|Influence of equiatomic Zr/Nb substitution on superelastic behavior of Ti-Nb-Zr alloy|
|J. Y. Zhang; F. Sun; Y. L. Hao; N. Gozdecki; E. Lebrun; P. Vermaut; R. Portier; T. Gloriant; P. Laheurte; F. Prima
|Source Publication||Materials Science and Engineering a-Structural Materials Properties Microstructure and Processing
|Abstract||Based on a binary Ti-26Nb (at%) alloy, Ti-(26-z)at% Nb-(z)at% Zr (z=2, 6, 8 and 10) alloys via equiatomic substitution of Nb by Zr are formulated. Influence of equiatomic Zr/Nb substitution on microstructure evolution, mechanical properties and deformation mechanism of the superelastic Ti-Nb-Zr alloy are investigated. Experimental results show that the phase constitution is single beta phase or beta/omega(ath) phase at 0 < Zr/Nb < 0.35 since the measured Ms temperature is maintained at around 250 K. The two-phase microstructure consist of alpha '' martensite and beta phase is obtained at Zr/Nb ratio > 0.4 due to the attenuation of beta stabilizing effect of Zr, which is related closely to the Nb content in ternary Ti-Nb-Zr alloys. The mechanism of the superelastic behavior alters gradually from reversible beta/alpha '' martensitic transformation to rearrangement of pre-existing alpha '' martensites as a function of Zr/Nb ratio increase. At Zr/Nb=0.3, the alloy of corresponding composition exhibits the best superelasticity and combined mechanical performance. A coefficient of Delta T (Delta T=T-beta-Ms) is proposed to understand the experimental results by evaluating the beta instability of Ti-Nb-Zr alloys. (c) 2012 Elsevier B.V. All rights reserved.|
; sun, fan
; gozdecki, nicolas
; lebrun, emilie
; vermaut, philippe
; portier, richard
; prima, frederic] enscp, umr 7045, grp met struct, lab physicochim surfaces, f-75231 paris 05, france. [hao, yulin] chinese acad sci, inst met res, shenyang natl lab mat sci, shenyang 110016, peoples r china. [gloriant, thierry] umr cnrs 6226 sci chim rennes chim met, inst sci chim rennes, f-35043 rennes, france. [laheurte, pascal] univ metz, lab umr cnrs 7239 lem3, metz, france.
; prima, f (reprint author), enscp, umr 7045, grp met struct, lab physicochim surfaces, 11 rue pierre & marie curie, f-75231 paris 05, france.
Metastable Beta Titanium Alloys
J. Y. Zhang,F. Sun,Y. L. Hao,et al. Influence of equiatomic Zr/Nb substitution on superelastic behavior of Ti-Nb-Zr alloy[J]. Materials Science and Engineering a-Structural Materials Properties Microstructure and Processing,2013,563:78-85.
J. Y. Zhang.,F. Sun.,Y. L. Hao.,N. Gozdecki.,E. Lebrun.,...&F. Prima.(2013).Influence of equiatomic Zr/Nb substitution on superelastic behavior of Ti-Nb-Zr alloy.Materials Science and Engineering a-Structural Materials Properties Microstructure and Processing,563,78-85.
J. Y. Zhang,et al."Influence of equiatomic Zr/Nb substitution on superelastic behavior of Ti-Nb-Zr alloy".Materials Science and Engineering a-Structural Materials Properties Microstructure and Processing 563(2013):78-85.
|Files in This Item:||
||There are no files associated with this item.
Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.