77 KにおけるTi-Mo合金中の非熱的ω相の生成と成長の電子顕微鏡観察
1999 年 63 巻 6 号 p. 806-807
詳細
1999 年 63 巻 6 号 p. 806-807
It is known that ω-phase crystals in β-Ti alloys are formed by quenching, aging and stressing. It has also been predicted that athermal ω-phase crystals are formed by cooling from the negative temperature dependence of electrical resistivity in the alloys at low temperature. In order to clarify the formation of athermal ω-phase crystals formed by cooling, in-situ dark field image observations of an as-quenched Ti-15 mass%Mo alloy were carried out from room temperature to 77 K. In a specimen cooled to 77 K without electron irradiation, the formation of athermal ω-phase crystals was clearly observed, but when irradiated with electron beam the crystals were annihilated.
