Search
Filters
Close

01361 STRESS CORROSION CRACKING OF NICKEL BASE SUPERALLOYS IN AERATED SUPERCRITICAL WATER

Product Number: 51300-01361-SG
ISBN: 01361 2001 CP
Author: L. Fournier , D. Delafosse, C. Bosch and T. Magnin
$0.00
$20.00
$20.00
The stress corrosion cracking behaviour of two nickel base superalloys (A718 and A690) is investigated in aerated supercritical water by means of constant extension rate tensile (CERT) tests at 400°C and 25 MPa. Alloy 718 is observed to be extremely sensitive to intergranular stress corrosion cracking (IGSCC) while alloy 690 is found to be immune to IGSCC. CERT tests are also carried out in air and under vacuum on both alloys at 600°C, i.e. in a temperature domain where nickel base superalloys exhibit oxygen embrittlement. The results obtained strongly suggest that oxidation is controlling both the stress corrosion crack initiation and propagation stages of nickel base superalloys in aerated supercritical water. In the light of these results, the main issue of material selection for the construction of supercritical water oxidation (SCWO) reactors is discussed. Keywords: stress corrosion cracking, nickel base superalloy, supercritical water oxidation (SCWO), alloy 718, alloy 690, oxygen embrittlement.
The stress corrosion cracking behaviour of two nickel base superalloys (A718 and A690) is investigated in aerated supercritical water by means of constant extension rate tensile (CERT) tests at 400°C and 25 MPa. Alloy 718 is observed to be extremely sensitive to intergranular stress corrosion cracking (IGSCC) while alloy 690 is found to be immune to IGSCC. CERT tests are also carried out in air and under vacuum on both alloys at 600°C, i.e. in a temperature domain where nickel base superalloys exhibit oxygen embrittlement. The results obtained strongly suggest that oxidation is controlling both the stress corrosion crack initiation and propagation stages of nickel base superalloys in aerated supercritical water. In the light of these results, the main issue of material selection for the construction of supercritical water oxidation (SCWO) reactors is discussed. Keywords: stress corrosion cracking, nickel base superalloy, supercritical water oxidation (SCWO), alloy 718, alloy 690, oxygen embrittlement.
PRICE BREAKS - The more you buy, the more you save
Quantity
1+
5+
Price
$20.00
$20.00
Product tags
Also Purchased
Picture for 01364 CORROSION BEHAVIOR OF METALS IN
Available for download

01364 CORROSION BEHAVIOR OF METALS IN SUPERCRITICAL WATER SOLUTIONS IN THE PRESENCE OF SALTS

Product Number: 51300-01364-SG
ISBN: 01364 2001 CP
Author: Y. Ikushima, M. Son, H. Kim , y. Kurata, and K. Hatakeda
$20.00
Picture for 01357 Corrosion Behavior of Metals for SCWO
Available for download

01357 Corrosion Behavior of Metals for SCWO Reactors for Organic Waste Processing Plants

Product Number: 51300-01357-SG
ISBN: 01357 2001 CP
Author: Y.Akai, Y.Tsuchiya, N.Saito, and K.Hiruta
$20.00
Picture for 01352 ASSESSING DEGRADATION MECHANISMS IN
Available for download

01352 ASSESSING DEGRADATION MECHANISMS IN SUPERCRITICAL WATER OXIDATION SYSTEMS

Product Number: 51300-01352-SG
ISBN: 01352 2001 CP
Author: D.B. Mitton, N. Eliaz, J.A Cline and R.M, Lalanision
$20.00