Thermal Stability of Ultra-Fine Grained Magnesium Alloy Processed by Extrusion and ECAP

2013 ◽  
pp. 175-179
Author(s):  
Jitka Vrátná ◽  
Miloš Janeček
Keyword(s):  
Thermal Stability ◽  
Magnesium Alloy ◽  
Fine Grained ◽  
Thermal Stability Of

A Study on Thermal Stability of CoSi2Employing Novel Fine-Grained Polycrystalline Silicon/CoSi2/Si (001) System

2001 ◽  
Vol 40 (Part 1, No. 11) ◽  
pp. 6307-6310
Author(s):  
Jong-Uk Bae ◽  
Dong Kyun Sohn ◽  
Ji-Soo Park ◽  
Chang Hee Han ◽  
Jin Won Park ◽  
...  
Keyword(s):  
Thermal Stability ◽  
Polycrystalline Silicon ◽  
Fine Grained ◽  
Thermal Stability Of

Study of Thermal Stability of Superhydrophobic Properties of Coatings Formed on Magnesium Alloy

2021 ◽  
Vol 324 ◽  
pp. 3-8
Author(s):  
Konstantine V. Nadaraia ◽  
Dmitry V. Mashtalyar ◽  
Sergey N. Suchkov ◽  
Vera V. Mostovaya ◽  
Igor M. Imshinetskiy ◽  
...  
Keyword(s):  
Thermal Stability ◽  
Contact Angle ◽  
Magnesium Alloy ◽  
Contact Angle Hysteresis ◽  
Surface Layers ◽  
Properties Of Coatings ◽  
Composite Layers ◽  
Electrolytic Oxidation ◽  
Plasma Electrolytic ◽  
Thermal Stability Of

The thermal stability of the superhydrophobic properties of coatings obtained on a magnesium alloy by plasma electrolytic oxidation (PEO) followed by treatment with fluoropolymer was studied. It was established that formed surface layers have contact angle (CA) equal to 171° and contact angle hysteresis equal to 6° at 25 °C, which allows to characterize them as superhydrophobic. After 5 cycles of cooling-heating of composite layers, CA was 135°, indicating the durability of coatings. Additionally, obtained polymer-containing layers demonstrated low wettability at 0 °C (CA was 105°).

Lattice defects in severely deformed biomedical Ti-6Al-7Nb alloy and thermal stability of its ultra-fine grained microstructure

2019 ◽  
Vol 788 ◽  
pp. 881-890 ◽  
Author(s):  
Kristína Bartha ◽  
Pavel Zháňal ◽  
Josef Stráský ◽  
Jakub Čížek ◽  
Milan Dopita ◽  
...  
Keyword(s):  
Thermal Stability ◽  
Lattice Defects ◽  
Fine Grained ◽  
Thermal Stability Of

Thermal Stability of the Structure and Mechanical Properties of Fine-Grained Aluminum Conductor Alloys Al–Mg–Zr–Sc(Yb)

2020 ◽  
Vol 2020 (9) ◽  
pp. 987-998
Author(s):  
V. N. Chuvil’deev ◽  
A. V. Nokhrin ◽  
Ya. S. Shadrina ◽  
A. V. Piskunov ◽  
V. I. Kopylov ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Thermal Stability ◽  
Fine Grained ◽  
Thermal Stability Of

Effect of secondary phase particles on thermal stability of ultra-fine grained Mg-4Y-3RE alloy prepared by equal channel angular pressing

2018 ◽  
Vol 140 ◽  
pp. 207-216 ◽  
Author(s):  
Peter Minárik ◽  
Jozef Veselý ◽  
Jakub Čížek ◽  
Mária Zemková ◽  
Tomáš Vlasák ◽  
...  
Keyword(s):  
Thermal Stability ◽  
Equal Channel Angular Pressing ◽  
Secondary Phase ◽  
Fine Grained ◽  
Angular Pressing ◽  
Thermal Stability Of

Annealing Response of Al-0.22Sc-0.13Zr Alloy Processed by Accumulative Roll Bonding

2008 ◽  
Vol 584-586 ◽  
pp. 899-904 ◽  
Author(s):  
Petr Homola ◽  
Margarita Slámová ◽  
Vladivoj Očenášek ◽  
J. Uhlíř ◽  
Miroslav Cieslar
Keyword(s):  
Thermal Stability ◽  
Plastic Deformation ◽  
Accumulative Roll Bonding ◽  
Superplastic Forming ◽  
Aged Specimen ◽  
Roll Bonding ◽  
Fine Grained ◽  
Peak Aged ◽  
Pre Treatment ◽  
Thermal Stability Of

Ultra-fine grained (UFG) materials can be produced by several techniques involving severe plastic deformation (SPD). Accumulative Roll Bonding (ARB) is one of the SPD methods that enable the production of large amounts of UFG sheets. UFG sheets were prepared by up to six cycles of ARB at ambient temperature from an Al-0.22Sc-0.13Zr alloy in two states: a non-agehardened and a peak-aged. The effect of Al3(Sc1-xZrx) precipitates on the thermal stability of the UFG structures produced by ARB was investigated by isochronal annealing at temperatures between 200 and 550 °C. Additionally, the non-age-hardened ARB material was peak-aged prior to annealing and annealed together with both as-ARB-processed materials. The changes of microstructure and hardness due to annealing were studied. Annealing at 300 °C induces an additional strengthening in both non-pre-aged ARB materials that may be ascribed to precipitation and growth of coherent Al3(Sc1-xZrx) particles. This result suggests that the hardness decrease introduced by ARB in the peak-aged specimen is due to dissolution of precipitates during deformation. The annealing response of the materials above 300 °C does not depend on their thermal pre-treatment. However, the finely dispersed Al3(Sc1-xZrx) precipitates stabilise the refined deformed microstructure suitable for superplastic forming up to relatively high temperatures.

Sign in / Sign up

Export Citation Format

Share Document