scholarly journals Internal Friction on AISI 304 Stainless Steels with Low Tensile Deformations at Temperatures between−50 and 20C

2010 ◽  
Vol 2010 ◽  
pp. 1-8 ◽  
Author(s):  
T. F. A. Santos ◽  
M. S. Andrade
Keyword(s):  
Internal Friction ◽  
Stainless Steels ◽  
True Strain ◽  
Austenitic Stainless Steels ◽  
Torsion Pendulum ◽  
Internal Friction Peak ◽  
Aisi 304 ◽  
Degree Of Deformation ◽  
Hexagonal Close Packed ◽  
Damping Behavior

Austenitic stainless steels specimens were deformed by tension in temperatures in the range of−50Cto 20Cand 0.03 to 0.12 true strain, in order to obtain different volumetric fractions ofε(hexagonal close packed) andα′(body centered cubic) strain induced martensites. The morphology, distribution and volumetric fractions of the martensites were characterized by metallography and dilatometry analysis and quantified by ferrite detector measurements. The damping behavior of specimens with different volumetric fractions of martensites was studied in an inverted torsion pendulum in the 40Cto 400Crange. Theε- andα′-martensites reversion was observed in the temperature range of 50C–200Cand 500C–800C, respectively, by dilatometry. Internal friction curves in function of temperature of the deformed samples presented internal friction peaks. The first internal friction peak is related to sum of the amount ofε- andα′-martensites. For low deformations it aligns around 130Cand it is related only to theε→γreverse transformation. The peak situated around 350Cincreases with the specimen degree of deformation and is, probably, related to the presence ofα′/γinterfaces, and deformed austenite.

Internal friction in hydrogen-charged CrNi and CrNiMn austenitic stainless steels

1996 ◽  
Vol 27 (7) ◽  
pp. 1815-1821 ◽  
Author(s):  
V. G. Gavriljuk ◽  
H. Hänninen ◽  
S. YU. Smouk ◽  
A. V. Tarasenko ◽  
K. Ullakko
Keyword(s):  
Internal Friction ◽  
Stainless Steels ◽  
Austenitic Stainless Steels

scholarly journals Hot workability of AISI 321 and AISI 304 austenitic stainless steels

2014 ◽  
Vol 595 ◽  
pp. 103-112 ◽  
Author(s):  
Richard K.C. Nkhoma ◽  
Charles W. Siyasiya ◽  
Waldo E. Stumpf
Keyword(s):  
Stainless Steels ◽  
Austenitic Stainless Steels ◽  
Hot Workability ◽  
Aisi 304 ◽  
Aisi 321

scholarly journals EVALUATION OF THE METALLURGICAL PARAMETERS EFFECT ON TENSILE PROPERTIES IN AUSTENITIC STAINLESS STEELS

2017 ◽  
Vol 23 (2) ◽  
pp. 111 ◽  
Author(s):  
Andrea Di Schino ◽  
Maria Richetta
Keyword(s):  
Mechanical Properties ◽  
Tensile Properties ◽  
Stainless Steels ◽  
Austenitic Stainless Steels ◽  
304 Stainless Steel ◽  
Strengthening Effect ◽  
Regression Equations ◽  
Aisi 304 ◽  
Solid Solution Strengthening ◽  
Cold Rolling And Annealing

<p>Even if relations predicting the mechanical properties on bars of austenitic stainless steels are already available, but no systematic works was carried out in order to predict mechanical properties in after cold rolling and annealing.   The tensile properties of a large number of cold rolled and annealed AISI 304 stainless steel are here correlated with their chemical composition and microstructure. Quantitative effects of various strengthening mechanisms such as grain size, d– ferrite content and solid solution strengthening by both interstitial and substitutional solutes are described. Interstitial solutes have by far the greatest strengthening effect and, among the substitutional solutes, the ferrite – stabilising elements have a greater effect than the austenite – stabilising elements. Regression equations are developed which predict with good accuracy the proof stress and tensile strength in AISI 304 stainless steels.</p>

scholarly journals Aluminum coating by fluidized bed chemical vapor deposition on austenitic stainless steels AISI 304 and AISI 316

DYNA ◽  
2015 ◽  
Vol 82 (189) ◽  
pp. 22-29
Author(s):  
Jose Luddey Marulanda-Arevalo ◽  
Saul Castañeda-Quintana ◽  
Francisco Javier Perez-Trujillo
Keyword(s):  
Chemical Vapor Deposition ◽  
Fluidized Bed ◽  
Stainless Steels ◽  
Vapor Deposition ◽  
Chemical Vapor ◽  
Austenitic Stainless Steels ◽  
Aluminum Coating ◽  
Aisi 304 ◽  
Aisi 316

Internal Friction Influenced by Hydrogen in Super Duplex Stainless Steels

2005 ◽  
Vol 502 ◽  
pp. 345-350
Author(s):  
Toshio Kuroda ◽  
Katsuyuki Nakade ◽  
Kenji Ikeuchi
Keyword(s):  
Internal Friction ◽  
Stainless Steels ◽  
Sigma Phase ◽  
Peak Height ◽  
Phase Precipitation ◽  
Internal Friction Peak ◽  
Hydrogen Charging ◽  
Super Duplex Stainless Steels ◽  
Two Peaks ◽  
Friction Analysis

The influence of microstructure concerning sigma phase on hydrogen behavior was investigated by means of internal friction analysis. After hydrogen charging, a sharp significant internal friction peak by hydrogen in austenite of as-received specimen was observed at 245K for a frequency of 1.5Hz. However, the peak height in the specimen precipitated significant sigma phase was substantially lower than in as-received specimen since hydrogen in austenite have a concentration lower by sigma phase precipitation. In addition, the broadening and scattering of the internal friction peak was clearly identified by interaction between hydrogen and sigma phase. It means that the two peaks associated with hydrogen in the both sigma phase and austenite were considered to be overlapped. Consequently, it was clearly confirmed that hydrogen entered in the sigma phase lattice and hydrogen was also trapped at sigma/austenite interfaces.

Effect of nitrogen on internal friction of hydrogen charged stable austenitic stainless steels

1993 ◽  
Vol 29 (2) ◽  
pp. 177-182 ◽  
Author(s):  
V.G. Gavriljuk ◽  
H. Hänninen ◽  
A.V. Tarasenko ◽  
K. Ullakko
Keyword(s):  
Internal Friction ◽  
Stainless Steels ◽  
Austenitic Stainless Steels

Corrosion Resistance on the Interlayer of AISI 316L/AISI 304 Stainless Steels Joined with an Iron Based Metallic Glass Ribbon at 1000 °C by Induction Heating

2014 ◽  
Vol 976 ◽  
pp. 108-113 ◽  
Author(s):  
Jorge A. Verduzco ◽  
Jorge A. Gonzalez ◽  
Víctor H. Verduzco ◽  
Carlos E. Borja ◽  
José Guadalupe Quezada ◽  
...  
Keyword(s):  
Corrosion Resistance ◽  
Metallic Glass ◽  
Induction Heating ◽  
Stainless Steels ◽  
Austenitic Stainless Steels ◽  
Glass Ribbon ◽  
Distilled Water ◽  
Aisi 316L ◽  
Aisi 304 ◽  
Metallic Glass Ribbon

This work presents a study of the corrosion resistance as a function of the holding time on the interface generated during the process of brazing an AISI 304 to AISI 316L stainless steels by using a non-commercial Fe60Ni12Cr8P13B7 metallic glass alloy ribbon by induction heating at 1000 °C into a chamber with an Ar controlled atmosphere. Samples of the austenitic stainless steels were joined in a sandwich-like arrangement using the Fe-based metallic glass ribbon. Corrosion experiments carried out in distilled water and 3.5 wt. % sodium chloride solution revealed that the corrosion resistance was higher for samples tested in the distilled water than the latest medium for all dwell joining times, since in the former medium the samples passivated. It was also found that the highest corrosion resistance was achieved for samples joined for a dwelling time of 4 minutes.

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