GSD-21 A FUNDAMENTAL STUDY ON THE SURFACE DURABILITY OF AUSTEMPERED DUCTILE IRON (ADI) GEARS IN LONG LIFE REGION(GEAR STRENGTH AND DURABILITY, INCLUDING GEAR MATERIALS AND HEAT TREATMENT TECHNIQUES)
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概要
- 論文の詳細を見る
Austempered Ductile Iron (ADI), which has much the same strength and toughness as usual steels, has been developed. ADI has many advantages in mechanical properties and manufacturing, for example, weight reduction due to smaller density than that of steel, good properties of vibration and noise, low cost in machining and heat treatment of blanks due to near-net-shape casting. It has been reported that ADI can be sufficiently applied as a medium hardness gear material. Recently, it is reported that S-N curve for the bending fatigue strength of ADI is different from another material such as steel. Then the fatigue phenomenon in long life region over 10,000,000 cycles is discussed. However, the surface durability in long life region has not been clarified until now. In this paper, surface durability of ADI rollers in long life region is investigated using a disk machine which simulates the rolling and sliding action of gears. Furthermore, fatigue limit for surface durability of ADI is estimated by observations of crack initiation and propagation.
- 2009-05-13
著者
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Kurokawa Syuhei
Department of Mechanical Engineering, Graduate School of Engineering,Kyushu University
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Goka Masahito
Sintokogio Ltd.
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Ariura Yasutsune
Department Of Mechanical Engineering Kyushu University
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Ariura Yasutsune
Department Of Intelligent Machinery And Systems Kyushu University
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ISHIMARU Ryohei
Department of Mechanical Engineering, Kurume National College of Technology
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MATSUKAWA Yoji
Department of Mechanical Engineering, Kyushu University
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Ishimaru Ryohei
Department Of Mechanical Engineering Kurume National College Of Technology
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Matsukawa Yoji
Department Of Mechanical Engineering Kyushu University
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Matsukawa Yoji
Department Of Mechanical Engineering Graduate School Kyushu University
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Kurokawa Syuhei
Department Of Mechanical Engineering Kyushu University
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Kurokawa Syuhei
Department Of Intelligent Machinery And Systems Kyushu University
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