Phase Stability and Mechanical Properties of Ti-Cr-Sn-Zr Alloys Containing a Large Amount of Zr

Yonosuke Murayama; Erdnechuluun Enkhjavkhlan; Akihiko Chiba

doi:10.4028/www.scientific.net/MSF.879.1344

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HomeMaterials Science ForumMaterials Science Forum Vol. 879Phase Stability and Mechanical Properties of...

Phase Stability and Mechanical Properties of Ti-Cr-Sn-Zr Alloys Containing a Large Amount of Zr

Abstract:

The Young’s modulus of Ti-Cr-Sn-Zr alloy varies with the composition of Cr, Sn and Zr, in which the elements act as β stabilizers. Some Ti-Cr-Sn-Zr alloys show very low Young’s modulus under 50GPa. The amount of Zr in alloys with very low Young's modulus increases with the decrease of Cr. We investigated the Young’s modulus and deformation behavior of Ti-xCr-Sn-Zr (x=0~1mass%) alloys containing a large amount of Zr. The quenched microstructure of Ti-Cr-Sn-Zr alloys changes from martensitic structure to β single-phase structure if the amounts of β stabilized elements are increased. The Ti-Cr-Sn-Zr alloys with compositions close to the transitional composition of microstructure from martensite to β phase show minimum Young’s modulus. The clear microstructural transition disappears and the minimum Young’s modulus increases if the amount of Cr becomes too small. In Ti-Cr-Sn-Zr alloys containing a large amount of Zr, Young’s modulus depends on β phase that is intermingled with martensite.

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Periodical:

Materials Science Forum (Volume 879)

Pages:

1344-1349

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.879.1344

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Online since:

November 2016

Authors:

Yonosuke Murayama*, Erdnechuluun Enkhjavkhlan, Akihiko Chiba

Keywords:

Martensite, Mechanical Properties, Meta-Stable β Titanium, Ti-Cr-Sn-Zr Alloy, Young’s Modulus

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