Hydrogen Induced Cracking Susceptibility of High-Strength Line Pipe Steels

CORROSION ◽  
1986 ◽  
Vol 42 (6) ◽  
pp. 337-345 ◽  
Author(s):  
K. Matsumoto ◽  
Y. Kobayashi ◽  
K. Ume ◽  
K. Murakami ◽  
K. Taira ◽  
...  
Keyword(s):  
High Strength ◽  
Pipe Steels ◽  
Line Pipe ◽  
Hydrogen Induced Cracking

ULTRASONIC EVALUATION OF RESISTANCE TO HYDROGEN-INDUCED CRACKING OF LINE PIPE STEELS

1987 ◽  
pp. 359-365
Author(s):  
J.C. ALBERT ◽  
O. CASSIER ◽  
H. MARGOT-MARETTE ◽  
G. BARDOU ◽  
P. VIRLOUVET
Keyword(s):  
Pipe Steels ◽  
Line Pipe ◽  
Ultrasonic Evaluation ◽  
Hydrogen Induced Cracking

Hydrogen Compatibility and Suitability of (Ni)-Cr-Mo High-Strength Low-Alloy Seamless Line Pipe Steels for Pressure Vessels for Hydrogen Storage

2018 ◽  
Author(s):  
Akihide Nagao ◽  
Nobuyuki Ishikawa ◽  
Toshio Takano
Keyword(s):  
Mechanical Properties ◽  
High Pressure ◽  
High Strength ◽  
Pressure Vessels ◽  
Hydrogen Gas ◽  
Low Alloy Steels ◽  
Pipe Steels ◽  
Line Pipe ◽  
Alloy Steels ◽  
Pressure Hydrogen

Cr-Mo and Ni-Cr-Mo high-strength low-alloy steels are candidate materials for the storage of high-pressure hydrogen gas. Forging materials of these steels have been used for such an environment, while there has been a strong demand for a higher performance material with high resistance to hydrogen embrittlement at lower cost. Thus, mechanical properties of Cr-Mo and Ni-Cr-Mo steels made of quenched and tempered seamless pipes in high-pressure hydrogen gas up to 105 MPa were examined in this study. The mechanical properties were deteriorated in the presence of hydrogen that appeared in reduction in local elongation, decrease in fracture toughness and accelerated fatigue-crack growth rate, although the presence of hydrogen did not affect yield and ultimate tensile strengths and made little difference to the fatigue endurance limit. It is proposed that pressure vessels for the storage of gaseous hydrogen made of these seamless line pipe steels can be designed.

Hydrogen-Induced Cracking of Line Pipe Steels Used in Sour Service

CORROSION ◽  
1993 ◽  
Vol 49 (7) ◽  
pp. 531-535 ◽  
Author(s):  
R. W. Revie ◽  
V. S. Sastri ◽  
M. Elboujdaini ◽  
R. R. Ramsingh ◽  
Y. Lafrenière
Keyword(s):  
Pipe Steels ◽  
Line Pipe ◽  
Hydrogen Induced Cracking ◽  
Sour Service

scholarly journals Low temperature tensile properties of line pipe steels

2015 ◽  
Vol 6 (3) ◽  
pp. 8
Author(s):  
Harold Tubex ◽  
Koen Van Minnebruggen ◽  
Wim De Waele
Keyword(s):  
Tensile Properties ◽  
Low Temperatures ◽  
Oil And Gas ◽  
High Strength ◽  
The Arctic ◽  
Test Results ◽  
Pipe Steels ◽  
Line Pipe ◽  
Expected Increase ◽  
Strength And Ductility

Given the expected increase in Arctic oil and gas exploitation, there is a demand for high-strength line pipe steels able to cope with the Arctic climate. The state-of-the-art of the tensile properties of API 5L steels at low temperatures is reviewed and discussed. Well-known characteristics such as an increase in strength and Young’s modulus with decreasing temperatures are confirmed. The Y/T ratio is fairly unaffected by changes in temperature. Lüders elongation manifests itself at low temperatures where the Lüders plateau tends to increase. Conflicting statements about the relation between ductility and temperature were found. Altogether, quantifiable test results are scarce, especially for the high strength grades from API 5L X90 grade onwards. The urgent need for more tensile strength and ductility data of these steels at low temperatures is stated and defended.

Influence of vanadium on transformation characteristics of high-strength line-pipe steels

1981 ◽  
Vol 8 (1) ◽  
pp. 458-465 ◽  
Author(s):  
R. C. Cochrane ◽  
W. B. Morrison
Keyword(s):  
High Strength ◽  
Pipe Steels ◽  
Line Pipe

Effects of Microstructural Inhomogeneity on HIC Susceptibility and HIC Evaluation Methods for Linepipe Steels for Sour Service

2014 ◽  
Author(s):  
Kyu Tae Kim ◽  
Sang Gi Ko ◽  
Jong Man Han
Keyword(s):  
Deep Sea ◽  
Acicular Ferrite ◽  
Evaluation Methods ◽  
Polygonal Ferrite ◽  
Internal Quality ◽  
Pipe Steels ◽  
Line Pipe ◽  
Microstructural Inhomogeneity ◽  
Hydrogen Induced Cracking ◽  
Sour Service

It has been well documented that slab internal quality is one of the key factors for reduced susceptibility of hydrogen induced cracking (HIC) in line pipe steels designed for sour gas service. In addition, the creation of a homogeneous microstructure which is heavily influenced by the slab internal quality is also a critical key parameter to reduce the HIC susceptibility in higher strength line pipe steel grade X60 and above. For the application of deep sea linepipe exposed to higher external pressure environments, heavy gauge in combination with higher strength steel is essential. Homogeneity of the steel microstructure is a key to success for thicker plates used in sour service HIC applications in combination with a deep sea environment. In this paper, various microstructures were compared along with an evaluation of the effects of the various microstructures on HIC susceptibility in grades X52, X65 and X70 designed for sour service. The various microstructures compared consisted of polygonal ferrite and pearlite in the X52 and polygonal ferrite, pearlite, acicular ferrite and bainite in the X65 and X70. The effect of microstructural inhomogeneity on HIC susceptibility was comparatively lower for the X52 than that of the X65 and X70. The microstructure of grade X65 and X70 were different due to the different conditions of rolling and cooling that were applied. Grades X65/X70 had a microstructure of polygonal ferrite/pearlite with bainite islands that resulted in a high crack length ratio (CLR) value caused by different hardness regions across the microstructural matrix. A homogeneous fine acicular ferrite microstructure produced by optimizing temperature control during rolling and cooling showed no hydrogen induced cracking. In addition, this alloy/process/microstructure design resulted in improved toughness results in low temperature drop weight tear test (DWTT). This paper will describe the successful production results of plate and pipe for high strength heavier gauge line pipe steels with highly homogeneous microstructures designed for sour service by controlling chemical design and process conditions in rolling and cooling. In addition, HIC evaluation methods utilizing both a traditional NACE TM0284 method versus that of a Scan-UT method were conducted and compared. A proposal to make the NACE TM0284 testing method more reliable by using Scan-UT method will be presented.

Sign in / Sign up

Export Citation Format

Share Document