Ryuichiro Ebara

TL;DR: In this article, the role of corrosion pit in the corrosion fatigue crack initiation process of martensitic, ferritic, austenitic, duplex and precipitation-hardening stainless steels is summarized.

TL;DR: In this article, the initiation and growth of corrosion pits in the corrosion fatigue crack initiation process is discussed, and a recent investigation of the early stages of corrosion pit initiation by use of electrochemical noise measurement is demonstrated.

TL;DR: In this paper, an important role of micro-fractography is stressed in engineering failure analysis for hot forging die failures for automotive components and their countermeasures are presented with influencing variables such as die materials, die design, die manufacturing and forging operations.

TL;DR: In this paper, a review of the fatigue crack initiation and propagation behavior of forging die steels is presented, mainly on the basis of the author's experimental results, and the emphasis is focused upon the recently obtained experimental results on low cycle, high cycle, and giga cycle fatigue behavior of cold forging dies.

TL;DR: In this article, the sulfuric acid dew point corrosion was found on a waste heat boiler tube for a copper smelting furnace, and the analysis results by X-ray fluorescence, Xray diffraction and EPMA were demonstrated.