Zobrazeno 1 - 10
of 135
pro vyhledávání: '"Ryuichiro Ebara"'
Publikováno v:
Key Engineering Materials. 741:57-62
Many studies have been conducted to characterize the fracture toughness of structural steels and their welded joints. However, most studies focus on newly developed steels, and the number of studies on the fracture toughness of long-term used steels
Publikováno v:
Case Studies in Structural Engineering. 6:103-114
In this study, the material strength of a carbon steel (JIS SS400), which has been used for the penstock of a hydroelectric power plant for about 50 years, is examined. A series of data were obtained and analyzed by measuring the chemical composition
Autor:
Ryuichiro Ebara
Publikováno v:
Solid State Phenomena. 258:269-272
This paper presents grain size effect on low cycle fatigue behavior of high strength maraging steel with gain size of 20,60 and 100μm and Ti-6Al-4V alloy with grain size of 0.5,1.4 and 5.1μm. Low cycle fatigue strength of the maraging steel depends
Autor:
Ryuichiro Ebara
Publikováno v:
Procedia Engineering. 160:21-28
Major variables which cause internal fatigue crack initiation are nonmetallic inclusions in high strength steels, surface roughness and notch in structural components and corrosive environments. This paper focused on the effect of stress concentratio
Autor:
Ryuichiro Ebara
Publikováno v:
Procedia Structural Integrity. 2:517-524
Corrosion fatigue strength of stainless steels is controlled by tangled interaction among environmental, mechanical and metallurgical factors. In order to estimate corrosion fatigue strength it is indispensable to understand the role of an each influ
Publikováno v:
Advanced Materials Research. :674-678
In this paper the emphasis is focused upon nitriding effect on corrosion fatigue strength of Cr-Mo low alloy steel in 1% HCl aqueous solution.Corrosion fatigue strength enhancement of Cr-Mo low alloy steel by nitriding is discussed on the basis of th
Publikováno v:
Engineering Failure Analysis. 33:29-36
This paper presents the sulfuric acid dew point corrosion found on waste heat boiler tube for a copper smelting furnace. Macroscopic and microscopic observation results for the failed boiler tubes are shown. Then the analyzed results by X-ray fluores
Autor:
Ryuichiro Ebara, Yuya Miyoshi
Publikováno v:
Key Engineering Materials. :421-424
Ultrasonic Corrosion Fatigue Tests were Conducted for SUS329J3L in Air and 3%NaCl Aqueous Solution. Reduction of Giga-Cycle Corrosion Fatigue Strength was 12.5%. Corrosion Pit was Observed on Corrosion Fatigue Crack Initiation Area. Striation was Pre
Autor:
Masahide Iwamoto, Shinichi Hamaya, Keisuke Takeda, Atsushi Ogura, Ryuichiro Ebara, Hideaki Fujimoto
Publikováno v:
Journal of the Society of Materials Science, Japan. 60:1009-1014
Microfractographic features in fracture surfaces for tensile, fatigue, impact, three point bending specimens of cold forging die steels with Rockwell C scale hardness number of 52 to 68 are presented. The emphasis is placed upon the stretched zone fo
Publikováno v:
Key Engineering Materials. :749-752
Giga-cycle fatigue behavior of notched specimens with stress concentration factor, Kt of 1.5, 2.0 and 2.5 for 0.65 mass% carbon matrix high speed steel, YXR3 with Rockwell C scale hardness number of 60.7 is investigated. The higher the stress concent