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20 1 2010 10
Vol.20 Special 1 The Chinese Journal of Nonferrous Metals Oct. 2010
1004-0609(2010)S1-s0565-05
Ti-5.8Al-3Mo-1Cr-2Sn-2Zr-1V-0.15Si
( 110016)
SEM TEM
Ti-5.8Al-3Mo-1Cr-2Sn-2Zr-1V-0.15Si β
β α α α
α β
ααβ
TF 804.3 A
Effect of cooling rate on microstructure and properties of
Ti-5.8Al-3Mo-1Cr-2Sn-2Zr-1V-0.15Si alloy
SONG Miao, MA Ying-jie, WU Jun, LI Yu-lan, LIU Yu-yin, LEI Jia-feng
(Titanium Alloys Division, Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, China)
Abstract: The effect of cooling rate after solution treatment on the microstructure and mechanical properties of
Ti-5.8Al-3Mo-1Cr-2Sn-2Zr-1V-0.15Si alloy was studied by the OM, SEM and TEM. It is found that as the cooling rate
decreases, the β stabilizers increase and the αstabilizers decrease in the β phase, thus the precipitation of second αphase
becomes difficult during sequent aging, and the precipitated second α phase becomes small. At the same time, the
lamellar of primary αbecomes coarse, and the amount of β phase decreases. The effect of cooling rate on the mechanical
properties lies in the change of the amount and pattern of primary αphase, secondary αphase and βphase.
Key words: titanium alloy; microstructure; cooling rate; tensile property
10.475.38β0.51
[1]
(αβ)
Ti-6Al-4V(β-ELI)Ti-6-
22-22S[2−3]
(α+β)
Ti-5.8Al-3Mo-1Cr-2Sn-2Zr-1V-0.1
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