Menu
Search
Filters
Close
Menu

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

51318-11173-Sour testing of corrosion resistant alloys: Comparison of four-point bend and uniaxial tensile test methods

Picture for Sour testing of corrosion resistant alloys: Comparison of four-point bend and uniaxial tensile test methods
Available for download

To resolve discrepancies between results of four-point bend tests and uniaxial constant load tests on UNS S31603 in sour environments, a series of tests was conducted to compare the two test methodologies.

Product Number: 51318-11173-SG
Author: Gareth Hinds / James Hesketh / Alan Turnbull
Publication Date: 2018
Industry: Science of Corrosion
$0.00
$20.00
$20.00

In order to resolve reported discrepancies between the results of four-point bend tests and uniaxial constant load tests on UNS S31603 in sour environments, a series of systematic tests has been conducted to compare the two test methodologies under carefully controlled conditions. It was demonstrated conclusively that tests performed in uniaxial tension at constant load are inherently more severe than tests performed in constant displacement four-point bending due to the presence of low-temperature creep in the former. The enhanced susceptibility to stress corrosion cracking is attributed to the presence of additional tensile plastic strain in specimens that have undergone low-temperature creep. Tests performed in uniaxial tension were also found to be more severe than those performed in four-point bend even when dynamic strain was eliminated by performing them at constant displacement. A key observation is that no load relaxation due to low-temperature creep occurs during the four-point test. The results emphasize the need to take into consideration factors such as the level of tensile plastic strain in service when selecting the appropriate test method for a given application.

Key words: stress corrosion cracking, corrosion resistant alloys, hydrogen sulfide, four-point bend testing, uniaxial tensile testing

In order to resolve reported discrepancies between the results of four-point bend tests and uniaxial constant load tests on UNS S31603 in sour environments, a series of systematic tests has been conducted to compare the two test methodologies under carefully controlled conditions. It was demonstrated conclusively that tests performed in uniaxial tension at constant load are inherently more severe than tests performed in constant displacement four-point bending due to the presence of low-temperature creep in the former. The enhanced susceptibility to stress corrosion cracking is attributed to the presence of additional tensile plastic strain in specimens that have undergone low-temperature creep. Tests performed in uniaxial tension were also found to be more severe than those performed in four-point bend even when dynamic strain was eliminated by performing them at constant displacement. A key observation is that no load relaxation due to low-temperature creep occurs during the four-point test. The results emphasize the need to take into consideration factors such as the level of tensile plastic strain in service when selecting the appropriate test method for a given application.

Key words: stress corrosion cracking, corrosion resistant alloys, hydrogen sulfide, four-point bend testing, uniaxial tensile testing

Product tags
Also Purchased
Picture for Corrosion Resistance of High Strength UNS S31010 High Nitrogen Stainless Steel
Available for download

51318-11161-Corrosion Resistance of High Strength UNS S31010 High Nitrogen Stainless Steel

Product Number: 51318-11161-SG
Author: Luca Foroni / Louis Lherbier / Carlo Malara
Publication Date: 2018
$20.00

High strength UNS S31010 with 140 ksi MYS has been produced by warm work hardening and cold work hardening. The characterization of high strength alloy with respect to corrosion resistance is discussed in this paper.
Picture for Evaluation of Corrosion of Austenitic Steels and Comparison with Martensitic Stainless Steel 17-4
Available for download

51318-11163-Evaluation of Corrosion of Austenitic Steels and Comparison with Martensitic Stainless Steel 17-4

Product Number: 51318-11163-SG
Author: Tatiana R. Ayers, Manuel P. Marya, Dean Lauppe
Publication Date: 2018
$20.00

A series of NACE TM0177 Tensile Test Method A tests were conducted on various commercially available chromium-manganese austenitic stainless steels as well as 17-4PH in the 110ksi-to-130ksi yield strength range (34 - 35 HRC max).
Picture for Preliminary corrosion testing of explosive cladded materials in geothermal environment
Available for download

51318-11154-Preliminary corrosion testing of explosive cladded materials in geothermal environment

Product Number: 51318-11154-SG
Author: Kolbrun R. Ragnarsdottir / Sigrun N. Karlsdottir / Aðalsteinn Arnbjornsson / Helen O. Haraldsdottir
Publication Date: 2018
$20.00

Austenitic stainless, S31254, and Hastelloy, N10276, were clad on low carbon steel plates with explosive welding for testing in a geothermal environment. Results from visual inspection and microstructural & chemical composition analysis with a scanning electron microscopy and X-ray energy dispersive spectroscopy  
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