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Microstructure and Hardness of High Temperature Alloy Ti-1100 Melted in CaO Crucible

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Abstract:

A high temperature alloy Ti-1100 was produced by vacuum induction melting technology. The effects of casting modulus on the microstructure and hardness of the cast alloys were determined and the results were presented and briefly discussed. Results demonstrate that the microstructure of cast alloys with different modulus are all widmanstatten structure with basket weave features where individual α-laths are separated by a thin layer of retained prior β phase. The greater the modulus, the larger the prior β grain size and α-laths spacing, and the less the Vickers hardness. The roles of the casting modulus governing the microstructures and hardness of the alloys were also discussed.

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Periodical:

Materials Science Forum (Volume 788)

Pages:

158-163

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.788.158

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Online since:

April 2014

Authors:

Bin Guo Fu, Hong Wei Wang, Chun Ming Zou, Pan Ma, Zun Jie Wei*

Keywords:

CaO Crucible, Hardness, Microstructure, Modulus, Ti-1100 Alloy

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© 2014 Trans Tech Publications Ltd. All Rights Reserved

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