Fatigue Damage Development in 14MoV6-3 Steel for Power Plant Pipes Monitored by Digital Image Correlation

Abstract In this paper, fatigue damage development of 14MoV6-3 (13HMF) power engineering steel was studied through different experimental and analytical approaches. The specimens machined from the as-received pipe were subjected to loading simultaneously monitored using digital image correlation (DIC) technique. analysed microstructural observations fracture surfaces further described as a function parameter D measure ϕ . combination such parameters’ evolution with number cycles failure DIC technique enables determination separate stages development. It found that dynamics could be effectively exposed within first 100 cycles.