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 industrial turbomachinery

John Hald

Danmarks Tekniske Universitet (DTU)

Hans-Olof Andrén

Chalmers, Fysik, Materialens mikrostruktur

Scripta Materialia

1359-6462 (ISSN)

Vol. 113 93-96

Drivkrafter

Hållbar utveckling

Styrkeområden

Energi

Materialvetenskap

Ämneskategorier

Annan materialteknik

Metallurgi och metalliska material

Den kondenserade materiens fysik

DOI

10.1016/j.scriptamat.2015.10.030

Mer information

Senast uppdaterat

2018-10-16