scholarly journals Improving the scratch test properties of plasma-nitrided stainless austenitic steel by preliminary nanostructuring frictional treatment

2018 ◽  
Author(s):  
N. V. Lezhnin ◽  
A. V. Makarov ◽  
N. V. Gavrilov ◽  
A. L. Osintseva ◽  
R. A. Savrai
Keyword(s):  
Austenitic Steel ◽  
Scratch Test ◽  
Frictional Treatment ◽  
Stainless Austenitic Steel

Mechanical Properties of Interface of Heterogeneous Diffusion Welds of Titanium and Austenitic Steel

2013 ◽  
Vol 586 ◽  
pp. 178-181 ◽  
Author(s):  
Ladislav Kolařík ◽  
Marie Kolaříková ◽  
Petr Vondrouš
Keyword(s):  
Mechanical Properties ◽  
Titanium Alloy ◽  
Austenitic Steel ◽  
Explosion Welding ◽  
Fusion Welding ◽  
Diffusion Welding ◽  
Indentation Hardness ◽  
Reduced Modulus ◽  
Titanium Alloy Ti6al4v ◽  
Stainless Austenitic Steel

Titanium is material which is used in many areas of human activity. Therefore it is necessary to join it with other material. It is very difficult to welding Ti with other metals by conventional fusion welding methods. There exist special joining technologies of heterogeneous materials which is possible to use. This is usually a joining of materials in the solid state, as diffusion welding, friction welding or explosion welding. This contribution deals with diffusion welding of titanium alloy Ti6Al4V and stainless austenitic steel 1.4301. There are described mechanical properties (as is reduced modulus Er and indentation hardness HIT) and changes of chemical composition of join due to diffusion of elements.

Impact of radial-shear rolling on the microstructure and mechanical properties of 08Х18Н10Т stainless austenitic steel

2020 ◽  
Vol 76 (2) ◽  
pp. 162-168
Author(s):  
A. B. Naizabekov ◽  
S. N. Lezhnev ◽  
E. A. Panin ◽  
A. S. Arbuz
Keyword(s):  
Mechanical Properties ◽  
Grain Size ◽  
Austenitic Steel ◽  
Ultrafine Grain ◽  
Simultaneous Increase ◽  
Surface Zone ◽  
Gradient Structure ◽  
Fine Grained ◽  
Radial Shear Rolling ◽  
Stainless Austenitic Steel

Grinding of a structural material microstructure to an ultrafine grain state is a way to increase the strength of it. Intensive plastic deformation is the most perspective method of obtaining ultrafine grain materials. However, with the simultaneous increase in strength properties in ultrafine materials, there is an inevitable decrease in its plastic properties; they are becoming fragile and subject to failure during elongation. The use of metal materials with a gradient structure, having course grain size in the central part of the billet and decreasing to ultrafine grain size at the surface, is an effective way to solve the problem of increasing the plasticity of the metal products in general. Possibilities of forming an ultra-fine grained gradient structure in 08X18N10T stainless austenitic steel by using radial-shear rolling studied. The results of the research showed that the ultra-fine grained structure in the radial-shear rolling rod formed on the mill extends from its surface to a depth of at least a quarter of the radius of the rod. The transition zone is in the region between 0.5R and 0.25R of the bar section. Due to the structural heterogeneity of the cross-section of the bar, there is a smooth drop in the micro-hardness from the surface zone of the bar to its central zone by 10.2 %. All this testifies to the gradient character of the structure formed in the bars of 08X18N10T steel during shaping by radial-shear rolling. Studies of the mechanical properties of the deformed bars of 08X18N10T stainless austenitic steel showed that they monotonously change depending on the number of passes. After 7 passes the strength increased almost 2 times to a value of 1073 MPa, and the elongation, which is one of the indicators of the plasticity of the material, was also reduced by 2 times, reaching 21% from the original value of 40%. The results showed a possibility to obtain the gradient structure with increased level of mechanical properties by radial-shear rolling of long billets of 08Х18Н10Т austenitic stainless steel.

Paramagnetic spin resonance in hydrogen-charged stainless austenitic steel

1999 ◽  
Vol 32 (3) ◽  
pp. 298-304 ◽  
Author(s):  
B D Shanina ◽  
V G Gavriljuk ◽  
S P Kolesnik ◽  
V N Shivanyuk
Keyword(s):  
Austenitic Steel ◽  
Spin Resonance ◽  
Stainless Austenitic Steel

Cyclic stress-strain curves of a stainless austenitic steel in the MS−MD range

1973 ◽  
Vol 7 (6) ◽  
pp. 657-660 ◽  
Author(s):  
A.G. Pineau ◽  
L.F. Van Swam ◽  
R.M. Pelloux
Keyword(s):  
Austenitic Steel ◽  
Cyclic Stress ◽  
Stress Strain ◽  
Stainless Austenitic Steel

THE FORMATION OF A GRADIENT STRUCTURE IN 08X18N10T STAINLESS AUSTENITIC STEEL USING RADIAL-SHEAR ROLLING

Vestnik LSTU ◽  
2020 ◽  
pp. 60-69
Author(s):  
A.B. Naizabekov ◽  
S.N. Lezhnev ◽  
E.A. Panin ◽  
A.S. Arbuz ◽  
D.V. Kuis
Keyword(s):  
Austenitic Steel ◽  
Gradient Structure ◽  
Radial Shear Rolling ◽  
Stainless Austenitic Steel

scholarly journals The effect of radial-shear rolling on microstructure and mechanical properties of stainless austenitic steel AISI-321

2018 ◽  
Vol 190 ◽  
pp. 11003 ◽  
Author(s):  
Abdrakhman Naizabekov ◽  
Sergey Lezhnev ◽  
Alexandr Arbuz ◽  
Evgeniy Panin
Keyword(s):  
Mechanical Properties ◽  
Austenitic Steel ◽  
Strength Properties ◽  
Grain Structure ◽  
Microstructure And Mechanical Properties ◽  
Ultrafine Grained ◽  
Steel Aisi ◽  
Aisi 321 ◽  
Radial Shear Rolling ◽  
Stainless Austenitic Steel

Improving the quality of metal products by crushing of the microstructure of material is one of the promising areas of modern metallurgy. The basic idea consists in refinement the grain structure of the material to sizes less than a micron, i.e. the obtaining of ultrafine-grained (UFG) materials, offering higher strength properties of the material under preservation or a small loss of ductility. Stainless austenitic steel AISI 321 is widely used in all the above areas as well as in chemical, vacuum and nuclear technology. For the obtaining of UFG structure in this material the method of radial-shear rolling is used. For the purpose of identifying the influence of radial-shear rolling on microstructure and mechanical properties of stainless austenitic steel AISI-321, the experiment was conducted where at the radial-shear rolling mill SVP-08 at 800 °C in several passes of the workpieces with a diameter of 30 mm rolled till a diameter of 13 mm with following cooling in water. The analysis of the microstructure of deformed samples showed the presence of equiaxed ultrafine-grained structure in the peripheral areas of the workpiece and the presence of elongated fibrous texture in the axial zone. The strength characteristics of the workpiece has increased more than 2 times, with a slight decrease of plasticity.

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