MICROSTRUCTURE OF AS-MELT-QUENCHED Ti-Si-Nd ALLOY

Abstract

Abstract: Rapid liquid quenching was accomplished by using an arc-melting piston and anvil apparatus.A small amount of the rare earth element Nd in melt quenched Ti80Si2o alloy promotes eutectic precipitation of β-Ti and Ti5Si3.An orientation relationship of the Ti5Si3 and the β-Ti phase is <2113>∥<001>β-Ti,(0110)∥(110)β-Ti.The alloy forming heat of the Ti5Si3 is more negative than that of the β-Ti phase and the Ti5Si3 precipitates first.

Key words: melt-quenched Ti alloy, Nd, microstructure

LI Geping;LIU Yuyin;LI Dong;HU Zhuangqi(Institute of Metal Research,Chinese Academy of Sciences,Shenyang China Manuscript received 19 October 1994). MICROSTRUCTURE OF AS-MELT-QUENCHED Ti-Si-Nd ALLOY[J]. Acta Metallurgica Sinica (English Letters), 1995, 8(2): 84-87.

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MICROSTRUCTURE OF AS-MELT-QUENCHED Ti-Si-Nd ALLOY

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