Effect of Aging Treatment on the Fatigue Crack Propagation of 18% Ni Maraging Steel
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概要
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In this study, the effect of aging treatment on the fatigue crack propagation of 18% Ni maraging steel sheets was investigated. Main results are summarized as follows. An exponential relation holds between the crack propagation rate and the stress intensity factor range for the specimens heat-treated under each condition, and no significant difference in the values m and C is observed among the specimens heat-treated under various conditions involving the solution annealing. This means that aging treatment has no favourable effect to retard the fatigue crack propagation, even if the static strength of this steel is exceedingly elevated by the aging treatment. Although the fatigue strength is increased by aging treatment, the degree of increase depends upon the loading level and the aging condition. Namely, the underaging treatment is more preferable when this material is subjected to high cycle fatigue load.
- 一般社団法人日本機械学会の論文
著者
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TANAKA Tsuneshichi
Faculty of Engineering, Ritsumeikan University
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Sakai Tatsuo
Faculty Of Pharmaceutical Sciences Toyama Medical & Pharmaceutical University
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FUJITANI Keizo
Faculty of Science and Engineering, Ritsumeikan University
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