Fatigue Strength of Laser-processed Hot Work Tool Steel
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概要
- 論文の詳細を見る
Hot work tool steel with an application in the die-casing industry was chosen as the test material. Most of the failure of dies depends on the heat check due to cyclic thermal stress. So, the present work aims to find a repair method of the failed tool. The microstructure of the Nd:YAG laser-processed material is formed by dendritic structure hardened into martensite. The steel shows secondary hardening by tempering and fatigue softening by cyclic loading even at room temperature. The rotating bending fatigue strength can be recovered to almost initial value by heat treatment at secondary hardening temperature after laser-processing. As the result, it is concluded that the laser processing is suitable for the repair of heat check.
- 社団法人 日本鉄鋼協会の論文
- 2003-01-15
著者
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Hanaki Satoshi
Graduate School Of Engineering Himeji Institute Of Technology
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Sunada H
Faculty Of Engineering Himeji Institute Of Technology
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SUN Yahong
Graduate School of Engineering, Himeji Institute of Technology
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UCHIDA Hitoshi
Graduate School of Engineering, Himeji Institute of Technology
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SUNADA Hisakichi
Graduate School of Engineering, Himeji Institute of Technology
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TSUJII Nobuhiro
Technical Research Laboratories, Sanyo Special Steel Co.
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Sun Yahong
Himeji Institute Of Technology
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Tsujii Nobuhiro
Technical Research Laboratories Sanyo Special Steel Co.
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Uchida Hitoshi
Graduate School Of Engineering Himeji Institute Of Technology
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