Results 131 to 140 of about 1,684,077 (260)

Multi‐Scale Mechanical Behavior of Additive‐Manufactured 316L Stainless Steel Processed by Severe Plastic Deformation

open access: yessteel research international, EarlyView.
The multi‐scale mechanical behavior of additive‐manufactured 316L stainless steel processed by directed energy deposition and high‐pressure torsion is explored. The influence of torsional strain on strength and microstructural evolution is revealed, indicating progressive grain refinement in the ultrafine regime, reaching strength levels nearing 1800 ...
M. Farhan Raza, Guney Guven Yapici
wiley   +1 more source

Transmission electron microscopy observations of the f.c.c.-to-h.c.p. martensite transformation in Co-Ni alloys

open access: yes, 1991
Nucleation and growth mechanisms for the f.c.c. austenite-h.p.c. martensite reaction in fine-grain-size Co-Ni alloys have been investigated by a combination of in situ heating and cooling in a high-voltage transmission electron microscope, and lattice ...
Hayzelden, C.   +3 more
core   +1 more source

Strain‐Induced NbC Precipitation as a Governing Mechanism for Hot Deformation Resistance in CrNiMnMoB Ultrahigh‐Strength Steels

open access: yessteel research international, EarlyView.
Strain‐induced NbC precipitation governs hot‐deformation resistance in CrNiMnMoB ultrahigh‐strength steel by suppressing dynamic recrystallization, increasing activation energy, and refining martensitic substructures. The precipitation response is controlled by temperature, supersaturation, and strain rate, with slow deformation promoting extensive NbC
Atef Hamada   +6 more
wiley   +1 more source

3D Liquid Crystal Framework Enclosing Dual Compartments

open access: yesAngewandte Chemie, Volume 138, Issue 41, 5 October 2026.
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

Behavior of exterior beam‐column joint reinforced with shape memory alloy

open access: yesStructural Concrete, EarlyView.
Abstract Beam‐column joints are critical regions in moment‐resisting frames and are particularly susceptible to severe stress concentrations and reinforcement congestion. Conventional design typically relies on dense transverse reinforcement to improve joint performance, resulting in construction difficulties and reinforcement congestion.
Yemenashu Nigusse Mogess   +3 more
wiley   +1 more source

Thermodynamic Approach to Describe the Martensite Phase Transformation Kinetics via the Stabilization of Austenite

open access: yes
This study investigated the spread of the martensite transformation, i.e., the extent of the transformation as a function of the temperature, via the development of a model focusing on thestabilization of residual austenite along the transformation ...
Gaudez, Steve   +4 more
core   +1 more source

Effect of Pre-Existing Martensite on Bainitic Transformation in Low-Temperature Bainite Steel

open access: yes, 2017
The effect of different volume fractions of pre-existing martensite on the low-temperature bainitic transformation and microstructures was quantitatively analyzed by dilatometer, optical microscope and scanning electron microscope.
Peng Zhou   +4 more
core   +1 more source

TWINNING AND MARTENSITIC TRANSFORMATION

open access: yesLe Journal de Physique Colloques, 1974
Both deformation twinning and martensitic transformation may be regarded as modes of deformation, and models which relate the nucleation and growth of twins and martensite plates to dislocations and stacking faults are reviewed. Recent experimental and theoretical work indicates that b. c. c.
openaire   +2 more sources

DanMAX – a beamline for materials science using powder X‐ray diffraction, total scattering, and full‐field tomographic imaging

open access: yesJournal of Synchrotron Radiation, EarlyView.
The DanMAX beamline at the MAX IV laboratory is designed for in situ and in operando studies using powder X‐ray diffraction, total scattering, and full‐field imaging in the 15–35 keV energy range.DanMAX is a hard X‐ray materials science beamline at the ultra‐low emittance 3 GeV storage ring at the MAX IV laboratory.
Mads Ry Vogel Jørgensen   +17 more
wiley   +1 more source

Continuous Cooling Transformation Curves of C-Mn-Si Series Super-Bainite Steel

open access: yesTeshugang, 2012
Dilatation curves of C-Mn-Si series low carbon (/% : 0.11C , 1.15Si, 1.85Mn, 0.032A1, 0.003Ti, 0.002 4N) and medium carbon (/% : 0.35C, 1.1 ISi, 1.82Mn, 0.041 Al, 0.002Ti, 0.004 2N) bainite steel continuous cooling with cooling rate 0.5 ~ 30 ℃/s have ...
王凤琪   +4 more
doaj  

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