Effect of Addition of β-Phase Stabilizing Elements (Nb, Mo and V) on Plastic Behaviour of Ti_3Al Single Crystals with the D0_<19> Structure
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概要
- 論文の詳細を見る
Effect of the addition of Nb, Mo and V which are thought to stabilize the bcc structure on plastic behaviour of Ti<SUB>3</SUB>Al based single crystals was investigated in the range from room temperature to 900°C. {1010}<1210> prism, (0001)<1210> basal and {1121}<1126> pyramidal slip systems were operative at all temperatures depending on crystal orientation. Activation of the prism slip was most favourable among the three slip systems, while the pyramidal slip was observed only at limited orientations near the [0001] corner because of high CRSS. The CRSS for the prism and basal slips decreased monotonously as the temperature rose, while that for the pyramidal slip increased rapidly with rising temperature and reached a peak. Addition of V and Mo led to violation of Schmids law for the prism slip, while the CRSS in binary Ti<SUB>3</SUB>Al and ternary Ti<SUB>3</SUB>Al-Nb crystals exhibited no orientation dependence. Anomalous strengthening and peak temperature in the CRSS-temperature curves for the pyramidal slip were very sensitive to the added elements in Ti<SUB>3</SUB>Al. The addition of V, Mo and Nb caused more effectively anomalous strengthening in this order.
- 社団法人 日本鉄鋼協会の論文
- 1995-07-15
著者
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Umakoshi Yukichi
Department Of Materials Science And Engineering & Frontier Research Center Graduate School Of En
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Nakano Takayoshi
Department Of Materials Science And Engineering & Frontier Research Center Graduate School Of En
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YANAGISAWA Eiichi
Department of Materials Science and Engineering, Faculty of Engineering, Osaka University
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Yanagisawa Eiichi
Department Of Materials Science And Engineering Faculty Of Engineering Osaka University
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UMAKOSHI Yukichi
Department of Materials Science and Engineering, Faculty of Engineering, Osaka University
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