A new 12% chromium steel strengthened by Z-phase precipitates
Artikel i vetenskaplig tidskrift, 2016
In order to increase the corrosion resistance and simultaneously maintain the creep resistance of 9–12% Cr steels at 650 °C, a new alloy design concept was proposed, using thermodynamically stable Z-phase (CrTaN) precipi- tates to strengthen the steel. A new trial Z-phase strengthened 12% Cr steel was produced and creep tested. The steel exhibited good long-term creep resistance. Dense nano-sized Z-phase precipitates were formed at an early stage, and coarsened slowly. They remained small after more than 10,000 h.
Martensitic steels
Creep
Three-dimensional atom probe
Transmission electron microscopy
Författare
Fang Liu
Chalmers, Fysik, Materialens mikrostruktur
Masoud Rashidi
Chalmers, Fysik, Materialens mikrostruktur
Lennart Johansson
Siemens Energy
John Hald
Danmarks Tekniske Universitet (DTU)
Hans-Olof Andrén
Chalmers, Fysik, Materialens mikrostruktur
Scripta Materialia
1359-6462 (ISSN)
Vol. 113 93-96Drivkrafter
Hållbar utveckling
Styrkeområden
Energi
Materialvetenskap
Ämneskategorier
Annan materialteknik
Metallurgi och metalliska material
Den kondenserade materiens fysik
DOI
10.1016/j.scriptamat.2015.10.030