M&M材料力学カンファレンス
Online ISSN : 2424-2845
セッションID: OS0117
会議情報
OS0117 固溶強化型チタン合金の力学特性に及ぼす添加元素の効果
池田 賢一赤田 匠波多 聰中島 英治國枝 知徳藤井 秀樹
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会議録・要旨集 フリー

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In order to clarify the effect of additive elements on mechanical properties in solid solution strengthened titanium alloy, pure titanium (CP-Ti), Ti-1 mass% Al (Ti-1Al) and Ti-1 mass% Cu (Ti-lCu) alloys were prepared. The tensile tests at various temperature and the microstructure observation were carried out. In this study, it was found that the tensile strength and the 0.2% proof stress of Ti-1Al and Ti-1Cu were higher than those of CP-Ti and the total elongation of Ti-iCu was higher than that of Ti-1Al. The 0.2% proof stress of Ti-1Cu from 100℃ to 500℃ was highest among them. A lot of deformation twins were observed in CP-Ti and Ti-1Cu deformed at room temperature. From these results, the increase of the tensile strength and the total elongation are considered to be due to the number of twin in Ti-1Cu.
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