamic recrystallization behavior and microstructure evolution of high-Mn austenitic steel for application in a liquefied natural gas carrier

open access: yesJournal of Materials Research and Technology, 2023
The hot-working behavior of high-Mn austenitic steel for liquefied natural gas carriers at the deformation temperature in the range of 1073–1273 K and the strain rate in the range of 0.01–10 s−1 was studied on a Gleeble-3800 thermomechanical simulator ...
Peng Zhang   +9 more
doaj   +1 more source

Microstructure control during twin roll casting of an AZ31 magnesium alloy [PDF]

open access: yes, 2012
The existing twin roll casting technique for magnesium alloys suffers heterogeneity in both microstructure and chemistry and downstream processing is required to improve the strip quality, resulting in cost rise.
Ferry M, I Bayandorian, Y Huang, Z Fan
core   +1 more source

Dynamic recrystallization behavior and microstructure evolution of low-density high-strength Fe–Mn–Al–C steel

open access: yesJournal of Materials Research and Technology, 2021
The hot deformation behavior of low-density high-strength Fe–Mn–Al–C steel at T = 900–1150 °C and ε˙ = 0.01–10 s−1 is studied using the Gleeble-3500 thermo-mechanical simulator.
Peng Wan   +5 more
doaj   +1 more source

Zjemňování zrna protlačované hořčíkové slitiny AZ31 procesem Ecap [PDF]

open access: yes, 2017
Extruded Mg – 3%Al – 1% Zn (AZ31) magnesium alloy was subjected to ECAP (Equal Channel Angular Pressing) processing at 523 K (250 °C). At the processing temperature of 523 K, fine grains with the average grain size of 2 – 3 μm are formed as a result of ...
Hilšer, Ondřej   +3 more
core   +1 more source

Dynamic Recrystallization of Torsion Deformed NiAl

open access: yesMaterials Science Forum, 2005
Polycrystalline samples of NiAl have been deformed in torsion in the temperature range 800K – 1300K. Deformation is accompanied by dynamic recrystallization, which with increasing temperature changes from continuous to discontinuous mode. Emphasis was put on the occurrence of continuous dynamic recrystallization, which will be discussed with respect to
Klöden, B.   +3 more
openaire   +4 more sources

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