Open AccessDegradation of the creep resistance of a Re-containing 10%Cr steel upon creep testing at low applied stress
Author(s) -
Alexandra Fedoseeva,
Ivan Nikitin,
A. E. Fedoseev,
Rustam Kaibyshev
Publication year - 2021
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/1014/1/012012
Subject(s) - creep , materials science , supercritical fluid , laves phase , composite material , metallurgy , drop (telecommunication) , alloy , intermetallic , engineering , telecommunications , chemistry , organic chemistry
New Re-containing steel is a promising material for steam blades of fossil power plants worked at ultra-supercritical parameters of the steam. This steel was subjected to creep testing at 650°C under the applied stresses ranging from 200 to 100 MPa. The steel exhibits excellent creep resistance at high applied stresses; the time to rupture comprises 10,987 hours after the creep test at 650°C/140 MPa. However, a dramatic drop in the creep strength is observed at low applied stresses. A possible reason for this decrease in the creep resistance may be a significant coarsening of the Laves phase particles.