Title:
PREPARATION METHOD FOR ULTRAHIGH-SPHERICITY NANO YTTRIUM OXIDE DISPERSION STRENGTHENED TITANIUM ALLOY POWDER
Document Type and Number:
WIPO Patent Application WO/2023/087952
Kind Code:
A1
Abstract:
A preparation method for an ultrahigh-sphericity nano yttrium oxide dispersion strengthened titanium alloy powder. The method comprises the following steps: S1, compounding materials at 0.1-1.0 wt% of Y, 5.5-6.8 wt% of Al, 3.5-4.5 wt% of V and the balance being Ti, preparing an alloy block ingot by means of vacuum melting, and forging and rolling same; S2, machining the alloy block ingot into an alloy bar meeting the size requirement of a plasma rotating electrode method; S3, preparing a titanium alloy powder by means of a plasma rotating electrode method; the preparation parameters being as follows: the rotating speed of the alloy bar is 25,000-35,000 r/min, the feeding speed of the alloy bar is 1.0-2.0 mm/s, the power of a plasma gun is 60-140 kw, the temperature of an inert gas in an atomizing chamber is controlled to be 200-400ºC during the powder preparation process, and the oxygen content in the atomizing chamber is ensured to be not more than 100 ppm.
Inventors:
XU YI (CN)
ZHANG CHENGYANG (CN)
HE SIYI (CN)
CHEN HUI (CN)
ZHANG CHENGYANG (CN)
HE SIYI (CN)
CHEN HUI (CN)
Application Number:
PCT/CN2022/122964
Publication Date:
May 25, 2023
Filing Date:
September 30, 2022
Export Citation:
Assignee:
UNIV SOUTHWEST JIAOTONG (CN)
International Classes:
B22F9/14; B22F1/065; B22F1/07; B82Y30/00; C22C14/00
Foreign References:
| CN114178538A | 2022-03-15 | |||
| CN106853535A | 2017-06-16 | |||
| KR20200019387A | 2020-02-24 | |||
| CN105689730A | 2016-06-22 | |||
| CN110625112A | 2019-12-31 | |||
| CN113059172A | 2021-07-02 |
Attorney, Agent or Firm:
CHENGDU ZHONG HENG ZHI HE PATENT AGENT FIRM (GENERAL PARTNERSHIP) (CN)
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