阅读说明：本技术 用于液态金属沉积或增材制造的材料的组成、方法和产品 (Compositions, methods, and products of materials for liquid metal deposition or additive manufacturing ) 是由 贝恩德·布尔鲍姆 亨宁·哈内布特 安德烈亚斯·鲁基 艾哈迈德·卡迈勒 于 2019-08-02 设计创作，主要内容包括：在基于镍的超合金、MCrALY组合物和钎焊合金的混合物中,发现用于焊接或用于增材制造的良好的组成。(In the mixture of nickel based superalloy, MCrALY composition and brazing alloy a good composition for welding or for additive manufacturing was found.)

1. A metal powder mixture is provided, which comprises a metal powder,

particularly useful for construction via liquid metal deposition or any additive manufacturing method,

the metal powder mixture comprises (in weight%),

in particular consisting of (in% by weight):

a cobalt (Co) -based superalloy or a nickel (Ni) -based superalloy in an amount of 20% to 60%,

NiCoCrAlY composition with a content of 70% to 30% and

a metal brazing material in an amount of 10% to 5%,

wherein the melting point of the brazing material is at least 10K, in particular at least 20K,

in particular, the powder mixture consists of 3 powders with different compositions.

2. The metal powder mixture according to claim 1,

comprising (in% by weight) the following ingredients,

in particular consisting of (in% by weight):

3. the metal powder mixture according to claim 1 or 2,

wherein the nickel (Ni) -based superalloy comprises (in weight%),

in particular consisting of (in% by weight):

optionally, optionally

In particular free of yttrium (Y) and/or

Does not contain rhenium (Re) and does not contain rhenium (Re),

the remaining part of nickel (Ni).

4. The metal powder mixture according to any one of claims 1, 2 or 3,

wherein the nickel (Ni) -based superalloy comprises (in weight%),

in particular consisting of (in% by weight):

in particular free of yttrium (Y) and/or

Rhenium (Re) is absent.

5. The mixture according to claim 1, 2, 3 or 4,

wherein the nickel-based superalloy is selected from

Alloy 247, Inconel 625, Rene 80, and/or Merl 72,

in particular alloy 247.

6. The metal powder mixture according to any one of claims 1 to 5,

wherein the brazing alloy comprises (in weight%),

in particular consisting of (in% by weight):

optionally, optionally

In particular

Does not contain yttrium (Y),

and/or does not contain rhenium (Re),

and/or carbon (C) free.

7. The metal powder mixture according to any one of claims 1 to 6,

wherein the brazing alloy comprises (in weight%),

in particular consisting of (in% by weight):

in particular

Is free of yttrium (Y) and/or

Does not contain tungsten (W),

and/or does not contain titanium (Ti),

and/or does not contain molybdenum (Mo),

and/or does not contain rhenium (Re),

and/or carbon (C) free.

8. The metal powder mixture according to any one of claims 1, 6 or 7,

wherein the melting inhibitor boron (B) is at least partially replaced by or additionally added with:

silicon (Si) and/or magnesium (Mg) and/or manganese (Mn).

9. The mixture according to claim 1, 2, 3, 4, 5, 6, 7 or 8,

wherein the brazing material is a nickel-based alloy having the following composition: at least 0.5% by weight of boron (B), in particular at least 0.7% by weight of boron (B) and/or

At least 1.0 wt.% silicon (Si),

in particular at least 1.5 wt.% silicon (Si) and/or

At least 2.0 wt.% magnesium (Mg),

very particularly brazing alloy Amdry DF-4B.

10. The mixture according to any one of the preceding claims 1 to 9,

wherein the NiCoCrAlY consists of NiCoCrAlY and optionally tantalum (Ta), rhenium (Re), iron (Fe) and/or silicon (Si).

11. A metal mixture according to any one of claims 1, 2, 3, 4, 5, 6, 7, 8, 9 or 10,

wherein the NiCoCrAlY composition comprises (in weight%),

in particular consisting of (in% by weight):

14 to 22% chromium (Cr)

9.0% to 11.5% of aluminum (Al)

0.3% to 0.5% yttrium (Y)

11% to 26% cobalt (Co)

0% to 1.0% silicon (Si),

in particular 0.1% to 1.0% of silicon (Si),

0% to 2.5% rhenium (Re) or

And the remaining portion of nickel (Ni).

12. The mixture according to any one of claims 1 to 10,

wherein the NiCoCrAlY composition comprises (in weight%),

in particular consisting of (in% by weight):

20 to 22% chromium (Cr)

10.5 to 11.5% of aluminum (Al)

0.3% to 0.5% yttrium (Y)

1.5% to 2.5% rhenium (Re) or 0.5% to 1.5% rhenium

11% to 13% cobalt (Co) and

the remaining part of nickel (Ni).

13. The mixture according to any one of claims 1 to 10,

wherein the NiCoCrAlY composition comprises (in weight%),

in particular consisting of (in% by weight):

15 to 21% chromium (Cr)

24% to 26% cobalt (Co)

9.0% to 11.5% of aluminum (Al)

0.05% to 0.7% yttrium (Y)

0.5% to 2.0% rhenium (Re) and

the remaining part of nickel (Ni).

14. The mixture according to any one of claims 1 to 10,

wherein the NiCoCrAlY composition comprises (in weight%),

in particular consisting of (in% by weight):

22% to 24% cobalt (Co)

14 to 16% chromium (Cr)

10.5 to 11.5% of aluminum (Al)

0.2% to 0.4% yttrium (Y)

Optionally 0.3% to 0.9% tantalum (Ta) and

the remaining part of nickel (Ni).

15. A method of constructing a metallic material is provided,

wherein a metal powder mixture according to any one of claims 1 to 14 is used.

16. The method of claim 15, wherein the first and second light sources are selected from the group consisting of,

for welding using powder cladding, wire bonding, or

For additive manufacturing using a powder bed,

in particular SLM, SLS.

17. A kind of product is provided, which comprises,

produced by the method of claim 15 or 16, or

Comprising a metal powder mixture according to any one of claims 1 to 14.

18. The product of claim 17, wherein said composition is in the form of a tablet,

wherein first a layer of a mixture consisting of the following components is applied directly on a substrate: NiCoCrAlY, in particular according to claim 10, 11, 12, 13 or 14, and a nickel-based superalloy or a cobalt-based superalloy, in particular according to claim 3, 4 or 5,

and then applying a layer of the mixture according to claims 1 to 14.

The present disclosure relates to laser metal deposition using powdered additive materials.

The material mixture may be preferably used for tip repair with improved oxidation resistance compared to most currently used alloys.

The oxidation resistance of the developed material mixture is superior to that of base material alloy 247.

The melting point of the brazing material is always at least 10K, in particular at least 20K, lower than that of the nickel-based superalloy or the cobalt-based superalloy.

The powder mixture may preferably be welded using a standard electro-cladding process or used in any alternative manufacturing process, like SLM or SLS in particular.

Standard heat treatment processes for base nickel based alloys are used for subsequent brazing processes.

The composition of the powder mixture is described in% by weight as follows:

brazing: not less than 5% and less than 10%, especially Amdry DF-4B,

NiCoCrAlY: 70 percent to 30 percent of the total weight of the composition,

nickel-based superalloys: 20% to 60%, in particular alloy 247,

wherein the melting point of the braze is at least 10K, in particular 20K, lower than the melting point of the nickel-based superalloy or the cobalt-based superalloy.

The mixture comprises 3 powders having different compositions, in particular consisting of 3 powders having different compositions.

The metal powder mixture comprises (in weight%),

in particular consisting of (in% by weight):

has the advantages that

High oxidation resistance material made of standard powder alloy

Standard welding process "powder cladding" can be used for blade tip build up welding (blade tip build up welding).

The metal powder mixture comprises a nickel (Ni) -based superalloy comprising (in weight%),

in particular consisting of (in% by weight):

optionally, optionally

In particular free of yttrium (Y) and/or

Does not contain rhenium (Re) and does not contain rhenium (Re),

the remaining part of the nickel (Ni),

in particular

A nickel (Ni) -based superalloy contains (in weight percent) the following,

in particular consisting of (in% by weight):

in particular free of yttrium (Y) and/or

Rhenium (Re) is absent.

Preferably, the nickel-based superalloy is selected from alloy 247, Inconel 625, Rene 80 and/or Merl 72, in particular alloy 247.

Inconel 625 comprises (in weight%):

rene 80 comprises (in wt%):

Ni＝60.0％，

Cr＝14.0％，

Co＝9.5％，

Ti＝5.0％，

Mo＝4.0％，

W＝4.0％，

Al＝3.0％，

C＝0.17％，

B＝0.015％，

Zr＝0.03％。

merl 72 comprises (in wt%):

47% of the Co, the content of which,

20 percent of Cr, and the balance of Cr,

15% of the Ni content in the alloy steel,

9% of the total amount of W,

4.4 percent of Al, and the balance of Al,

3% of the amount of Ta contained in the alloy,

1.1 percent of Hf in the form of hydrogen fluoride,

0.35% of C, and the balance,

0.2% of Ti, and (C),

0.04% of Y.

The brazing alloy preferably comprises (in weight%),

in particular consisting of (in% by weight):

optionally, optionally

In particular

Does not contain yttrium (Y),

and/or does not contain rhenium (Re),

and/or carbon (C) free.

In particular, the brazing alloy comprises (in weight%),

in particular consisting of (in% by weight):

in particular

Is free of yttrium (Y) and/or

Does not contain tungsten (W),

and/or does not contain titanium (Ti),

and/or does not contain molybdenum (Mo),

and/or does not contain rhenium (Re),

and/or carbon (C) free.

The boron (B) as a melting inhibitor in the brazing alloy is at least partially replaced by or additionally added to:

silicon (Si) and/or magnesium (Mg) and/or manganese (Mn).

NiCoCrAlY alloy means NiCoCrAlY-X, wherein X is optionally tantalum (Ta), silicon (Si), and/or rhenium (Re).

In particular NiCoCrAlY and optionally X ═ tantalum (Ta), silicon (Si), iron (Fe) or rhenium (Re).

The NiCoCrAlY composition preferably comprises (in weight%):

20 to 22% of chromium (Cr),

10.5 to 11.5% of aluminum (Al),

0.3% to 0.5% yttrium (Y),

1.5% to 2.5% rhenium (Re) or

0.5% to 1.5% rhenium, and

11% to 13% cobalt (Co) and

the remaining part of nickel (Ni).

Further preferably, an example of a NiCoCrAlY composition comprises (in weight%):

15% to 21% chromium (Cr),

24% to 26% cobalt (Co),

9.0% to 11.5% of aluminum (Al),

0.05% to 0.7% of yttrium (Y),

0.5% to 2.0% rhenium (Re) and

the remaining part of nickel (Ni).

Another example of a NiCoCrAlY composition comprises (in weight%):

22% to 24% cobalt (Co),

14 to 16% of chromium (Cr),

10.5% to 11.5% of aluminium (A1),

0.2% to 0.4% yttrium (Y),

optionally 0.3% to 0.9% tantalum (Ta),

the remaining part of nickel (Ni).

The brazing alloy contains boron (B) and/or silicon (Si) and/or magnesium (Mg) and/or manganese (Mn) as a melting inhibitor, and an example of a commercially available brazing is the so-called Amdry powder, an example of which is given by Amdry DF-4B.

The brazing material is preferably a nickel-based alloy having the following composition:

at least 0.5% by weight of boron (B), in particular at least 0.7% by weight of boron (B)

And/or

At least 1.0 wt.% silicon (Si),

in particular at least 1.5 wt.% silicon (Si) and/or

At least 2.0 wt.% magnesium (Mg),

very particularly brazing alloy Amdry DF-4B.

Fig. 1 shows a method of how the material of the invention is applied during welding, and fig. 2 shows a schematic arrangement for additive manufacturing using the powder of the invention, in particular via laser.

The specification and drawings are merely examples of the invention.

The method and materials can be used to start building an entirely new component on a substrate or to repair an existing substrate 4, both of which mean the building of materials.

For cracks or corrosion that have already been removed, it is necessary to perform material construction. In this case, the blade tip is repaired, for example only, by building material onto the blade tip 7. The surface 10 of the base 4 exposes the substrate on which the material is applied. The material 16 is applied via a nozzle 13 connected to a powder supply 19, the material 16 being a material according to the invention. The nozzle 13 also comprises a laser (not shown) for welding together with the powder 16 by melting the powder via a laser beam.

The material of the present invention may also be produced as a rod and or wire and may be used via wire bonding.

In fig. 2, another application of the material of the present invention is shown.

Here, a selective laser melting process (instead of a laser, also an electron beam can be used) is used, wherein the powder bed 22 has the powder mixture according to the invention, to produce a completely new component or even to repair the substrate 4.

The substrate 4 is completely inside the powder bed 22 and a laser 25 with a laser beam 28 is used to melt or partially sinter the powder, wherein the material is built up to the substrate 4 where it is needed or desired.

The material of the present invention is a metal powder mixture of three different powders.

In particular, the powder mixture comprises alloy 247 or a nickel-based superalloy in general and

NiCoCrAlY, a brazing alloy having a melting point at least 20K lower than that of a nickel-based superalloy.

Additional examples of nickel-based superalloys are listed in fig. 3.

The NiCoCrAlY may also optionally comprise additives such as rhenium (Re), tantalum (Ta) and/or silicon (Si), very particularly only these.

Another example is one in which a layer of a mixture consisting of the following components is first applied directly on the substrate: NiCoCrAlY, in particular according to claim 3, 4 or 5, and a nickel-based superalloy or a cobalt-based superalloy, in particular according to claim 10, 11, 12; a layer of the mixture according to claims 1 to 13 is then applied.