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ct20 钛合金管材的冷弯成型 - 中国有色金属学报
20 1 2010 10
Vol.20 Special 1 The Chinese Journal of Nonferrous Metals Oct. 2010
1004-0609(2010)S1-s0743-05
CT20
( 710016)
CT20
CT20 A
Cold bending of CT20 titanium alloy tubes
LIU Wei, DU Yu , LU Ya-feng, MAO Xiao-nan, QI Yun-lian, GUO Ping
(Northwest Institute for Nonferrous Metal Research, Xi’an 710016, China)
Abstract: The cold bending process of CT20 titanium alloy tubes used for spaceflight engine tube to carry liquid
hydrogen is complex. Numerical control bending tube machine was used to bend the tubes of different original conditions,
and the reason for rupture and surface defect of the bending tubes was studied by SEM and TEM. The results show that
surface processing has a limited influence on tubes bending, and tubes with isometric microstructure can be bended while
those with lath microstructure cannot be bended. The bending tubes with good quality can be processed by adjusting the
die and parameter of numerical control bending tube machine.
Key words: CT20 titanium alloy; tube; microstructure; cold bending
[1] CT20
(Ti-Al-Zr-Mo ) [3−8]
α600 MPa
16%20 K CT20 (
10% )
[2]
CT20
1
1.1
( ) CT20 d35 mm1.5 mm
029E-mail neuanakin@126.com
s744 2010 10
1 h1 h
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