WO2016035824A1 - PROCÉDÉ DE DÉSOXYDATION D'UN ALLIAGE Ti-Al - Google Patents

PROCÉDÉ DE DÉSOXYDATION D'UN ALLIAGE Ti-Al Download PDF

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Publication number
WO2016035824A1
WO2016035824A1 PCT/JP2015/074970 JP2015074970W WO2016035824A1 WO 2016035824 A1 WO2016035824 A1 WO 2016035824A1 JP 2015074970 W JP2015074970 W JP 2015074970W WO 2016035824 A1 WO2016035824 A1 WO 2016035824A1
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Prior art keywords
alloy
mass
melting
flux
content
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PCT/JP2015/074970
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English (en)
Japanese (ja)
Inventor
史晃 工藤
大介 松若
哲史 出浦
坂本　浩一
大喜 高橋
石田　斉
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株式会社神戸製鋼所
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Priority claimed from JP2015131029A external-priority patent/JP6392179B2/ja
Application filed by 株式会社神戸製鋼所 filed Critical 株式会社神戸製鋼所
Priority to AU2015312896A priority Critical patent/AU2015312896B2/en
Priority to EP15838357.0A priority patent/EP3190196B1/fr
Priority to RU2017110549A priority patent/RU2673589C2/ru
Priority to US15/508,384 priority patent/US20170283906A1/en
Priority to CN201580046835.3A priority patent/CN106661670B/zh
Publication of WO2016035824A1 publication Critical patent/WO2016035824A1/fr
Priority to ZA2017/01496A priority patent/ZA201701496B/en

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    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
    • C22B9/00—General processes of refining or remelting of metals; Apparatus for electroslag or arc remelting of metals
    • C22B9/04—Refining by applying a vacuum
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
    • C22B9/00—General processes of refining or remelting of metals; Apparatus for electroslag or arc remelting of metals
    • C22B9/10—General processes of refining or remelting of metals; Apparatus for electroslag or arc remelting of metals with refining or fluxing agents; Use of materials therefor, e.g. slagging or scorifying agents
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
    • C22B9/00—General processes of refining or remelting of metals; Apparatus for electroslag or arc remelting of metals
    • C22B9/16—Remelting metals
    • C22B9/20—Arc remelting
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C1/00—Making non-ferrous alloys
    • C22C1/02—Making non-ferrous alloys by melting
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C14/00—Alloys based on titanium
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C21/00—Alloys based on aluminium

Definitions

  • the present invention relates to a method for deoxidizing a Ti—Al based alloy that removes oxygen from a Ti—Al based alloy made using an alloy material comprising a titanium material and an aluminum material and containing a total of 0.1 mass% or more of oxygen. It is about.
  • VAR vacuum arc melting
  • EB electron beam melting
  • PAM plasma arc melting
  • VIM vacuum induction melting
  • CCIM water-cooled copper induction melting
  • melting methods such as VAR, EB, and VIM are melting methods in which an alloy is melted in a vacuum atmosphere.
  • VAR atomic layer melting
  • EB atomic layer melting
  • VIM vacuum-vapor melting
  • Ti—Al alloy having a low oxygen content it is effective to produce a Ti—Al alloy using a high quality titanium material having a low oxygen content.
  • Titanium materials are expensive and have a tendency to soar in recent years, so the oxygen content is higher than high-grade titanium materials, but cheap sponge titanium, scrap raw materials, rutile ore (TiO 2 ), etc.
  • TiO 2 rutile ore
  • Ti is an active metal and has a very strong binding force with impurities, especially oxygen, present in the melting atmosphere, measures have been conventionally taken to reduce oxygen taken from the outside during melting and prevent contamination. It was. However, it is not easy to remove oxygen once dissolved in Ti, and the efforts themselves are few at present, but there are proposals as shown below as prior art.
  • Patent Document 1 discloses a method for producing a low-oxygen Ti—Al-based alloy and an invention relating to a low-oxygen Ti—Al-based alloy.
  • paragraph [0013] describes “1 ⁇ 10 ⁇ 2 Torr than When Al is forcibly removed in a high vacuum atmosphere, the amount of oxygen in the molten metal is reduced accordingly, and the Al is forced from the molten metal having a composition containing more Al than the Al content of the final target composition. By removing this, it is possible to produce a Ti—Al-based alloy having the final target composition and at the same time reduce oxygen to 200 ppm or less. ”
  • the method for producing a low oxygen Ti—Al alloy described in Patent Document 1 uses a low oxygen Ti—Al alloy in a high vacuum atmosphere at a pressure lower than 1.33 Pa (1 ⁇ 10 ⁇ 2 Torr).
  • Such melting in a high vacuum atmosphere causes volatilization loss not only for the alloy element Al but also for Ti, which is an effective method for producing a low oxygen Ti—Al alloy.
  • this method can be said to be a method, it is necessary to add extra Ti and Al, and there is a concern about an increase in manufacturing cost.
  • Patent Document 2 discloses an invention relating to a low-oxygen Ti—Al-based alloy and a method for producing the same, and its paragraph [0010] states that “the present invention is made to solve the above-mentioned problems.
  • high-purity, low-oxygen Ti-Al alloy by deoxidizing with Ca, evaporating and removing excess Ca, and contamination-free uniform dissolution And an object thereof is to provide a manufacturing method thereof ”.
  • this method can be said to be an effective method for producing a low-oxygen Ti—Al-based alloy, it is a method that undergoes a plurality of steps of metal Ca addition dissolution, metal Ca removal, and melting for homogenization.
  • metal Ca addition dissolution since the metal Ca is dissolved in titanium, it is difficult to completely remove the residual Ca. Therefore, the manufacturing cost and the manufacturing time are increased, and the Ti—Al based alloy due to the residual Ca that cannot be completely removed. This is a method of concern for contamination and changes in various properties.
  • Patent Document 3 discloses an invention relating to a method for producing a TiAl-based alloy ingot, and paragraph [0017] describes that the oxygen content can be reduced in all regions of the ingot.
  • the claim 1 states that “the oxygen content of the Ti raw material is 800 ppm or less, the oxygen content of the Al raw material is 100 ppm or less, and when the other alloy components are Cr, V, Nb, the oxygen content thereof.
  • the method for producing an ingot of a TiAl-based alloy characterized in that when the amount is 2000 ppm or less and the other alloy component is Mn, its oxygen content is 3000 ppm or less.
  • the ingot manufacturing method of the TiAl-based alloy described in Patent Document 3 is an effective method that can reduce the oxygen content of the ingot, but this method is a high-quality low oxygen content.
  • This method is to obtain a TiAl-based alloy having a low oxygen content using a simple material, and is not a method using a low-grade Ti material having a relatively high oxygen content.
  • only a TiAl alloy having a low Al content of 30% by mass is described.
  • Patent Document 4 discloses an invention relating to a casting method of a titanium-aluminum alloy casting, in which sponge titanium as a raw material is melted, and aluminum as a raw material is added to the molten titanium. It is described that a titanium-aluminum alloy containing a fixed amount of titanium and aluminum is prepared, and in claim 2 and paragraph [0020], the oxygen content of the sponge titanium is 350 ppm or less, and In the examples, it is described that the oxygen content of titanium sponge is 0.03 wt%.
  • high-quality sponge titanium having an oxygen content of 350 ppm or less (corresponding to 0.035% by mass or less) is used as a raw material.
  • a high-grade material with a low oxygen content is used to obtain a cast titanium-aluminum alloy with a low oxygen content.
  • a low-grade titanium material with a relatively high oxygen content is used. Not a way. In the examples, only a titanium-aluminum alloy casting having a low Al content of 34% by mass is described.
  • the present invention has been made in order to solve the above-mentioned conventional problems.
  • a low-grade titanium material having a high oxygen content is used to form a Ti-Al alloy having a target composition and a low oxygen content with a high vacuum. It is an object of the present invention to provide a method for deoxidizing a Ti—Al based alloy that can be easily manufactured without using an atmosphere.
  • the Ti—Al-based alloy deoxidation method of the present invention contains 40 mass% or more of Al produced using an alloy material made of a titanium material and an aluminum material and containing 0.1 mass% or more of oxygen in total.
  • the Ti—Al-based alloy is melted and held by a melting method using a water-cooled copper container in an atmosphere of 1.33 Pa or higher, thereby reducing the oxygen content of the Ti—Al-based alloy. To do.
  • CaO—CaF 2 flux in which 35 to 95 mass% of calcium fluoride is mixed with calcium oxide.
  • the melting method using the water-cooled copper container is preferably any one of an arc melting method, a plasma arc melting method, and an induction melting method.
  • a low-quality and inexpensive titanium material having an oxygen content of 0.1 mass% or more is used, and the volatilization loss of Al and Ti is small (substantially)
  • a Ti—Al alloy having a target composition and a low oxygen content can be easily produced without a high vacuum atmosphere (without reduction).
  • the Ti content obtained by the deoxidation method of the Ti—Al based alloy of the present invention is 40% by mass or more and the Ti—Al based alloy having a small oxygen content is diluted with low oxygen titanium, the Al content is obtained. It is possible to manufacture a Ti—Al alloy having a low oxygen content of less than 40% by mass relatively easily and inexpensively.
  • the inventors use low-grade titanium materials containing a large amount of oxygen such as low-grade sponge titanium, scrap raw materials, and rutile ore (TiO 2 ), so that the volatilization loss of Al and Ti is small (substantially)
  • low-grade sponge titanium, scrap raw materials, and rutile ore (TiO 2 ) so that the volatilization loss of Al and Ti is small (substantially)
  • intensive studies were conducted.
  • the maximum amount of oxygen dissolved in the Ti-Al alloy is X. L. Li, R.R. Hillel, F.M. Teyssandier, S .; K. Choi, and F. J. et al. J. et al. Van. Loo, Acta Metall. Mater. , 40 ⁇ 11 ⁇ 3147-3157 (1992), it is assumed that the relation shown by the broken line in FIG. 5 is obtained. From this fact, the present inventors have focused on the fact that the Ti—Al alloy containing a high concentration of Al has a low solid solution oxygen concentration.
  • a Ti—Al alloy produced using a low-grade titanium material can be a water-cooled copper container even in a high vacuum atmosphere as long as it is a Ti—Al alloy containing 40% by mass or more of Al. It has been found that deoxidation reaction can proceed by dissolution using Al, Ti and Al volatilization loss is small (substantially without reduction), and low oxygen Ti-Al alloys with the target composition can be easily produced.
  • the present invention has been completed.
  • the Ti—Al-based alloy deoxidation method of the present invention contains 40 mass% or more of Al produced using an alloy material made of a titanium material and an aluminum material and containing 0.1 mass% or more of oxygen in total.
  • the Ti—Al-based alloy is melted and held in an atmosphere of 1.33 Pa or more by a melting method such as an arc melting method using a water-cooled copper container, a plasma arc melting method, an induction melting method, etc.
  • a melting method such as an arc melting method using a water-cooled copper container, a plasma arc melting method, an induction melting method, etc.
  • the oxygen content of the Al alloy is reduced, and as the titanium material, low-grade sponge titanium, scrap raw material, rutile ore (TiO 2 ), or the like is used.
  • the reason for using titanium materials with high oxygen content, such as low-grade sponge titanium, scrap raw materials, and rutile ore (TiO 2 ), for the production of Ti—Al alloys is because these titanium materials are inexpensive and easy to procure. It is.
  • the total oxygen content of the alloy material composed of these titanium material and aluminum material is set to 0.1 mass% or more if the total oxygen content in the alloy material is less than 0.1 mass%. This is because the content is small and deoxidation itself is not necessary.
  • the upper limit of the oxygen content is not specified, but the upper limit of the total content of oxygen actually contained in the alloy material is considered to be about 25.0% by mass.
  • the reason why the Al content of the Ti—Al based alloy produced using the alloy material made of the titanium material and the aluminum material is 40% by mass or more is that the Al content in the Ti—Al based alloy is 40% by mass. If it is above, even in an atmosphere of 1.33 Pa or higher, not in a high vacuum atmosphere, by a melting method such as an arc melting method, a plasma arc melting method, an induction melting method using a water-cooled copper container, Ti This is because the deoxidation reaction of the Al-based alloy proceeds. This deoxidation reaction is a phenomenon that occurs when the concentration of solid solution oxygen in a Ti—Al alloy having a high Al content decreases and supersaturated oxygen combines with Al to form Al 2 O 3 .
  • oxygen is discharged from the Ti—Al alloy in the form of Al 2 O 3 .
  • the deoxidation reaction proceeds at a temperature of approximately 1800 K or more at which the Ti—Al alloy is dissolved.
  • the upper limit of the Al content of a Ti—Al alloy produced using an alloy material such as a titanium material and an aluminum material is not particularly specified, but the preferable upper limit is 70% by mass, more preferably 60% by mass. %, More preferably 50% by mass.
  • Ti-Al alloys contain other alloy elements other than Al and impurities such as oxygen. Therefore, if the content of Al, which is an alloy element, increases too much, the proportion of Ti decreases and the Ti-Al alloy is called an alloy. become unable.
  • regulated it can be assumed that an actual upper limit is about 5.33 * 10 ⁇ 5 > Pa.
  • the minimum with preferable atmospheric pressure is 10 Pa, More preferably, it is 1.0 * 10 ⁇ 2 > Pa, From the ease of atmospheric control etc., it is especially preferable to set it as 1.0 * 10 ⁇ 4 > Pa or more.
  • a deoxidation reaction can be more reliably advanced by adding a flux as a deoxidation reaction accelerator before or during the dissolution of the Ti—Al alloy. Can do.
  • the flux added as a deoxidation reaction accelerator to the Ti—Al based alloy must be a low melting point flux having a melting point lower than the melting temperature of the Ti—Al based alloy.
  • the CaO—CaF 2 flux which is considered to be most preferable from the viewpoint of cost, was adopted.
  • the deoxidation reaction is further promoted by adding this CaO—CaF 2 flux to the Ti—Al based alloy.
  • the deoxidation reaction is not accelerated unless the melting point of the two fluxes is about 1800 K or less, which is the melting temperature of the Ti—Al alloy.
  • the reason why the deoxidation reaction is promoted by the addition of the flux is that Al 2 O 3 produced by the deoxidation reaction is absorbed in the flux, so that the activity of Al 2 O 3 is reduced, and the oxygen concentration is accordingly reduced. This is because of a decrease.
  • the Al deoxidation reaction can be represented by the following formula (1), and the reaction constant can be represented by the formula (2).
  • K in the formula (2) is constant, but since there is almost no change in aAl due to the deoxidation reaction, aAl in the following formula (2)
  • PO 2 (containing oxygen concentration) in formula (2) also decreases accordingly.
  • 2Al (inAl) + 3 / 2O 2 (inTi-Al) Al 2 O 3
  • K aAl 2 O 3 / (aAl 2 ⁇ PO 2 3/2 )
  • CaO-CaF 2 When the amount of calcium fluoride flux is less than 35% by weight, exceeds the CaO-CaF 2 flux melting point of 1800 K, a promoting effect of deoxidation reaction with CaO-CaF 2 flux added Can't get. On the other hand, when the blending amount of calcium fluoride exceeds 95% by mass, contamination with fluorine occurs. Therefore, in the present invention, CaO—CaF 2 flux in which 35 to 95 mass% of calcium fluoride is mixed with calcium oxide is added. A more preferable blending amount of calcium fluoride in the CaO—CaF 2 flux is 60 to 90% by mass. The addition amount of the CaO—CaF 2 flux is preferably 5 to 20% by mass with respect to the mass of the Ti—Al alloy.
  • the Ti—Al-based alloy deoxidation method of the present invention is a method of reducing the oxygen content by reducing the Al and Ti volatilization loss of the Ti—Al-based alloy (without substantially reducing it). Although demonstrated, the fall rate of content of Al and Ti which can be accept
  • FIG. 1 shows the relationship between the Al concentration (Al content) in the Ti—Al-based alloy after melting and holding using a 100 kW plasma arc furnace and the oxygen concentration (oxygen content) after melting.
  • the oxygen content after dissolution of a Ti—Al alloy having an Al content of 10 to 30% by mass does not change around 0.8% by mass, but the Al content is 40% by mass or more. It can be seen that in the Ti—Al alloy, the oxygen content decreases after melting. From this result, it can be seen that when the Al content of the Ti—Al-based alloy is 40% by mass or more, the deoxidation reaction proceeds by dissolution.
  • the oxygen content in the Ti-Al alloy after melting is the case where the Al content is 40% by mass and the CaO-CaF 2 flux is added.
  • the oxygen content in the Ti—Al based alloy after melting and holding is about 540 ppm when no CaO—CaF 2 flux is added, and the oxygen content exceeds 10 mass% using titanium oxide as a raw material. Even with such a material, the deoxidation effect was considerably exhibited.
  • the oxygen content in the Ti—Al based alloy was about 330 ppm, and it was confirmed that the deoxidation effect was further exhibited by adding the flux.
  • the oxygen content after melting decreases from the point where the Al content exceeds 40% by mass, as in the case where the plasma arc melting method is adopted. From this result, it can be seen that in the case of the induction melting method, as in the plasma arc melting method, the deoxidation reaction proceeds by dissolution when the Al content of the Ti—Al-based alloy is 40% by mass or more.
  • the Al content is any of 40 mass%, 48 mass%, and 59 mass%. Even in the case, it can be seen that deoxidation is further promoted as compared with the case where the CaO—CaF 2 flux is not added.
  • FIG. 2 it can be seen that when CaO—CaF 2 flux containing 60 to 90% by mass of calcium fluoride in calcium oxide is added, the most remarkable deoxidation reaction promoting effect is obtained. Even when blended in an amount of at least%, there is a significant deoxidation reaction promoting effect. From this test result, it can be seen that a deoxidation effect can be obtained by adding CaO—CaF 2 flux containing 35 to 95% by mass of calcium fluoride to calcium oxide. According to FIG. 2, it can be seen that deoxidation is not promoted when CaO—CaF 2 flux containing 30% by mass of calcium fluoride in calcium oxide is added. This is because the melting point of the CaO—CaF 2 flux is too high and is not melted.
  • FIG. 4 shows the relationship between the Al concentration (content) of the sample and the mass change rate of the sample before and after dissolution.
  • Al is not volatilized by melting using a 100 kW plasma arc furnace. From these results, it can be seen that in the melting using the plasma arc furnace, which is an example of the melting using the water-cooled copper container, the alloy elements Al and further Ti are not volatilized when the Ti—Al alloy is melted.
  • a Ti—Al based alloy having a low oxygen content can be manufactured at low cost, which is useful as a method for manufacturing a metal material for an aircraft or an automobile.

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  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
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Abstract

　L'invention concerne un alliage Ti-Al ayant une teneur en Al d'au moins 40% en masse, ledit alliage étant produit à l'aide d'un matériau d'alliage comprenant un matériau de titane et un matériau d'aluminium et ayant une teneur totale en oxygène d'au moins 0,1% en masse, est fondu et maintenu dans une atmosphère d'au moins 1,33 Pa selon un procédé de fusion incorporant un récipient en cuivre refroidi par de l'eau, ce qui permet de réduire la teneur en oxygène de l'alliage à base de Ti-Al.
PCT/JP2015/074970 2014-09-04 2015-09-02 PROCÉDÉ DE DÉSOXYDATION D'UN ALLIAGE Ti-Al WO2016035824A1 (fr)

Priority Applications (6)

Application Number Priority Date Filing Date Title
AU2015312896A AU2015312896B2 (en) 2014-09-04 2015-09-02 Method for deoxidizing Ti-Al alloy
EP15838357.0A EP3190196B1 (fr) 2014-09-04 2015-09-02 Procédé de désoxydation d'un alliage ti-al
RU2017110549A RU2673589C2 (ru) 2014-09-04 2015-09-02 СПОСОБ РАСКИСЛЕНИЯ СПЛАВА Ti-Al
US15/508,384 US20170283906A1 (en) 2014-09-04 2015-09-02 METHOD FOR DEOXIDIZING Ti-Al ALLOY
CN201580046835.3A CN106661670B (zh) 2014-09-04 2015-09-02 Ti-Al系合金的脱氧方法
ZA2017/01496A ZA201701496B (en) 2014-09-04 2017-02-28 Method for deoxidizing ti-al alloy

Applications Claiming Priority (10)

Application Number Priority Date Filing Date Title
JP2014-180432 2014-09-04
JP2014180432 2014-09-04
JP2014180431 2014-09-04
JP2014-180431 2014-09-04
JP2015-006764 2015-01-16
JP2015-006765 2015-01-16
JP2015006764 2015-01-16
JP2015006765 2015-01-16
JP2015-131029 2015-06-30
JP2015131029A JP6392179B2 (ja) 2014-09-04 2015-06-30 Ｔｉ−Ａｌ系合金の脱酸方法

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2018155658A1 (fr) 2017-02-23 2018-08-30 株式会社神戸製鋼所 Procédé de production d'alliage de ti-al
AU2015344310B2 (en) * 2014-11-04 2018-12-20 Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.) Method for deoxidizing Al-Nb-Ti alloy
EP3586998A4 (fr) * 2017-02-23 2020-08-05 Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.) Procédé de production d'alliage de ti-al
US11319614B2 (en) 2014-11-04 2022-05-03 Kobe Steel, Ltd. Method for deoxidizing Al—Nb—Ti alloy

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04103732A (ja) * 1990-08-24 1992-04-06 Univ Kyoto 金属間化合物Ａｌ↓３Ｔｉの製造方法
JPH0559466A (ja) * 1991-08-30 1993-03-09 Kobe Steel Ltd 低酸素Ｔｉ−Ａｌ系合金の製造方法および低酸素Ｔｉ−Ａｌ系合金
JPH05140669A (ja) * 1991-11-15 1993-06-08 Kobe Steel Ltd 低酸素Ｔｉ−Ａｌ系合金およびその製造方法

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04103732A (ja) * 1990-08-24 1992-04-06 Univ Kyoto 金属間化合物Ａｌ↓３Ｔｉの製造方法
JPH0559466A (ja) * 1991-08-30 1993-03-09 Kobe Steel Ltd 低酸素Ｔｉ−Ａｌ系合金の製造方法および低酸素Ｔｉ−Ａｌ系合金
JPH05140669A (ja) * 1991-11-15 1993-06-08 Kobe Steel Ltd 低酸素Ｔｉ−Ａｌ系合金およびその製造方法

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU2015344310B2 (en) * 2014-11-04 2018-12-20 Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.) Method for deoxidizing Al-Nb-Ti alloy
US11319614B2 (en) 2014-11-04 2022-05-03 Kobe Steel, Ltd. Method for deoxidizing Al—Nb—Ti alloy
WO2018155658A1 (fr) 2017-02-23 2018-08-30 株式会社神戸製鋼所 Procédé de production d'alliage de ti-al
EP3586998A4 (fr) * 2017-02-23 2020-08-05 Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.) Procédé de production d'alliage de ti-al
US11377714B2 (en) 2017-02-23 2022-07-05 Kobe Steel, Ltd. Method for producing Ti-Al alloy

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