Results 71 to 80 of about 4,032 (209)

Effect of Heating Rate on Grain Structure and Superplasticity of 7B04 Aluminum Alloy Sheets

open access: yesCailiao gongcheng, 2017
Fine-grained 7B04 aluminum alloy sheets were manufactured through thermo-mechanical treatment. The effects of anneal heating rate on grain structure and superplasticity were investigated using electron back scattering diffraction(EBSD) and high ...
CHEN Min   +5 more
doaj   +1 more source

Characterization of Diffusion‐Creep Olivine Fabric and Its Identification in Natural Peridotite: Repeated Pure Shear and Equal‐Channeling Angular Pressing Tests

open access: yesJournal of Geophysical Research: Solid Earth, Volume 130, Issue 11, November 2025.
Abstract We performed repeated pure shear and equal‐channel angular pressing tests on Fe‐free olivine +10 or 20 vol% diopside aggregates to investigate the characteristics of crystallographic preferential orientation (CPO) development in olivine during diffusion creep.
N. Kim, S. Jiang, T. Hiraga
wiley   +1 more source

Superplasticity and anelasticity in fine-grained Sn-Pb alloys [PDF]

open access: yes, 1979
Mechanisms which may play a role in superplastic deformation (grain strain mechanisms, grain boundary sliding (GBS) mechanisms) are reviewed. Two well-known lattice dislocation mechanisms are re-evaluated for grain boundary dislocations (GBDs).
Schneibel, Joachim H.
core   +1 more source

Achieving Complex Nanostructures: The Role of Hydrogen in Controlling Mechanical Alloying and Microstructure Evolution in the TiVZrNbHf‐Cu System

open access: yesAdvanced Science, Volume 12, Issue 33, September 4, 2025.
This study highlights the drastic influence hydrogen has on the microstructure evolution during severe plastic deformation. High‐pressure torsion of a TiVZrNbHf‐Cu composite results in mechanical alloying and subsequent amorphization, whereas replacing the high entropy alloy with the corresponding hydride stabilizes a two‐phase microstructure.
Lukas Schweiger   +11 more
wiley   +1 more source

Effect of Si content on low-temperature superplasticity in Fe–10Mn steel

open access: yesJournal of Materials Research and Technology
We systematically investigated the effect of Si on the low-temperature superplasticity of 50% and 80% cold-rolled Fe–10Mn-(0.2–5.5)Si steels through tensile testing at 763 K with strain rates of 1 × 10−3 s−1 and 1 × 10−4 s−1. Superplasticity was achieved
Hyun-Bin Jeong   +4 more
doaj   +1 more source

Tribological properties of surface modified Cu nanoflakes prepared by plasma assisted ball milling

open access: yesCailiao gongcheng, 2019
Surface modified nano-flake Cu powder was prepared by plasma assisted ball milling by adding stearic acid as a process agent and its tribological properties were tested.
JI Guang-pu   +5 more
doaj   +1 more source

Strain Localization Along Aphrodite Terra's Chasmata System, Venus: The Role of Frictional Melting and Fault‐Melt Interaction

open access: yesJournal of Geophysical Research: Planets, Volume 130, Issue 9, September 2025.
Abstract We analyze large‐scale shear zones that are exposed along the equatorial chasmata of Eastern Aphrodite Terra to understand the role of strain localization in the deformation of the Venusian crust. These shear zones dip at low angles opposite to the slopes, forming terraces that expose portions of the shear planes.
Thomas Kenkmann   +2 more
wiley   +1 more source

Strength of joints produced by ultrasonic spot welding of copper plates using tools with different tooth heights

open access: yesFrontier Materials & Technologies
Ultrasonic welding of metals is an energy-efficient, environmentally friendly technology that allows producing solid-state joints between thin blanks. The widespread use of this technology is hampered by the low strength of the resulting joints and the ...
Elvina R. Shayakhmetova
doaj   +1 more source

INFLUENCE OF TEMPERATURE AND STRAIN RATE ON SUPERPLASTICITY KINETICS OF COMPOSITE AZ61-F MAGNESIUM MATERIALS

open access: yesActa Metallurgica Slovaca, 2018
Micromechanisms of fracture of AZ61-F composites in the zone of quasi-superplastic deformation were analyzed and quantified in this work. Deformation of AZ61-F magnesium alloys with 1 wt.% of Al2O3 phase was tested at a temperature of 473 K and different
Michal Besterci   +3 more
doaj   +1 more source

Forming of bulk metallic glasses: ideal superplasticity?

open access: yes, 2012
International audienceDue to their brittleness, bulk metallic glasses (BMG) are generally difficult to form at room temperature. A fruitful way to get components is to deform them in their supercooled liquid region (SLR).
Blandin, J.J., Gravier, S.
core   +1 more source

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