TY  - JOUR
AU  - Kuhn, Bernd
AU  - Talik, Michal
TI  - Heat Treatment of High-Performance Ferritic (HiperFer) Steels
JO  - Materials
VL  - 16
IS  - 9
SN  - 1996-1944
CY  - Basel
PB  - MDPI
M1  - FZJ-2023-01971
SP  - 3500 -
PY  - 2023
AB  - High-performance Ferritic (HiperFer) steels are a novel class of heat-resistant, fully ferritic, Laves phase precipitation hardened materials. In comparison to conventional creep strength-enhanced 9–12 wt.% Cr ferritic–martensitic steels, HiperFer features increased mechanical strength, based on a thermodynamically stable distribution of small (Fe,Cr,Si)2(Nb,W) Laves phase precipitates, and—owing to its increased chromium content of 17 wt.%—improved resistance to steam oxidation, resulting in superior temperature capability up to 650 °C. Previous publications focused on alloying, thermomechanical processing, and basic mechanical property evaluation. The current paper concentrates on the effect of heat treatment on microstructural features, especially Laves phase population, and the resulting creep performance. At 650 °C and a creep stress of 100 MPa, an increase in rupture time of about 100% was achieved in comparison to the solely thermomechanically processed state.
LB  - PUB:(DE-HGF)16
C6  - 37176382
UR  - <Go to ISI:>//WOS:000987643800001
DO  - DOI:10.3390/ma16093500
UR  - https://juser.fz-juelich.de/record/1007173
ER  -