Results 271 to 280 of about 226,190 (309)

Hot working and multipass deformation of a 41Cr4 steel

Journal of Alloys and Compounds, 2004
Abstract The hot working response of a 41Cr4 steel has been investigated by means of torsion tests at temperatures of 850, 950 and 1050 °C, in order to simulate the rolling schedule for this material. The equivalent strain rates used in this part of the study ranged between 5 and 0.05 s−1.
EVANGELISTA E, MASIMI M, EL MEHTEDI, Mohamad, SPIGARELLI, Stefano   +3 more
openaire   +2 more sources

Hot Deformation Behavior during the Hot Compression of AZ31 Alloy

Advanced Materials Research, 2010
The hot deformation behavior of as-cast AZ31 magnesium alloys have been investigated at 200~400°C and strain rates 0.001~1s-1 by means of hot compression tests on a Gleeble-1500D thermal-mechanical simulator. We have analyzed the flow stress-strain curve and presented the constitutive equation by calculating stress exponent, activation energy and Zemer-
Shu Li Sun, Min Gang Zhang, Wen Wu He, Jun Qi Zhou, Gang Sun   +4 more
openaire   +1 more source

Deformation theory of hot-pressing

2011
The possible deformation behaviour of spheres in a compact has been theoretically analyzed and experimentally verified. The change in contact area radius 'a' relative to the particle radius R has been related to the bulk density and bulk strain for four possible modes of packing: simple cubic (Z = 6), orthorhombic (Z = 8), rhombohedral (Z = 12), and ...
openaire   +1 more source

Hot deformation behavior of hot extruded Al–6Mg alloy

Materials Science and Engineering: A, 2012
Abstract The behavior of hot extruded Al–6Mg during hot deformation has been studied using hot compression test. The tests were performed at temperatures of 350, 450, and 550 °C and strain rates of 0.001, 0.1, and 1 s−1. Due to the effects of friction and adiabatic heating generated during compression, the attained true stress–true strain curves have
M.A. Mostafaei, M. Kazeminezhad
openaire   +1 more source

Hot Deformation Behavior and Hot Processing Map of P92 Steel

Advanced Materials Research, 2010
Hot-compression and hot-tension experiments were conducted on a Gleeble-1500D thermal-mechanical simulator. The constitutive equation was presented by calculating the stress exponent, activation energy and Zemer-Hollomon parameter during the hot compression.
Shu Li Sun, Min Gang Zhang, Wen Wu He
openaire   +1 more source

Deformation Behavior and Dynamic Recrystallization of Hot Deformed GH625 Superalloy

Advanced Materials Research, 2010
Microstructure evolution during dynamic recrystallization (DRX) of hot deformed GH625 superalloy was investigated by optical microscope (OP) and transmission electron microscope (TEM). Hot compression tests were conducted using Gleeble-1500 simulator.
Qing Miao Guo, De Fu Li, Sheng Li Guo
openaire   +1 more source

Hot Compaction of Titanium Powders with Shear Deformation

Inorganic Materials: Applied Research
A novel method of the metal powders hot consolidation accompanying with shear deformation was introduced. The powders were capsulated into tight containers and pressed after short-term heating in the furnace to 900 °С. The method route prevents powder oxidation, peripheral spalling and ensures removing of the oxide films from the powder surfaces ...
G. A. Pribytkov, I. A. Firsina, A. V. Baranovskiy, V. P. Krivopalov, D. V. Ershov, Z. Yu. Gorlyshkina   +5 more
openaire   +1 more source

On the mechanism of hot deformation

Acta Metallurgica, 1966
C.M. Sellars, W.J. McTegart
openaire   +1 more source

Hot deformation of a metallic glass

Scripta Metallurgica, 1980
C. Homer, A. Eberhardt
openaire   +1 more source

Variation of activation energy determined by a modified Arrhenius approach: Roles of dynamic recrystallization on the hot deformation of Ni-based superalloy

Journal of Materials Science and Technology, 2021
Chenxi Liu, QianYing Guo
exaly