MATERIALS TRANSACTIONS
Online ISSN : 1347-5320
Print ISSN : 1345-9678
Effect of Al Addition on Superelastic Properties of Aged Ti–Nb–Zr–Al Quaternary Alloys
Hiroyuki TadaTokujiro YamamotoXinmin WangHidemi Kato
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2012 Volume 53 Issue 11 Pages 1981-1985

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Abstract

The effect of Al content on superelastic properties of Ti75−xNb15Zr10Alx (x = 0–6 at%) quaternary β Ti alloys were investigated. And the effects of baking for coating or plating on superelastic properties were also studied. The alloys containing 3 and 4 at% of Al clearly exhibited superelastic behavior after aging at 453 and 553 K, which are appropriate temperatures for industrial coating and plating, respectively. Ti72Nb15Zr10Al3 alloy exhibited the largest recovery strain of 2.5% due to superelastic behavior even after industrial coating and plating. In this quaternary alloy system, strange non-monotonical change of superelastic behavior as a function of Al content was also found.

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© 2012 The Japan Institute of Metals and Materials
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