Study of failure for unstable austenitic steel in a hydrogen atmosphere

1985 ◽  
Vol 27 (8) ◽  
pp. 569-571
Author(s):  
I. N. Levina ◽  
V. N. Klyuchnikov ◽  
O. M. Detinich
Keyword(s):  
Austenitic Steel ◽  
Hydrogen Atmosphere ◽  
Unstable Austenitic Steel

Microstructure and Mechanical Properties of the Stainless Steels Obtained by Sintering Mixtures of AISI 316L and Silicon Powders

2006 ◽  
Vol 513 ◽  
pp. 35-50
Author(s):  
K. Sikorski ◽  
Agnieszka Szymańska ◽  
M. Sekuła ◽  
D. Kowalczyk ◽  
Jan Kazior ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Stainless Steel ◽  
Austenitic Stainless Steel ◽  
Austenitic Steel ◽  
Stainless Steels ◽  
Hydrogen Atmosphere ◽  
Aisi 316L ◽  
Microstructure And Mechanical Properties ◽  
Steel Aisi

The aim of the study was to obtain a ferritic-austenitic stainless steel through sintering of the mixture of austenitic steel AISI 316L powders with silicon in the amount ranging from 1 to 7%. The pressed mixtures were sintered at 1240oC for 60 minutes under hydrogen atmosphere. The results of the silicon admixture on the density, porosity, microstructure and mechanical properties of the sintered specimens are discussed.

Fracture toughness of unstable austenitic steel 10Kh14AG12M

1979 ◽  
Vol 21 (9) ◽  
pp. 678-681
Author(s):  
B. A. Potekhin ◽  
V. P. Korobeinikov
Keyword(s):  
Fracture Toughness ◽  
Austenitic Steel ◽  
Unstable Austenitic Steel

Determination of Residual Stresses after Tensile Tests and Deep Drawing of Unstable Austenitic Steel

2005 ◽  
pp. 690-695
Author(s):  
M. Reda Berrahmoune ◽  
Sophie Berveiller ◽  
Karim Inal ◽  
Etienne Patoor ◽  
C. Simon ◽  
...  
Keyword(s):  
Residual Stresses ◽  
Austenitic Steel ◽  
Deep Drawing ◽  
Tensile Tests ◽  
Unstable Austenitic Steel

Residual Stress State at Different Scales in Deep Drawn Cup of Unstable Austenitic Steel

2006 ◽  
Vol 524-525 ◽  
pp. 95-100 ◽  
Author(s):  
M. Reda Berrahmoune ◽  
Sophie Berveiller ◽  
Karim Inal ◽  
Etienne Patoor
Keyword(s):  
Stress State ◽  
Residual Stresses ◽  
Austenitic Steel ◽  
Deep Drawing ◽  
Complex Loading ◽  
Tensile Tests ◽  
Loading Path ◽  
Internal Stresses ◽  
Drawing Ratio ◽  
Unstable Austenitic Steel

In this study, residual stresses state at different scales in the 301LN unstable austenitic steel after deep drawing was determined. The first part of the work deals with the characterization of the martensitic transformation during uniaxial loading. The austenite/martensite content which was determined by X-Ray Diffraction increases until a maximum of 0.6 for 30% strain. Internal stress distribution was determined by coupling in-situ tensile tests with sin²ψ method. As soon as martensite appears, the magnitudes of the internal stresses in this phase were found to be 400 MPa higher than in the austenite. To establish a relation between the complex loading path effect and the phase stress state, deep drawing tests were carried out for different drawing ratios. Both macroscopic tangential residual stresses and residual stresses in the martensite were determined. It appears that the macroscopic tangential residual stresses are positive and increase with increasing drawing ratios and the maximum value is located at middle height of the cup. It is about 850MPa for the Drawing Ratio (DR)=2.00. The tangential residual stresses in the martensite were found to be positive in the external face and have a same evolution as the macroscopic ones.

Stress Distribution in unstable Austenitic Steel

2002 ◽  
Vol 404-407 ◽  
pp. 495-500 ◽  
Author(s):  
Regis Kubler ◽  
Karim Inal ◽  
Marcel Berveiller
Keyword(s):  
Stress Distribution ◽  
Austenitic Steel ◽  
Unstable Austenitic Steel

Spherulite Structures in a Melt Spun Fe-Ni Austenitic Steel

1985 ◽  
Vol 43 ◽  
pp. 52-53
Author(s):  
G. M. Michal ◽  
T. K. Glasgow ◽  
T. J. Moore
Keyword(s):  
Austenitic Steel ◽  
Room Temperature ◽  
Elevated Temperatures ◽  
Large Range ◽  
Amorphous Structure ◽  
Nucleation And Growth ◽  
Ni Alloys ◽  
Melt Spun ◽  
Crystal Fibers ◽  
Rapidly Solidified

Large additions of B to Fe-Ni alloys can lead to the formation of an amorphous structure, if the alloy is rapidly cooled from the liquid state to room temperature. Isothermal aging of such structures at elevated temperatures causes crystallization to occur. Commonly such crystallization pro ceeds by the nucleation and growth of spherulites which are spherical crystalline bodies of radiating crystal fibers. Spherulite features were found in the present study in a rapidly solidified alloy that was fully crysstalline as-cast. This alloy was part of a program to develop an austenitic steel for elevated temperature applications by strengthening it with TiB2. The alloy contained a relatively large percentage of B, not to induce an amorphous structure, but only as a consequence of trying to obtain a large volume fracture of TiB2 in the completely processed alloy. The observation of spherulitic features in this alloy is described herein. Utilization of the large range of useful magnifications obtainable in a modern TEM, when a suitably thinned foil is available, was a key element in this analysis.

Crystal structure and lattice dynamics of hydrogen-loaded austenitic steel

2003 ◽  
Vol 112 ◽  
pp. 407-410
Author(s):  
S. A. Danilkin ◽  
M. Hölzel ◽  
H. Fuess ◽  
H. Wipf ◽  
T. J. Udovic ◽  
...  
Keyword(s):  
Crystal Structure ◽  
Austenitic Steel ◽  
Lattice Dynamics
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