Results 51 to 60 of about 14,168 (256)

Physical metallurgy of modern creep-resistant steel for steam power plants: microstructure and phase transformations [PDF]

open access: yes, 2016
The fact that the microstructure of steel depends on its composition and the heat treatment given to it has been heavily exploited in the design of steel for power plant applications.
Igwemezie, Victor C.   +2 more
core   +3 more sources

MICROSTRUCTURE OF GRANULAR BAINITE

open access: yesLe Journal de Physique Colloques, 1988
A 2.25Cr - 1Mo - 0.1C welded steel having a microstructure described as "granular bainite" has been investigated using optical microscopy, electron microscopy and atom probe field ion microscopy. Granular bainite was found to consist of bainitic ferrite and retained austenite, but no cementite.
B. Josefsson, H.-O. Andrén
openaire   +3 more sources

Utilization of Non‐Metallic Inclusion to Induce Intragranular Acicular Ferrite Formation Contributing to “Oxide Metallurgy”: Effect of Ti/Al Content on the Microstructure Evolution

open access: yessteel research international, EarlyView.
Fine size inclusion can serve as the effective nucleation site to induce the formation of optimal microstructure, i.e. intragranular acicular ferrite (IAF). Here, the low‐alloy steels with different amounts of Ti and Al contents are prepared, and the inclusion characteristics are quantitatively investigated.
Chen Cai, Wangzhong Mu
wiley   +1 more source

Effect of isothermal and pre-transformation temperatures on microstructure and properties of ultrafine bainitic steels

open access: yesJournal of Materials Research and Technology, 2021
The effects of isothermal and pre-transformation temperatures on the microstructure and mechanical properties of ultrafine bainitic steels are investigated and theoretically analyzed by using optical microscopy, scanning electron microscopy, transmission
Chengcong Huang   +4 more
doaj  

Secondary hardened bainite [PDF]

open access: yesMaterials Science and Technology, 2014
The effect of Mo additions on the development of bainitic ferrite in hot rolled low carbon (0·05 wt-C) Nb containing steel strips has been studied. The steel strips were fabricated by a combined process of controlled rolling and accelerated cooling. Microstructural characterisation and mechanical testing for the corresponding strips were investigated.
Hardy Mohrbacher   +5 more
openaire   +2 more sources

Austempering Post‐Intercritical Austenitizing to Enhance Mechanical Properties of an Oil Country Tubular Goods Steel

open access: yessteel research international, EarlyView.
A new austempering approach following intercritical austenitizing is explored to improve the mechanical behavior of API 5CT steel. By tailoring ferrite–bainite microstructures, the process achieves a balance of strength and ductility without the need for post‐quench tempering. The results highlight a cost‐effective alternative to conventional quenching
Paulo Henrique Cirilo   +2 more
wiley   +1 more source

Classification of Bainitic Structures Using Textural Parameters and Machine Learning Techniques

open access: yesMetals, 2020
Bainite is an essential constituent of modern high strength steels. In addition to the still great challenge of characterization, the classification of bainite poses difficulties.
Martin Müller   +4 more
doaj   +1 more source

THE STRUCTURES OF MARTENSITE AND BAINITE

open access: yesLe Journal de Physique Colloques, 1979
The Mössbauer spectra of 57Fe in martensite and its aged structures were throughout resolved into six components, classified by the number and the distance of the nearest carbon atoms. On this basis, we analyzed the local atomic configuration and bonding nature in Fe4C and ε carbide, and also confirmed the validity of the tetrahedral site occupation ...
Hiromitsu Ino, T. Itō
openaire   +2 more sources

Thermomechanical Processing, Microstructure, and Mechanical Properties of Medium‐Mn Steel

open access: yessteel research international, EarlyView.
The microstructure evolution and mechanical properties of a medium‐Mn steel are investigated after thermomechanical processing and isothermal holding at various temperatures. A fine multiphase structure of bainite, fresh or tempered martensite, and retained austenite are obtained.
Burak Barutçuoğlu   +3 more
wiley   +1 more source

Effect of ferrite phase fraction on bainite transformation plasticity in double transformation

open access: yesMechanical Engineering Journal, 2017
Transformation plasticity significantly affects the stress distribution of a forging after heat-treatment. In this study, the transformation plasticity in a multi-phase transformation was measured experimentally.
Yusuke YANAGISAWA   +3 more
doaj   +1 more source

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