工業用純チタニウムの高温動クリープおよび高温疲労

概要

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Dynamic creep and fatigue tests were conducted with a commercially pure titanium at room temperature and at elevated temperatures of 200℃ and 300℃. The material showed some interesting behavior, that is, it did not creep at 300℃ whereas marked creep phenomenon was noted at room temperature. At the intermediate temperature of 200℃, remarkable creep phenomenon was observed i the same manner as at room temperature during few hours after loading, and then a transition to a very small rate of creep occurred. The transition appeared earlier under dynamic stress than under static stress. These results were discussed from the standpoint of the analysis to be used for the prediction of dynamic creep strength from static creep data, which was established by the authors for the case of a low carbon steel and a 13 Cr steel. It was proved that this method of prediction can be used also in this case of titanium, provided some modification is made in regard to the peculiar phenomena of this material.
1960-07-15