Results 221 to 230 of about 3,109,044 (287)

Austenite stabilization through manganese enrichment

Scripta Materialia, 2011
A model is proposed to predict austenite stabilization through manganese partitioning between ferrite and austenite. The model predicts retained austenite fractions as a function of intercritical annealing temperature based on equilibrium phase fractions and solute contents.
Emmanuel De Moor, David K. Matlock, John G. Speer, Matthew J. Merwin   +3 more
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Stabilization of Austenite by Hydrogen

Nature, 1960
ATTEMPTS to study the possible effects of hydrogen on the austentite–martensite transformation in steels have always to reckon with the difficulty of retaining adequate amounts of hydrogen in them, regardless of the amounts initially present. The austenitizing and heat treatment of steels are generally carried out at virtually atmospheric pressures or ...
E. G. RAMACHANDRAN, C. DASARATHY
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Mechanical Stability of Austenite

2023
A key design consideration in advanced highs strength steels is to take advantage of the transformation-induced plasticity (TRIP) effect arising from the deformation-induced martensitic transformation of metastable austenite, which is strongly related to the austenite mechanical stability. This thesis investigates how the austenite mechanical stability,
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The thermal stabilization of austenite

Acta Metallurgica, 1966
Abstract It is proposed that the thermal stabilization of austenite occurs because of the pinning of martensite nucleus-austenite matrix interfaces by segregated carbon. The kinetics of thermal stabilization implicit in this model are quantitatively developed and compared with reported austenite stabilization behavior.
K.R Kinsman, J.C Shyne
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Thermal and Mechanical Stability of Austenite in Metastable Austenitic Stainless Steel

Metallurgical and Materials Transactions A, 2019
The roles of grain size, texture, strain, and strain rate on the thermal and mechanical stability of austenite in AISI 321 metastable austenitic stainless steel were studied. Ultrafine grain (UFG), fine grain (FG), and coarse grain (CG) specimens with average grain sizes of 0.24, 3, and 37 µm sizes, respectively, were investigated.
A. A. Tiamiyu, Shiteng Zhao, Zezhou Li, A. G. Odeshi, J. A. Szpunar   +4 more
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Modulation of δ-ferrite formation and austenite stability in Al-added medium-Mn steels and its role in the structure–property relationships

Ironmaking & Steelmaking: Processes, Products and Applications
The present work investigates the influence of Al content on δ-ferrite formation and its volume fraction, resulting in different austenite stability, microstructure evolution, corresponding mechanical behaviour and underlying deformation mechanisms for ...
Deepak Kumar, Mukesh Kumar Yadav, Navanit Kumar, Indrani Sen, T. K. Bandyopadhyay   +4 more
semanticscholar   +1 more source

Sensitization of manganese-stabilized austenitic steels

Proceedings, annual meeting, Electron Microscopy Society of America, 1990
In an earlier study of the phase stability of manganese-stabilized austenitic steels based on Fe-12 Cr-20 Mn-0.25 C (wt %), significant precipitation of tau carbides (M23C6) was found to occur both in the matrix and at grain boundaries during aging near 600°C.
E. A. Kenik, G. E. C. Bell, P. F. Tortorelli   +2 more
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Instabilities in stabilized austenitic stainless steels

Metallurgical Transactions A, 1992
The effect of aging on the precipitation of grain boundary phases in three austenitic stainless steels (AISI 347, 347AP, and an experimental steel stabilized with hafnium) was investigated. Aging was performed both on bulk steels as well as on samples which were subjected to a thermal treatment to simulate the coarse grain region of the heat affected ...
Raghavan Ayer, C. F. Klein, C. N. Marzinsky   +2 more
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Thermal stabilization of austenite

Metal Science and Heat Treatment, 1972
1. To determine the thermal stabilization characteristic of austenite the complex magnetometric method that requires special apparatus can be replaced with measurements of the hardness. 2. There is a good correlation between the results obtained by measuring the hardness and the data obtained by magnetic analysis.
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Phase stability of a manganese-stabilized austenitic stainless steel

Proceedings, annual meeting, Electron Microscopy Society of America, 1989
Development of manganese-stabilized stainless steels has been prompted by two objectives: (1) replacement of nickel, normally used to stabilize austenitic stainless steels, since it is an expensive, strategic material, and (2) reduction of long-term induced radioactivity of neutron-irradiated stainless steels by replacing nickel, molybdenum, and ...
E.A. Kenik, P.J. Maziasz, R.L. Klueh
openaire   +1 more source