Influence of Nb on microstructure and mechanical properties of Ti-Sn ultrafine eutectic alloy
In this study, A series of the high strength (T 82 Sn 18 ) 100-x Nb x (x=0, 1, 3, 5, and 9 at%) ultrafine eutectic alloys with large plasticity are developed by suction casting method. The Ti 82 Sn 18 binary eutectic alloy consists of a mixture of a hcp Ti 3 Sn and a α -Ti phases having the plate-li...
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Veröffentlicht in: | Metals and materials international 2017, 23(1), , pp.20-25 |
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Format: | Artikel |
Sprache: | eng |
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Zusammenfassung: | In this study, A series of the high strength (T
82
Sn
18
)
100-x
Nb
x
(x=0, 1, 3, 5, and 9 at%) ultrafine eutectic alloys with large plasticity are developed by suction casting method. The Ti
82
Sn
18
binary eutectic alloy consists of a mixture of a hcp Ti
3
Sn and a
α
-Ti phases having the plate-like lamellar type duplex structure with micro scaled eutectic colony. From the (T
82
Sn
18
)
97
Nb
3
, the alloy display structural heterogeneous distribution of ultrafine-scaled phases composed of
β
-Ti(Nb) solid solution surrounded by alternating plate-like shaped Ti
3
Sn and
α
-Ti phases. With increasing Nb content, the volume fraction of
β
-Ti is continuously increased, which induced improving mechanical properties both strength and plasticity. Especially, (Ti
82
Sn
18
)
91
Nb
9
alloy has the outstanding combination of the high strength (
σ
y
≈1.1 GPa) and large plasticity (
ε
p
≈36%) at room temperature. |
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ISSN: | 1598-9623 2005-4149 |
DOI: | 10.1007/s12540-017-6263-2 |