Grain-size and heat-treatment effects in hydrogen-assisted cracking of austenitic stainless steels

1982 ◽  
Vol 17 (11) ◽  
pp. 3165-3172 ◽  
Author(s):  
E. Minkovitz ◽  
D. Eliezer
Keyword(s):  
Heat Treatment ◽  
Grain Size ◽  
Stainless Steels ◽  
Treatment Effects ◽  
Austenitic Stainless Steels ◽  
Hydrogen Assisted Cracking

Strain-induced martensite effects on transgranular carbide precipitation in type 304 stainless steels

1991 ◽  
Vol 49 ◽  
pp. 604-605
Author(s):  
A.H. Advani ◽  
L.E. Murr ◽  
D. Matlock
Keyword(s):  
Heat Treatment ◽  
Grain Boundary ◽  
Stress Corrosion Cracking ◽  
Stainless Steels ◽  
Deformation Twin ◽  
Austenitic Stainless Steels ◽  
Carbide Precipitation ◽  
Strain Induced Martensite ◽  
Type 304

Thermomechanically induced strain is a key variable producing accelerated carbide precipitation, sensitization and stress corrosion cracking in austenitic stainless steels (SS). Recent work has indicated that higher levels of strain (above 20%) also produce transgranular (TG) carbide precipitation and corrosion simultaneous with the grain boundary phenomenon in 316 SS. Transgranular precipitates were noted to form primarily on deformation twin-fault planes and their intersections in 316 SS.Briant has indicated that TG precipitation in 316 SS is significantly different from 304 SS due to the formation of strain-induced martensite on 304 SS, though an understanding of the role of martensite on the process has not been developed. This study is concerned with evaluating the effects of strain and strain-induced martensite on TG carbide precipitation in 304 SS. The study was performed on samples of a 0.051%C-304 SS deformed to 33% followed by heat treatment at 670°C for 1 h.

Effects of heat treatment and alloying on the radiation erosion of austenitic stainless steels and alloys

1982 ◽  
Vol 53 (4) ◽  
pp. 697-706 ◽  
Author(s):  
E. E. Goncharov ◽  
M. I. Guseva ◽  
B. A. Kalin ◽  
O. A. Kozhevnikov ◽  
A. N. Lapin ◽  
...  
Keyword(s):  
Heat Treatment ◽  
Stainless Steels ◽  
Austenitic Stainless Steels ◽  
Radiation Erosion

Study on the Effects of Heat Treatments on the Physical and Mechanical Characteristics of 1.4301 Stainless Steel

2021 ◽  
Vol 42 ◽  
pp. 57-62
Author(s):  
Maria Stoicănescu
Keyword(s):  
Heat Treatment ◽  
Stainless Steel ◽  
Stainless Steels ◽  
Mechanical Characteristics ◽  
Austenitic Stainless Steels ◽  
Heat Treatments ◽  
Hot Plastic Deformation ◽  
Improved Characteristics ◽  
Physical And Mechanical Characteristics

The 1.4301 stainless steel is part of the category of austenitic stainless steels, steels which do no undergo heat treatments in general, as they are intended for hot plastic deformation in particular. The aim of the research presented in this paper was to obtain significantly improved characteristics of the resistance properties in relation to the values obtained under classical conditions, by applying heat treatments. Samples taken from the delivery state material underwent annealing, quenching and ageing heat treatments. Subsequently, the samples thus treated were subjected to tests enabling the determination of the correlations between the heat treatment parameters, the structure and the properties.

Influence of Grain Size on Recrystallisation During hot Working of Austenitic Stainless Steels

1999 ◽  
Vol 578 ◽  
Author(s):  
J. A. Whiteman ◽  
Y. Choi ◽  
C.M. Sellars
Keyword(s):  
Grain Size ◽  
Stainless Steels ◽  
Experimental Studies ◽  
Austenitic Stainless Steels ◽  
Hot Working ◽  
Nucleation Density ◽  
Empirical Relationships ◽  
Physically Based Model ◽  
Grain Sizes ◽  
Physically Based

AbstractDuring the hot rolling of austenitic stainless steels, complete static recrystallisation is expected between passes unless finishing temperatures are low. Typically progressive refinement takes place to grain sizes in the range 20–50μm. However, most experimental studies of the effect of strain, strain rate, temperature and initial grain size on recrystallisation kinetics and recrystallised grain size under hot working conditions have been carried out on initial grain sizes greater than 50μm. Empirical relationships from these data and from more limited results of CMn steels have been extrapolated to smaller grain sizes for use in models of microstructural evolution during rolling.Recent development of a physically based model for the effects of initial grain size, assuming that site saturated nucleation occurs at grain corners, grain edges, grain faces and at intragranular sites leads to interdependence of the effects of strain and grain sizeon nucleation density and hence on recrystallised grain size and recrystallisation rate. Experimental evidence available in the literature and some new results on finer grained Type 316 stainless steel are reviewed and compared with the expectations from the model.

Grain Growth Control in Grain Boundary Engineered Microstructures

2012 ◽  
Vol 715-716 ◽  
pp. 103-108 ◽  
Author(s):  
Valerie Randle ◽  
Mark Coleman
Keyword(s):  
Grain Size ◽  
Grain Boundary ◽  
Stainless Steels ◽  
Growth Control ◽  
Austenitic Stainless Steels ◽  
Grain Boundary Engineering ◽  
Size Measurement ◽  
Annealing Twins ◽  
And Control ◽  
Measurement And Control

Grain boundary engineering (GBE) to promote degradation-resistant interfaces in the microstructure usually requires that the grain size remains small so that strength is not compromised. Aspects of grain size measurement and control will be reviewed and discussed for a variety of GBE materials such as copper, nickel, nickel-based alloys and austenitic stainless steels, particularly in the light of the high proportion of annealing twins that constitute the GBE microstructure.

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