Change in the mechanical properties of austenitic stainless steels and alloys resulting from the martensitic transformation at low temperatures

1971 ◽  
Vol 3 (8) ◽  
pp. 959-962 ◽  
Author(s):  
V. Ya. Il'ichev ◽  
L. V. Skibina ◽  
V. I. Startsev
Keyword(s):  
Mechanical Properties ◽  
Martensitic Transformation ◽  
Stainless Steels ◽  
Low Temperatures ◽  
Austenitic Stainless Steels

scholarly journals Improvement of Strength and Impact Toughness for Cold-Worked Austenitic Stainless Steels Using a Surface-Cracking Technique

Metals ◽  
2018 ◽  
Vol 8 (11) ◽  
pp. 932 ◽  
Author(s):  
Kwangyoon Kim ◽  
Minha Park ◽  
Jaeho Jang ◽  
Hyoung Kim ◽  
Hyoung-Seok Moon ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Impact Toughness ◽  
Stainless Steels ◽  
Low Temperatures ◽  
Austenitic Stainless Steels ◽  
High Strength ◽  
Surface Cracks ◽  
Surface Cracking ◽  
Cold Worked ◽  
The Impact

For cryogenic applications, materials must be cautiously selected because of a drastic degradation in the mechanical properties of materials when they are exposed to very low temperatures. We have developed a new technique using a cold-working and surface-cracking process to overcome such degradation of mechanical properties at low temperatures. This technique intentionally induced surface-cracks in cold-worked austenitic stainless steels and resulted in a significant increase in both strength and fracture at low temperatures. According to the microstructure observations, dissipation of the crack propagation energy with surface-cracks enhanced the impact toughness, showing a ductile fracture mode in even the cryogenic temperature region. In particular, we obtained the high strength and toughness materials by a surface-cracking technique at 5% cold-worked specimen with surface-cracks.

Contribution of Martenistic Transformations to the Plastic Behavior and the Mechanical Properties of Cr, Ni Austenitic Stainless Steels

1983 ◽  
Vol 21 ◽  
Author(s):  
G. Chappuis ◽  
A. Najafi-Zadeh ◽  
M. Harmelin ◽  
P. Lehr
Keyword(s):  
Mechanical Properties ◽  
Martensitic Transformation ◽  
Stainless Steels ◽  
Austenitic Stainless Steels ◽  
Plastic Behavior ◽  
Low Carbon

The aim of this paper is to study the contribution afforded by strain induced martensitic transformation to the plastic behavior under monotonic or cyclic loadings and the mechanical properties of Cr-Ni austenitic stainless steels. The study concerns namely the low carbon 18/10 steel, commonly used in various fields of technics and particularly in cryogenics (liquid gases storage or transportation).

ALZ 316

Alloy Digest ◽  
1999 ◽  
Vol 48 (8) ◽  
Keyword(s):  
Mechanical Properties ◽  
Stainless Steel ◽  
Corrosion Resistance ◽  
Austenitic Stainless Steel ◽  
Physical Properties ◽  
Tensile Properties ◽  
Stainless Steels ◽  
Austenitic Stainless Steels ◽  
Heat Treating

Abstract ALZ 316 is an austenitic stainless steel with good formability, corrosion resistance, toughness, and mechanical properties. It is the basic grade of the stainless steels, containing 2 to 3% molybdenum. After the 304 series, the molybdenum-containing stainless steels are the most widely used austenitic stainless steels. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties. It also includes information on corrosion resistance as well as forming, heat treating, and joining. Filing Code: SS-756. Producer or source: ALZ nv.

scholarly journals Effect of Neutron Irradiation on the Mechanical Properties, Swelling and Creep of Austenitic Stainless Steels

Materials ◽  
2021 ◽  
Vol 14 (10) ◽  
pp. 2622
Author(s):  
Malcolm Griffiths
Keyword(s):  
Mechanical Properties ◽  
Stainless Steels ◽  
Dimensional Stability ◽  
Operating Experience ◽  
Austenitic Stainless Steels ◽  
High Strength ◽  
Gas Production ◽  
Rate Theory ◽  
Fast Reactors ◽  
Internal Structures

Austenitic stainless steels are used for core internal structures in sodium-cooled fast reactors (SFRs) and light-water reactors (LWRs) because of their high strength and retained toughness after irradiation (up to 80 dpa in LWRs), unlike ferritic steels that are embrittled at low doses (<1 dpa). For fast reactors, operating temperatures vary from 400 to 550 °C for the internal structures and up to 650 °C for the fuel cladding. The internal structures of the LWRs operate at temperatures between approximately 270 and 320 °C although some parts can be hotter (more than 400 °C) because of localised nuclear heating. The ongoing operability relies on being able to understand and predict how the mechanical properties and dimensional stability change over extended periods of operation. Test reactor irradiations and power reactor operating experience over more than 50 years has resulted in the accumulation of a large amount of data from which one can assess the effects of irradiation on the properties of austenitic stainless steels. The effect of irradiation on the intrinsic mechanical properties (strength, ductility, toughness, etc.) and dimensional stability derived from in- and out-reactor (post-irradiation) measurements and tests will be described and discussed. The main observations will be assessed using radiation damage and gas production models. Rate theory models will be used to show how the microstructural changes during irradiation affect mechanical properties and dimensional stability.

Technological application of the martensitic transformation of some austenitic stainless steels

1989 ◽  
Vol 60 (10) ◽  
pp. 464-468 ◽  
Author(s):  
Ulrich Reichel ◽  
Brunhild Gabriel ◽  
Martin Kesten ◽  
Birgitt Meier ◽  
Winfried Dahl
Keyword(s):  
Martensitic Transformation ◽  
Stainless Steels ◽  
Austenitic Stainless Steels ◽  
Technological Application

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>

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