Menu
Search
Filters
Close
Menu

Celebrate World Corrosion Awareness Day with 20% off eCourses and eBooks with code WCAD2024 at checkout!

Influence Of Thermomechanical Processing On Mechanical Properties And Corrosion Resistance Of Super Duplex Stainless Steel UNS S32750.

Picture for Influence Of Thermomechanical Processing On Mechanical Properties And Corrosion Resistance Of Super Duplex Stainless Steel UNS S32750.
Available for download

Duplex stainless steels (DSSs) are based on the Fe-Cr-Ni system and are constituted of 30 to 70 % ferrite and austenite. They combine high tensile strength, good toughness, weldability, and excellent corrosion resistance including stress-corrosion cracking and resistance to localized corrosion.1-3 DSSs can be classified according to the Pitting Resistance Equivalent Number (PREN = Cr + 3.3 Mo + 16 N) in lean duplex (PREN= 22-27), standard (PREN = 28-38), super duplex (PREN = 38-45) and hyperduplex (PREN > 45).

Product Number: 51322-17613-SG
Author: Clara Herrera, Merlin Seifert
Publication Date: 2022
Industries: Corrosion Monitoring and Control , Coatings and Linings , Coatings
$0.00
$20.00
$20.00

Super duplex stainless steels (SDSS) are characterized by a two-phase microstructure of approximately 50% ferrite () and 50% austenite (). SDSS are highly alloyed stainless steels with at least 25 % Cr, 3 % Mo, 6 % Ni and 0.2 % N and offer an excellent combination of good mechanical properties and resistance to general as well as localized corrosion. Despite their good combination of properties in typically solution annealed condition, there is a certain need to increase the strength of these materials. The tensile strength of SDSS can be increased by a thermomechanical process (TMP). The aim of this paper is to study the effect of a TMP on the mechanical properties, mainly tensile strength, and corrosion properties of UNS S32750 (1.4410). The material was submitted to a TMP at temperatures where detrimental phases should not precipitate according to thermodynamic calculations. After TMP, UNS S32750 still displays a ferritic-austenitic microstructure free of secondary phases and exhibits yield strength and ultimate tensile strength higher than 800 MPa (116 ksi) and 950 MPa (138 ksi), respectively. The pitting corrosion resistance UNS S32750 at room temperature is not affected by TMP. At 50 °C, there is a slight reduction of pitting corrosion resistance. The tensile strength of UNS S32750 can be increased without losing its corrosion properties by TMP, enabling the use of this SDSS for applications at high strength and in very aggressive environments.

Super duplex stainless steels (SDSS) are characterized by a two-phase microstructure of approximately 50% ferrite () and 50% austenite (). SDSS are highly alloyed stainless steels with at least 25 % Cr, 3 % Mo, 6 % Ni and 0.2 % N and offer an excellent combination of good mechanical properties and resistance to general as well as localized corrosion. Despite their good combination of properties in typically solution annealed condition, there is a certain need to increase the strength of these materials. The tensile strength of SDSS can be increased by a thermomechanical process (TMP). The aim of this paper is to study the effect of a TMP on the mechanical properties, mainly tensile strength, and corrosion properties of UNS S32750 (1.4410). The material was submitted to a TMP at temperatures where detrimental phases should not precipitate according to thermodynamic calculations. After TMP, UNS S32750 still displays a ferritic-austenitic microstructure free of secondary phases and exhibits yield strength and ultimate tensile strength higher than 800 MPa (116 ksi) and 950 MPa (138 ksi), respectively. The pitting corrosion resistance UNS S32750 at room temperature is not affected by TMP. At 50 °C, there is a slight reduction of pitting corrosion resistance. The tensile strength of UNS S32750 can be increased without losing its corrosion properties by TMP, enabling the use of this SDSS for applications at high strength and in very aggressive environments.

Product tags
Also Purchased
Picture for Influence of K-Rate and Hydrogen Charging on Fracture Toughness of a Super Duplex Stainless Steel
Available for download

Influence of K-Rate and Hydrogen Charging on Fracture Toughness of a Super Duplex Stainless Steel

Product Number: 51318-10891-SG
Author: Carlos Eduardo Fortis Kwietniewski / Tiago Renck / Fabrício Pinheiro dos Santos / Adriano Scheid / Marcelo Sartori / Afonso Reguly
Publication Date: 2018
$20.00

To evaluate through fracture toughness tests the susceptibility of SDSS to HISC and to determine the effect of the cathodic protection potential and the stress intensity factor rate (K-rate).
Picture for A Recent Case Of Intermetallic Precipitations In Super Duplex
Available for download

A Recent Case Of Intermetallic Precipitations In Super Duplex

Product Number: 51322-17627-SG
Author: Henrik Bang, Jakob Mølholm, Kirsten Grønning Sørensen
Publication Date: 2022
$20.00

Production of oil and gas is well known to cause potential corrosion issues due to the CO2 content in the well stream. Carbon steel is widely used for production facilities as e.g. flowlines and manifolds, however, aging of the reservoir increases the number of corrosive agents, such as e.g. CO2, which are known to cause high corrosion rates in carbon steel. Therefore, carbon steel piping is often being replaced with super duplex stainless steel due to its high strength, excellent toughness and good corrosion resistance. Replacing carbon steel with super duplex has been conducted on several mature offshore oilfields in the European North Sea region.
Picture for 11255 Pitting Corrosion Mechanisms of Lean Duplex
Available for download

11255 Pitting Corrosion Mechanisms of Lean Duplex, Duplex and Super Duplex Stainless Steels in Chloride Solutions

Product Number: 51300-11255-SG
ISBN: 2011 11255 CP
Author: J. Saithala, J. Atkinson, H Ubhi, A. Patil
Publication Date: 2011
$20.00
Categories
Industry
Recently viewed
Popular tags
View all

Association for Materials Protection and Performance

© AMPP All Rights Reserved.
Membership Terms of Content Use
Contact Customer Support