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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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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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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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Grain growth in austenitic stainless steels
Metallography, 1978Recent studies on the sintering of 304L stainless steel powder compacts showed an intimate coupling of the grain growth and densification processes. The effect was particularly dominant in the intermediate stage of sintering in which the pore structure became rounded, temperatures in excess of 1330K, and times in excess of one hour.
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Advanced Engineering Materials, 2015
A novel type of nanotwinned austenitic stainless steel consisting of the nanotwinned grains embedded in coarsened nano‐sized grains and recrystallized matrix was synthesized. Potentiodynamic polarization measurements indicate that the nanotwinned samples exhibit a higher passive ability in the acidic solution and a comparable pitting resistance in ...
Fengkai Yan +3 more
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A novel type of nanotwinned austenitic stainless steel consisting of the nanotwinned grains embedded in coarsened nano‐sized grains and recrystallized matrix was synthesized. Potentiodynamic polarization measurements indicate that the nanotwinned samples exhibit a higher passive ability in the acidic solution and a comparable pitting resistance in ...
Fengkai Yan +3 more
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Work hardening behavior of nanotwinned austenitic grains in a metastable austenitic stainless steel
Scripta Materialia, 2016Abstract The work hardening behavior of nanotwinned austenitic grains in a novel type of nanotwinned austenitic stainless steels was investigated. Multiple Shockley partial dislocation activities in the nanotwinned grains could trigger occurrence of stacking faults and strain induced martensitic transformation before necking, resulting in an increase
H.Y. Yi, F.K. Yan, N.R. Tao, K. Lu
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Austenite grain growth kinetics and the grain size distribution
2009The 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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The Effect of Austenitizing Temperature on Prior Austenite Grain Size in Martensitic Cast Steel
Solid State Phenomena, 2013The 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 +2 more
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Metallurgical Transactions A, 1991
A 0.06 pct C-0.3 pct Mn and a 0.07 pct C-0.6 pct Mn-0.028 pct Nb steel were deformed in torsion at a constant strain rate of 2/s. Two schedules were used. In schedule A, seven roughing passes executed between 1260°C and 1130°C were followed by a single large finishing pass with a strain of 3.5 at constant temperatures between 1010°C and 840°C. The time
J. W. Bowden, F. H. Samuel, J. J. Jonas
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A 0.06 pct C-0.3 pct Mn and a 0.07 pct C-0.6 pct Mn-0.028 pct Nb steel were deformed in torsion at a constant strain rate of 2/s. Two schedules were used. In schedule A, seven roughing passes executed between 1260°C and 1130°C were followed by a single large finishing pass with a strain of 3.5 at constant temperatures between 1010°C and 840°C. The time
J. W. Bowden, F. H. Samuel, J. J. Jonas
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