Microstructure and Room Temperature Mechanical Properties of a New Corrosion-Resistant Alloy GH945 for Oil and Gas Applications

2016 ◽  
Vol 849 ◽  
pp. 609-617
Author(s):  
Zhao Xia Shi ◽  
Xiao Feng Yan ◽  
Chun Hua Duan
Keyword(s):  
Mechanical Properties ◽  
Heat Treatment ◽  
Impact Toughness ◽  
Oil And Gas ◽  
High Strength ◽  
Corrosion Resistant ◽  
Σ Phase ◽  
Resistant Alloy ◽  
Corrosion Resistant Alloy ◽  
Type Carbide

The microstructure and mechanical properties of a new corrosion-resistant alloy GH945 with high strength for oil and gas production were studied in this paper. The results showed that the main precipitations of GH945 alloy after solution heat treatment and two-stage age hardening treatment were γ′ and γ′′ phase, MC-type carbide, σ phase and M23C6-type carbide. The increase of primary aging temperature not only promoted the precipitation of σ phase and film of continuous M23C6 carbide on the grain boundary, but also led to the coarsening of γ′ and γ′′ phase, which resulted in the decrease of yield strength and impact toughness. Alloy with high Nb content had high strength but low impact toughness. The following heat treatment was preferably used to obtain the combination of high strength and excellent ductility and toughness for GH945 alloy: 1010 °C/70 min, WQ+ 735 °C/9 h + FC to 615 °C/18 h, AC.

SANICRO 41

Alloy Digest ◽  
1995 ◽  
Vol 44 (1) ◽  
Keyword(s):  
Corrosion Resistance ◽  
Physical Properties ◽  
Oil And Gas ◽  
High Strength ◽  
Heat Treating ◽  
Gas Production ◽  
Oil And Gas Production ◽  
Corrosion Resistant ◽  
Corrosion Resistant Alloy ◽  
Nickel Base

Abstract SANDVIK SANICRO 41 is a nickel-base corrosion resistant alloy with a composition balanced to resist both oxidizing and reducing environments. A high-strength version (110) is available for oil and gas production. This datasheet provides information on composition, physical properties, and tensile properties. It also includes information on corrosion resistance as well as forming, heat treating, and joining. Filing Code: Ni-475. Producer or source: Sandvik.

ALLEGHENY LUDLUM AL 29-4C

Alloy Digest ◽  
1993 ◽  
Vol 42 (11) ◽  
Keyword(s):  
Corrosion Resistance ◽  
Physical Properties ◽  
Tensile Properties ◽  
Heat Exchangers ◽  
Power Plants ◽  
High Strength ◽  
Corrosion Resistant ◽  
Resistant Alloy ◽  
Corrosion Resistant Alloy ◽  
Geothermal Power

Abstract AL 29-4C is a highly corrosion resistant alloy with a relatively high strength. This combination allows the use of lighter gage tubes, and has led to its use in the brine heat exchangers of geothermal power plants. This datasheet provides information on composition, physical properties, elasticity, and tensile properties. It also includes information on corrosion resistance as well as forming and joining. Filing Code: SS-554. Producer or source: Allegheny Ludlum Corporation.

Corrosion-Resistant Alloys for Tubings and Casings and Alloy Material Selection in Oil and Gas Wells

2013 ◽  
Vol 690-693 ◽  
pp. 276-279
Author(s):  
Ling Feng Li
Keyword(s):  
Oil And Gas ◽  
Material Selection ◽  
Influence Factors ◽  
Gas Wells ◽  
Corrosion Resistant ◽  
Resistant Alloy ◽  
Alloy Material ◽  
Oil And Gas Wells ◽  
Corrosion Resistant Alloy ◽  
Selection For

This paper presents the technology background, the types and basic compositions of corrosion-resistant alloys for tubings and casings in oil and gas wells, modes of corrosion and influence factors for corrosion-resistant alloy, corrosion-resistant alloys material selection for tubings and casings in oil and gas wells. And the technology above has a good practicality for application .

Investigation of structure and heat treatment of various grades of corrosion-resistant alloy VDM® alloy C-4

2018 ◽  
Author(s):  
A. F. Gibadullina ◽  
A. V. Shak ◽  
A. Yu. Zhilyakov ◽  
S. V. Belikov ◽  
I. B. Polovov ◽  
...  
Keyword(s):  
Heat Treatment ◽  
Corrosion Resistant ◽  
Resistant Alloy ◽  
Corrosion Resistant Alloy

Numerical Post-Buckling Analysis of Mechanically Lined Corrosion Resistant Alloy Pipes

2017 ◽  
Vol 140 (1) ◽  
Author(s):  
Jiansha Dong ◽  
Fahrettin Ozturk ◽  
Firas Jarrar ◽  
Jamal Y. Sheikh-Ahmad
Keyword(s):  
Contact Pressure ◽  
Oil And Gas ◽  
Oil And Gas Industry ◽  
Buckling Analysis ◽  
Gas Industry ◽  
Corrosion Resistant ◽  
Finite Element Software ◽  
Resistant Alloy ◽  
Post Buckling ◽  
Corrosion Resistant Alloy

As an economical alternative to solid corrosion resistant alloy (CRA) and clad pipes, mechanically lined or sleeved CRA pipes are proven to be effective in the transport of corrosive fluids in oil and gas industry. A major issue with these pipes is that pressure drop or fluctuations may cause buckling of the liner, resulting in irreparable and costly damage. This issue should be resolved in order to fully implement this type of pipes in oil and gas industry. In this study, post-buckling analysis of liner pipe encased in carbon steel outer pipe is carried out following the hydraulic expansion manufacturing process. Commercially available abaqus finite element software is employed. The proposed model is partly verified with an analytical solution and other numerical results under the condition of no residual contact pressure. Results of the parametric study reveal that increasing the residual contact pressure and decreasing the magnitude of geometric imperfection can both contribute to enhancing the buckling resistance.

Duplex Stainless Steels: The Versatile Alloys

CORROSION ◽  
10.5006/3403 ◽  
2019 ◽  
Vol 76 (5) ◽  
pp. 500-510
Author(s):  
Roger Francis
Keyword(s):  
Corrosion Resistance ◽  
Stainless Steels ◽  
Oil And Gas ◽  
Austenitic Stainless Steels ◽  
High Strength ◽  
Oil And Gas Industry ◽  
Duplex Stainless Steels ◽  
Gas Industry ◽  
Corrosion Resistant ◽  
Corrosion Resistant Alloy

Duplex stainless steels were first manufactured early in the 20th century, but it was the invention of argon oxygen decarburization melting and the addition of nitrogen that made the alloys stronger, more weldable, and more corrosion resistant. Today, there is a family of duplex stainless steels covering a range of compositions and properties, but they all share high strength and good corrosion resistance, especially to stress corrosion cracking, compared with similar austenitic stainless steels. This paper briefly reviews the range of modern duplex stainless steels and why they are widely used in many industries. They are the workhorse corrosion-resistant alloy in the oil and gas industry. In this paper, their use in three industries common in Australia and New Zealand is reviewed: oil and gas, mineral processing, and desalination. The corrosion resistance in the relevant fluids is reviewed and some case histories highlight both successes and potential problems with duplex alloys in these industries.

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