Results 81 to 90 of about 2,013,900 (214)
Materials & DesignThis study aims to enhance the strength-toughness properties of DC53 cold work die steel by optimizing the austempering process. Compared to high-temperature tempering, the optimal austempering process increases unnotched impact toughness from 32.8 J/cm2
Yuxiang Liu +5 more
doaj +1 more source
Austenite Grain Size Estimtion from Chord Lengths of Logarithmic-Normal Distribution
Archives of Metallurgy and Materials, 2017 Linear section of grains in polyhedral material microstructure is a system of chords. The mean length of chords is the linear grain size of the microstructure.
Adrian H., Wiencek K.
doaj +1 more source
steel research international, EarlyView.Paint baking of resistance spot welded joints of 2.0 GPa warm‐stamped medium‐Mn steel activates low‐temperature tempering, forming fine cementite in the fusion zone and enhancing toughness. Crack propagation resistance increases, shifting the failure mode from partial interfacial to complete pullout, with peak load and energy absorption rising ...
Sunusi Marwana Manladan +8 more
wiley +1 more source
Materials Research Express, 2020 Microstructure evolution during the hot forming shows a significant impact on material’s mechanical properties. To explore the deformation characteristics of 5CrNiMoV steel, numerical simulation and microscopic phase-field simulation of the multi ...
Zhiqiang Hu, Kaikun Wang, Li Yang
doaj +1 more source
steel research international, EarlyView.High Nb (2.4 wt.%) addition to Maraging 300 steel drives lattice distortion and nanoscale Nb–Mo‐rich precipitation, confirmed by energy‐dispersive X‐ray spectroscopy mapping (Mo ~5.4 wt.%, Nb ~2.5 wt.%). Nanoindentation reveals strong matrix hardening (H >4.8 GPa) at 480°C aging, while 560°C induces ~1.92 vol.% reverted austenite, enabling tunable ...
Laylla Sharon B. Peixoto +9 more
wiley +1 more source
steel research international, EarlyView.Tailored heat treatments transform additively manufactured high‐nitrogen martensitic Cr steel from austenitic as‐built condition to high‐hardness states. Isothermal bainitizing at 250°C generates an ultrafine nanostructure and achieves higher hardness than conventional hardening and tempering, highlighting a promising postprocessing route for laser ...
Philip König +2 more
wiley +1 more source
steel research international, EarlyView.Serrations and stepwise austenite phase transformation were observed in cold‐rolled and annealed medium manganese steels. By in situ XRD experiments, these two phenomena were studied simultaneously. The results show that DSA leads to the creation of PLC bands and load drops in the specimen.
Shahroz Ahmed +6 more
wiley +1 more source
Acta Metallurgica Slovaca, 2016 The microstructural evolution of a quenched and tempered medium-C micro-alloyed steel during tempering is analyzed The steel was heat treated in order to develop fully martensitic microstructures after quenching with different prior austenite grain sizes
Andrea Di Schino
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steel research international, EarlyView.This review's second part details the mechanical, corrosion, and electromagnetic behaviors of FSSs. It integrates the foundational microstructure (texture/defects/precipitates) and processing effects from Part I to establish and analyze complex property–property interrelationships critical for high‐performance applications.
Shahab Bazri +2 more
wiley +1 more source
FAST RECONSTRUCTION OF PRIOR AUSTENITE GRAINS IN BAINITIC AND MARTENSITIC STRUCTURES IN TERM OF EBSD ORIENTATION DATA [PDF]
, 2017 В настоящей работе предложен упрощенный экспресс-метод восстановления бывших зерен аустенита, основанный на использовании стандартных опций EBSD микроскопа и определенного ориентационного соотношения.
Zisman, A. A. +5 more
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