Results 211 to 220 of about 18,716 (253)

Different austenite grain size in nonuniformly deformed billets

Metal Science and Heat Treatment, 1991
Grain growth in steels during carburizing or carbonitriding is often accompanied by the occurrence of a varied grain size. Authors explain this phenomenon by the presence of impurities and excess phases along grain boundaries which restrain their growth.
S. S. D'yachenko, E. A. Kuz'menko
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Grain size altering yielding mechanisms in ultrafine grained high-Mn austenitic steel: Advanced TEM investigations

Journal of Materials Science & Technology, 2020
The underlying mechanism of discontinuous yielding behavior in an ultrafine-grained (UFG) 31Mn-3Al-3Si (wt.%) austenitic TWIP steel was investigated by the use of advanced TEM technique with taking the plastic deformation mechanisms and their correlation with grains size near the macroscopic yield point into account.
Chang-Yu Hung, Yu Bai, Nobuhiro Tsuji, Mitsuhiro Murayama   +3 more
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Austenite Grain Size in HSLA

JOM, 1987
This paper attempts to find a suitable technique for determining prior austenite grain size in mild steel such that it could be used over as wide a range of compositions and temperatures as possible. An effort is also made to trace the reasons behind the failure of any particular technique when applied beyond a specific temperature and composition ...
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Austenite and ferrite grain sizes in interstitial free steel

Materials Science and Technology, 1995
AbstractAn oxidation method has been employed to reveal prior austenite grain boundaries in C–Mn and interstitial free (IF) steels. The ability of this technique to reveal prior austenite grain boundaries is assessed by comparing its results with those of an etching method applied on the C–Mn steel.
G. H. Akbari, C. M. Sellars, J. A. Whiteman   +2 more
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The Effect of Austenitizing Temperature on Prior Austenite Grain Size in Martensitic Cast Steel

Solid State Phenomena, 2013
The GX12CrMoVNbN9-1 (GP91) cast steel belongs to a new group of high-temperature creep resistant cast steels being introduced to the power industry. The cast steel is characterized by higher mechanical properties in comparison with the low alloy Cr – Mo or Cr – Mo – V cast steels used so far.
Grzegorz Golański, Cezary Kolan, Jerzy Kupczyk   +2 more
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The determination of austenite grain size in ferrous metals

Metallography, 1981
Abstract A simple uncomplicated method is introduced to render the austenite grain boundaries visible at room temperature. The suggested method is inexpensive and time saving and may be used universally. This is demonstrated on eleven ferrous materials and a good reproducibility is shown.
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Factors affecting prior austenite grain size in low alloy steel

Journal of Materials Science, 2006
The effect of varying normalising and hardening temperatures on the prior austenite grain size in a low alloy Cr–Mo–Ni–V steel has been examined. An initial relative insensitivity of grain size to increasing austenitising temperature was observed followed by a sudden growth of grains at approximately 1000 °C. A detailed study of the precipitates in the
S. Maropoulos, S. Karagiannis, N. Ridley
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Austenite grain growth kinetics and the grain size distribution

2009
The aims of this work are to assess the kinetics of austenite grain growth, and to estimate the three dimensional grain size distribution. Measurements are to be used for the validation of a statistical model for the estimation of the kinetics of austenite grain growth during hot strip rolling.
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Thermomechanical response of Titanium Nickelide on austenite grain/subgrain size

Materials Today: Proceedings, 2017
Abstract Functional properties (FP) of Ti–50.7 at%Ni alloy with various types of structure in a wide range of grain/subgrain size have been examined. The shape memory effect (SME) training procedure was carried out in bending under load via R→B19 transformation; the total strain e t of external layer varied from 12 to 20%.
Kristina Polyakova, Elena Ryklina, Sergey Prokoshkin   +2 more
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Isothermal martensite: Austenite grain size and kinetics of ‘spread’

Materials Science and Technology, 2008
Martensite reaction is a heterogeneous transformation. Frequently, it starts in a few austenite grains and proceeds by nucleation of additional martensite units in the partially transformed grains as well as in untransformed ones, thus spreading the transformation throughout.
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