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Grain boundary strengthening in austenitic nitrogen steels
Materials Science and Engineering: A, 1999The effect of nitrogen and carbon on the strengthening of the austenitic steel Cr18Ni16Mn10 by grain boundaries is studied. It is established in accordance with previous results that contrary to carbon nitrogen increases the coefficient k in the Hall-Petch equation markedly.
Valentin Gavriljuk +5 more
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Grain-Boundary Characteristics in Austenitic Steel
Proceedings, annual meeting, Electron Microscopy Society of America, 1996Grain boundaries are an active area of research interest due to their effect on material property and structure relationships. In order to discuss material properties with regard to grain boundaries it is necessary to know the boundary type. The optimum technique for performing this task is Electron Backscatter Diflfraction (EBSD) in concert with the ...
M.D. Caul, V. Randle
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Austenite grain coarsening in microalloyed steels
Metallurgical Transactions A, 1983A uniform, fine-grain structure is essential in steels, particularly for strip and plate, that are to meet demands for high strength and toughness. To produce such microstructures, every step of the high-temperature processing of the steel must be carefully controlled, beginning with grain coarsening that occurs during reheating for slab rolling ...
L. J. Cuddy, J. C. Raley
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Journal of the Mechanical Behavior of Biomedical Materials, 2020
Conventional coarse-grained (CG) biomedical austenitic stainless steel with grain size in the micrometer range was subjected to a novel phase reversion concept involving severe cold deformation, followed by annealing, when the cold deformed martensite reverts to austenite with grain size in the nanometer/ultrafine (NG/UFG) regime (~200-400 nm).
N, Gong +4 more
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Conventional coarse-grained (CG) biomedical austenitic stainless steel with grain size in the micrometer range was subjected to a novel phase reversion concept involving severe cold deformation, followed by annealing, when the cold deformed martensite reverts to austenite with grain size in the nanometer/ultrafine (NG/UFG) regime (~200-400 nm).
N, Gong +4 more
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Austenite grain growth in structural steel
Metal Science and Heat Treatment, 19721. The first period of austenite grain growth in steel 12Kh2N4A at 900\dgC (holding for 2 h or longer) is characterized by the formation of very large grains (grade 2\2-3) among fine grains (grade 9\2-10). The large grains are formed by the coalescence of fine grains into a single grain. 2. At higher temperatures there is less difference
S. V. Zagulyaeva, M. I. Vinograd
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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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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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Strengthening an austenitic Fe–Mn steel using nanotwinned austenitic grains
Acta Materialia, 2012An austenitic Fe-25Mn steel with a low stacking fault energy was subjected to dynamic plastic deformation (DPD) followed by thermal annealing. The as-DPD sample is structurally characterized by a mixed nanostructure consisting of nanosized grains with an average size of 43 nm and bundles of nanoscale twins (with an average twin/matrix lamella thickness
H.T. Wang, N.R. Tao, K. Lu
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Modeling the Effect of Austenite Grain Size Distribution on Austenite Decomposition Kinetics
Materials Science Forum, 2007The model of the γ→α transformation calculated with the CATRAN program is described. The expected effect of former austenite grain size on the transformation kinetics as well as the final microstructure is analyzed and compared with experimental data.
Andrej Samoilov +4 more
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Grain growth in austenitic stainless steels
Metallography, 1969Abstract Despite the extensive use of Type 347 stainless-steel tubing for regeneratively cooled thrust chambers, very little is known about its grain growth characteristics. Lacking, also, is information on the other 18 Cr8 Ni austenitic steels. Therefore, grain growth curves for AISI Type 304, 316, and 321 were obtained and compared.
J.K. Stanley, A.J. Perrotta
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Modeling of Austenite Grain Growth During Austenitization in a Low Alloy Steel
Journal of Materials Engineering and Performance, 2015The main purpose of this work is to develop a pragmatic model to predict austenite grain growth in a nuclear reactor pressure vessel steel. Austenite grain growth kinetics has been investigated under different heating conditions, involving heating temperature, holding time, as well as heating rate.
Dingqian Dong, Fei Chen, Zhenshan Cui
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