Delamination susceptibility and cracking resistance of reinforced quasimomolithic low-alloy steels

1988 ◽  
Vol 24 (1) ◽  
pp. 76-81
Author(s):  
V. M. Goritskii ◽  
N. E. Demygin ◽  
K. M. Sofronov ◽  
V. I. Shed
Keyword(s):  
Low Alloy Steels ◽  
Cracking Resistance ◽  
Alloy Steels

Effect of Molybdenum on Sulfide Stress Cracking Resistance of Low-Alloy Steels

CORROSION ◽  
1994 ◽  
Vol 50 (9) ◽  
pp. 695-704 ◽  
Author(s):  
C.-M. Liao ◽  
J.-L. Lee
Keyword(s):  
Low Alloy Steels ◽  
Cracking Resistance ◽  
Stress Cracking ◽  
Sulfide Stress ◽  
Alloy Steels ◽  
Sulfide Stress Cracking

scholarly journals Effect of Nickel on the Hydrogen Stress Cracking Resistance of Ferritic/Pearlitic Low Alloy Steels

CORROSION ◽  
10.5006/2724 ◽  
2018 ◽  
Vol 74 (7) ◽  
pp. 801-818
Author(s):  
Hans Husby ◽  
Philip Wagstaff ◽  
Mariano Iannuzzi ◽  
Roy Johnsen ◽  
Mariano Kappes
Keyword(s):  
Oil And Gas ◽  
Nickel Content ◽  
Test Method ◽  
Slow Strain Rate Test ◽  
Low Alloy Steels ◽  
Cracking Resistance ◽  
Stress Cracking ◽  
Sulfide Stress ◽  
Alloy Steels ◽  
Rate Test

Nickel additions to low alloy steels improve mechanical and technological properties. However, Part 2 of ISO Standard 15156 limits the nickel content to a maximum of 1 wt% in oil and gas environments containing H2S because of controversial concerns regarding sulfide stress cracking. The objective of this work was to investigate the effect of nickel in solid solution in the ferrite phase on hydrogen stress cracking resistance. Ferritic/pearlitic research-grade low alloy steels with nominal nickel contents of 0, 1, 2, and 3 wt% were tested by the slow strain rate test method with cathodic hydrogen charging to −1.05 VAg/AgCl and −2 VAg/AgCl. No difference in fracture mode or morphology was found between the alloys. However, the plastic elongation ratios and reduction in area ratios decreased with increasing nickel content when tested at −2 VAg/AgCl. The direct and indirect effects of nickel, such as the influence of an increasing fraction of pearlite with increasing nickel content, are discussed.

The Effect of Nickel on Hydrogen Cracking Resistance in Low Alloy Steels—A Review

CORROSION ◽  
1982 ◽  
Vol 38 (9) ◽  
pp. 457-463 ◽  
Author(s):  
Bruce D. Craig
Keyword(s):  
Petroleum Industry ◽  
Low Alloy Steels ◽  
Cracking Resistance ◽  
Hydrogen Cracking ◽  
Stress Cracking ◽  
True Effect ◽  
Ni Addition ◽  
Starting Point ◽  
Alloy Steels

Abstract Literature is reviewed on the effect of nickel in low alloy steels on their resistance to hydrogen stress cracking. The greatest portion of literature pertains to H2S environments since there is a controversy in the petroleum industry as to the effect of Ni. Addition of greater than 1 % Ni to carbon and low alloy steels is considered to be either detrimental or of no effect in an alloy's resistance to hydrogen stress cracking. This review should provide a starting point from which more organized studies can be performed to evaluate the true effect of Ni on hydrogen cracking resistance.

A Method for Improving Hydrogen Sulfide Accelerated Cracking Resistance of Low Alloy Steels

CORROSION ◽  
1969 ◽  
Vol 25 (9) ◽  
pp. 380-388 ◽  
Author(s):  
E. SNAPE ◽  
F. W. SCHALLER ◽  
R. M. FORBES JONES
Keyword(s):  
Hydrogen Sulfide ◽  
Low Alloy Steels ◽  
Cracking Resistance ◽  
Alloy Steels

Roles of Composition and Microstructure in Sulfide Cracking of Steel

CORROSION ◽  
1968 ◽  
Vol 24 (9) ◽  
pp. 261-282 ◽  
Author(s):  
E. SNAPE
Keyword(s):  
Ferrite Matrix ◽  
Isothermal Transformation ◽  
Strength Level ◽  
Low Alloy Steels ◽  
Cracking Resistance ◽  
Cracking Behavior ◽  
Alloy Steels

Abstract The sulfide cracking behavior of a number of carbon and low alloy steels is described. Susceptibility to sulfide cracking is shown to depend primarily on microstructure. Steels with uniform, spheroidized carbides in a ferrite matrix have the greatest cracking resistance at any given strength level. The presence of untempered martensite in the microstructure drastically reduces cracking resistance. Lamellar carbides resulting from either normalizing and tempering or isothermal transformation give rise to cracking resistance intermediate between steels fully quenched and tempered and steels containing untempered martensite.

Evaluation of Sulfide Corrosion Cracking Resistance in Low Alloy Steels

CORROSION ◽  
1977 ◽  
Vol 33 (3) ◽  
pp. 98-107 ◽  
Author(s):  
R. B. HEADY
Keyword(s):  
Corrosion Cracking ◽  
Low Alloy Steels ◽  
Cracking Resistance ◽  
Sulfide Corrosion ◽  
Alloy Steels

Hydrogen stress cracking resistance and hydrogen transport properties of ASTM A508 grade 4N

CORROSION ◽  
10.5006/3949 ◽  
2021 ◽  
Author(s):  
Esteban Rodoni ◽  
Andreas Viereckl ◽  
Zakaria Quadir ◽  
Aaron Dodd ◽  
Kim Verbeken ◽  
...  
Keyword(s):  
Hydrogen Embrittlement ◽  
Yield Strength ◽  
Alloy Steel ◽  
Hydrogen Diffusion ◽  
Low Alloy Steels ◽  
Low Alloy Steel ◽  
Cracking Resistance ◽  
Stress Cracking ◽  
High Nickel ◽  
Alloy Steels

Low alloy steels combine relatively low cost with exceptional mechanical properties, making them commonplace in oil and gas equipment. However, their strength and hardness are restricted for sour environments to prevent different forms of hydrogen embrittlement. Materials used in sour services are regulated by the ISO 15156-2 standard, which imposes a maximum hardness of 250 HV (22 HRC) and allows up to 1.0 wt% Ni additions due to hydrogen embrittlement concerns. Low alloy steels that exceed the ISO 15156-2 limit have to be qualified for service, lowering their commercial appeal. As a result, high-performing, usually high-nickel, low alloy steels used successfully in other industries are rarely considered for sour service. In this work, the hydrogen stress cracking resistance of the high-nickel (3.41 wt%), quenched and tempered, nuclear-grade ASTM A508 Gr.4N low alloy steel was investigated using slow strain rate testing as a function of applied cathodic potential. Results showed that the yield strength and ultimate tensile strength were unaffected by hydrogen, even at a high negative potential of -2.00 V<sub>Ag/AgCl</sub>. Hydrogen embrittlement effects were observed once the material started necking, manifested by a loss in ductility with increasing applied cathodic potentials. Indeed, A508 Gr.4N was less affected by hydrogen at high cathodic potentials than a low-strength (yield strength = 340 MPa) ferritic-pearlitic low alloy steel of similar nickel content. Additionally, hydrogen diffusivity was measured using the hydrogen permeation test. The calculated hydrogen diffusion coefficient of the ASTM A508 Gr.4N was two orders of magnitude smaller when compared to that of ferritic-pearlitic steels. Hydrogen embrittlement and diffusion results were linked to the microstructure features. The microstructure consisted in a bainitic/martensitic matrix with the presence of Cr<sub>23</sub>C<sub>6</sub> carbides as well as Mo and V-rich precipitates, which might have played a role in retarding hydrogen diffusion, kept responsible for the improved HE resistance.

Effects of Mn, P, and mo on sulfide stress cracking resistance of high strength low alloy steels

1988 ◽  
Vol 19 (9) ◽  
pp. 2171-2177 ◽  
Author(s):  
Hitoshi Asahi ◽  
Yasuo Sogo ◽  
Masakatsu Ueno ◽  
Hirokichi Higashiyama
Keyword(s):  
High Strength ◽  
Low Alloy Steels ◽  
Cracking Resistance ◽  
Stress Cracking ◽  
Sulfide Stress ◽  
Alloy Steels ◽  
Sulfide Stress Cracking

Effects of cooling rate on the mechanical properties of dual phase treated vanadium steels

1983 ◽  
Vol 41 ◽  
pp. 220-221
Author(s):  
L.J. Chen ◽  
H.C. Cheng ◽  
J.R. Gong ◽  
J.G. Yang
Keyword(s):  
Mechanical Properties ◽  
Cooling Rate ◽  
Automobile Industry ◽  
High Strength ◽  
Weight Percent ◽  
Low Alloy Steels ◽  
Dual Phase ◽  
Resource Requirement ◽  
Alloy Steels ◽  
Potential Weight

For fuel savings as well as energy and resource requirement, high strength low alloy steels (HSLA) are of particular interest to automobile industry because of the potential weight reduction which can be achieved by using thinner section of these steels to carry the same load and thus to improve the fuel mileage. Dual phase treatment has been utilized to obtain superior strength and ductility combinations compared to the HSLA of identical composition. Recently, cooling rate following heat treatment was found to be important to the tensile properties of the dual phase steels. In this paper, we report the results of the investigation of cooling rate on the microstructures and mechanical properties of several vanadium HSLA steels.The steels with composition (in weight percent) listed below were supplied by China Steel Corporation: 1. low V steel (0.11C, 0.65Si, 1.63Mn, 0.015P, 0.008S, 0.084Aℓ, 0.004V), 2. 0.059V steel (0.13C, 0.62S1, 1.59Mn, 0.012P, 0.008S, 0.065Aℓ, 0.059V), 3. 0.10V steel (0.11C, 0.58Si, 1.58Mn, 0.017P, 0.008S, 0.068Aℓ, 0.10V).

Characterization of Precipitation Behavior and Fracture Toughness along Thickness Direction in SA508 Gr.3 Mn-Mo-Ni Low Alloy Steels

2015 ◽  
Vol 53 (10) ◽  
pp. 700-710 ◽  
Author(s):  
Min-Chul Kim ◽  
Jaemin Song ◽  
Seokmin Hong ◽  
Bong-Sang Lee
Keyword(s):  
Fracture Toughness ◽  
Low Alloy Steels ◽  
Thickness Direction ◽  
Precipitation Behavior ◽  
Alloy Steels
Sign in / Sign up

Export Citation Format

Share Document