Results 21 to 30 of about 1,582,514 (178)

Novel Si-added CrCoNi medium entropy alloys achieving the breakthrough of strength-ductility trade-off

open access: yesMaterials & Design, 2021
A novel CrCoNiSix (x = 0.1, 0.2, 0.3) medium entropy alloys (MEAs) system was designed to achieve enhanced strength and ductility. The CrCoNiSix MEAs are all single-phase face-centered cubic (FCC) structure.
H. Chang   +7 more
doaj   +1 more source

Nanolamellar phase transition in an additively manufactured eutectic high-entropy alloy under high pressures

open access: yesAIP Advances, 2023
Much is unknown about how phase transitions link to micro-/nano-structures in high-entropy systems, especially under extreme pressure and temperature conditions.
Andrew D. Pope   +7 more
doaj   +1 more source

The Effect of Dislocation Substructure and Decomposition on the Course of Diffusionless Transformations [PDF]

open access: yesLe Journal de Physique IV, 1995
The mechanical properties (yield strength, hardness, transformation stresses) and the transformation temperatures of SMA can be affected by the combination of different solid-state reactions. In this context the combination of local change in chemical composition by precipitation processes and the rearrangement of defects by recovery and ...
Treppmann, D., Hornbogen, E.
openaire   +2 more sources

3D Liquid Crystal Framework Enclosing Dual Compartments

open access: yesAngewandte Chemie, EarlyView.
A new type of liquid crystal phase is reported, having the conjugated rod‐like molecular cores form a 3D framework of elongated octahedral cages filled alternatively with alkyl and fluoroalkyl pendant chains. The cages are held together by flexible H‐bonding hinges, making them adaptable to thermal expansion and stable in a wide temperature range.
Yang‐yang Zhao   +7 more
wiley   +2 more sources

Diffusive and Displacive Phase Transformations in Nanocomposites under High Pressure Torsion [PDF]

open access: yesArchives of Metallurgy and Materials, 2019
The high-pressure torsion (HPT) of Ti-Fe alloys with different iron content has been studied at 7 GPa, 5 anvil rotations and rotation speed of 1 rpm. The alloys have been annealed before HPT in such a way that they contained different amounts of α/α' and
B. Straumal   +6 more
doaj   +1 more source

Effect of iron content on β → α phase transformation behavior of Ti-5Al-xFe (x = 1, 2.5, 4) alloys during continuous cooling

open access: yesJournal of Materials Research and Technology, 2019
We investigated the effect of Fe content on the β → α phase transformation behavior of Ti-5Al-xFe (x = 1, 2.5, 4) alloys during continuous cooling. The presence of Fe delayed long-range diffusional phase transformation, thus facilitating diffusionless ...
Gyeong Ryeong Bak   +4 more
doaj   +1 more source

Real-time monitoring of laser powder bed fusion process using high-speed X-ray imaging and diffraction

open access: yesScientific Reports, 2017
We employ the high-speed synchrotron hard X-ray imaging and diffraction techniques to monitor the laser powder bed fusion (LPBF) process of Ti-6Al-4V in situ and in real time.
Cang Zhao   +7 more
doaj   +1 more source

Multi-level model describing phase transformations of polycrystalline materials under thermo-mechanical impacts

open access: yesFracture and Structural Integrity, 2019
The problem of constructing the multilevel physical model of inelastic deformation in steels allowing to take into consideration diffusionless solid-state phase (martensitic) transitions is considered.
Nikita Sergeevich Kondratev   +2 more
doaj   +3 more sources

The Jamaica Education Transformation Commission, 2021: Summary of Recommendations

open access: yes, 2021
Jamaica’s education system boasts many successes: among these are relatively high enrolment rates at some levels, and world class universities that yield talented individuals of the highest calibre.
The Jamaica Education Transformation Commission
core   +1 more source

Centennial of the Diffusionless Paradigm of Bainite

open access: yes, 2012
The diffusionless growth model of bainite formation was included in an international consensus in 1912 that all transformation products of austenite form by an initial transformation to martensite.
Hillert, Mats,   +3 more
core   +1 more source

Home - About - Disclaimer - Privacy