OS2206 純チタンの水素脆化感受状態,水素量,ひずみ速度,温度の影響(OS22-3 水素と強度,OS-22 水素環境の材料強度特性への影響)

概要

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Hydrogen effects of pure titanium have been investigated in order to clarify a main factor causing the hydrogen embrittlement. Though a lot of studies reported that the main factor of hydrogen embrittlement of pure titanium was hydride, there is no study to evaluate using specimen including dissolved hydrogen content as much as the content of hydride. In the present study, hydrogen-charged titanium specimens including same hydrogen content as hydride or dissolved hydrogen are prepared by heat treatment. These specimens are tested under various hydrogen contents, strain rates and temperatures. As a result, not only hydride but also dissolved hydrogen affects mechanical properties such as tensile stremgth and fracture strain of pure titanium, that is, dissolved hydrogen also causes hydrogen embrittlement.
一般社団法人日本機械学会の論文
2011-07-16