CN115537605A - Transition metal composition for preventing interface element diffusion and titanium/steel assembly method - Google Patents
Transition metal composition for preventing interface element diffusion and titanium/steel assembly method Download PDFInfo
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- CN115537605A CN115537605A CN202211211027.6A CN202211211027A CN115537605A CN 115537605 A CN115537605 A CN 115537605A CN 202211211027 A CN202211211027 A CN 202211211027A CN 115537605 A CN115537605 A CN 115537605A
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- transition metal
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C19/00—Alloys based on nickel or cobalt
- C22C19/03—Alloys based on nickel or cobalt based on nickel
- C22C19/05—Alloys based on nickel or cobalt based on nickel with chromium
- C22C19/058—Alloys based on nickel or cobalt based on nickel with chromium without Mo and W
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
- B21B1/38—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling sheets of limited length, e.g. folded sheets, superimposed sheets, pack rolling
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B47/00—Auxiliary arrangements, devices or methods in connection with rolling of multi-layer sheets of metal
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
- B21B1/38—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling sheets of limited length, e.g. folded sheets, superimposed sheets, pack rolling
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Abstract
The present invention relates to a transition metal composition for preventing diffusion of interface elements and a titanium/steel assembly method. The preparation method of the transition metal composition comprises the following steps: the amorphous nickel-based brazing filler metal is prepared by mixing and melting raw materials of chromium, iron, silicon, carbon, boron and nickel, and then rapidly cooling and forming through a belt throwing machine. The assembly method comprises the following steps: and (3) respectively polishing the surfaces to be combined of the titanium and the steel to remove an oxide layer, flatly paving the transition metal composition on the surface to be combined of the steel, covering the surface to be combined of the titanium on the transition metal composition, and finally integrally assembling. The invention introduces the transition metal composition between titanium and steel, which can inhibit the element diffusion between interfaces, and not only can greatly reduce TiC and TiFe of the combined interfaces 2 And formation of brittle compounds of TiFe, andand the components of the titanium plate near the bonding interface can be ensured not to be diluted due to element diffusion, so that the actual corrosion-resistant thickness of the composite plate is reduced.
Description
Technical Field
The invention belongs to the field of metallurgy, and particularly relates to a transition metal composition for preventing interface element diffusion and a titanium/steel assembly method.
Background
The existing manufacturing methods of the titanium/steel composite plate mainly comprise a diffusion welding method, an explosion/rolling composite method and a rolling composite method. Under high temperature condition, brittle TiC, tiFe are easily generated on the titanium/steel combination interface 2 And TiFe compounds, which reduce the bonding strength of the composite panel.
In the prior art, the titanium/steel composite plate intermediate layer is widely applied and is basically industrial pure iron DT4, but the intermediate layer only simply reduces the generation of TiC at the interface and cannot reduce TiFe at the interface 2 And the generation of TiFe, and the mode can not inhibit the problem that the actual corrosion-resistant thickness of the composite plate is reduced due to the diffusion of the titanium element at the position close to the bonding interface.
Small scale experiments have shown that the use of pure nickel as an intermediate layer can suitably alleviate the above problems. However, pure nickel is high in price and high in popularization difficulty, and further verification shows that when pure nickel is used as the middle layer, the thickness of the middle layer needs to be more than 1.0mm, the thickness is far thicker than that of a conventional middle layer, and the raw material cost is further increased.
Therefore, the technical scheme of the invention is provided.
Disclosure of Invention
In order to solve the problems of the prior art, the present invention provides a transition metal composition for preventing diffusion of interface elements and a titanium/steel assembly method. The invention introduces transition metal composition (layer) between titanium and steel, which can inhibit element diffusion between interfaces, and not only can greatly reduce TiC and TiFe of bonding interfaces 2 And the generation of TiFe brittle compounds, no inclusion is generated, and the components of the titanium plate at the position close to the bonding interface can be ensured not to be diluted due to element diffusion so as not to reduce the actual corrosion-resistant thickness of the composite plate.
The invention provides a transition metal composition for preventing interface elements from diffusing, which is prepared by melting the following metal raw materials in percentage by weight:
6 to 8 percent of chromium, 2.5 to 3.5 percent of iron, 4 to 5 percent of silicon, 0.05 to 0.07 percent of carbon, 3 to 3.4 percent of boron and the balance of nickel.
Preferably, the metal raw materials comprise the following components in percentage by weight: 7% of chromium, 3% of iron, 4.5% of silicon, 0.06% of carbon, 3.2% of boron and the balance of nickel.
Preferably, the melting temperature is 1025-1050 ℃.
Preferably, the transition metal composition is in the shape of a sheet, and the thickness of the transition metal composition is 0.03 to 0.04mm.
The invention also provides a titanium/steel assembly method, which comprises the following steps:
and (3) respectively polishing the to-be-combined surfaces of the titanium and the steel to remove an oxide layer, then flatly paving the transition metal composition on the to-be-combined surface of the steel, covering the to-be-combined surface of the titanium on the transition metal composition, and finally integrally assembling.
Preferably, the assembling mode is a vacuum assembling hot rolling method.
The invention has the beneficial effects that:
in the process of titanium/steel assembly, the invention introduces the transition metal composition (layer), which can inhibit the element diffusion between the interfaces, and not only can greatly reduce the TiC and TiFe of the combined interface 2 And the generation of TiFe brittle compounds, and can also ensure that the components of the titanium plate near the bonding interface are not diluted due to element diffusion so as not to reduce the actual corrosion-resistant thickness of the composite plate.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a line scan analysis of the interface elements of the titanium/steel composite panel obtained in example 6 after the addition of the transition metal composition.
FIG. 2 is a structural diagram of the interface of the titanium/steel composite plate obtained in example 6.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be described in detail below. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. All other embodiments, which can be derived by a person skilled in the art from the examples given herein without any inventive step, are within the scope of the present invention.
Example 1
This example provides a method for preparing a transition metal composition for preventing diffusion of interface elements, the method comprising:
mixing and melting raw materials of chromium, iron, silicon, carbon, boron and nickel at 1025 ℃, and rapidly cooling and forming by a belt throwing machine to obtain the transition metal composition.
In this example, the weight percentages of the raw materials used are shown in table 1.
TABLE 1 weight percentages of the respective raw materials
Example 2
The embodiment provides a titanium/steel assembly method, which comprises the following steps:
on the basis of the embodiment 1, the surfaces to be combined of titanium and steel are respectively ground to remove an oxide layer, then the transition metal composition obtained in the embodiment 1 is flatly laid on the surfaces to be combined of steel, the surfaces to be combined of titanium are covered with the transition metal composition, and finally the whole assembly is completed.
Example 3
This example provides a method for preparing a transition metal composition for preventing diffusion of interface elements, the method comprising:
mixing and melting raw materials of chromium, iron, silicon, carbon, boron and nickel at 1050 ℃, and rapidly cooling and forming by a belt throwing machine to obtain the transition metal composition.
In this example, the weight percentage of the raw materials used is shown in table 2.
TABLE 2 weight percentages of the respective raw materials
| Composition of raw materials | Raw material quantity (weight percentage) |
| Chromium (III) | 8％ |
| Iron | 3.5％ |
| Silicon | 5％ |
| Carbon (C) | 0.07％ |
| Boron (B) | 3.4％ |
| Nickel (II) | Balance of |
Example 4
The embodiment provides a titanium/steel assembly method, which comprises the following steps:
on the basis of the embodiment 3, the surfaces to be combined of titanium and steel are respectively ground to remove an oxide layer, then the transition metal composition obtained in the embodiment 3 is flatly laid on the surfaces to be combined of steel, the surfaces to be combined of titanium are covered with the transition metal composition, and finally the whole assembly is completed.
Example 5
This example provides a method for preparing a transition metal composition for preventing diffusion of interface elements, the method comprising:
mixing and melting raw materials of chromium, iron, silicon, carbon, boron and nickel at 1040 ℃, and rapidly cooling and forming through a belt throwing machine to obtain the transition metal composition.
In this example, the weight percentages of the raw materials used are shown in table 3.
TABLE 3 weight percentages of the respective raw materials
| Composition of raw materials | Raw material quantity (weight percentage) |
| Chromium (III) | 7％ |
| Iron | 3％ |
| Silicon | 4.5％ |
| Carbon (C) | 0.06％ |
| Boron | 3.2％ |
| Nickel (II) | Allowance of |
Example 6
The embodiment provides a titanium/steel assembly method, which comprises the following steps:
on the basis of the embodiment 5, the surfaces to be combined of titanium and steel are respectively ground to remove an oxide layer, then the transition metal composition obtained in the embodiment 5 is flatly laid on the surface to be combined of steel, the surface to be combined of titanium is covered on the transition metal composition, and finally the whole assembly is finished.
The titanium/steel composite plate obtained in example 6 was analyzed by the present invention, and the diffusion layer of the titanium/steel composite plate was generally thin, and a transition metal composition was added thereto so as to prevent the metallic titanium from contacting with the elements in the steel. In the process of combining the nickel and the steel, intermetallic compounds cannot be generated between the nickel and the steel, and the combination interface of the nickel and the steel generates high-strength connection; and the intermetallic compound of titanium and nickel almost runs through the whole solid phase region, and compared with TiC and Ti-Fe, the intermetallic compound of Ti-Ni has certain plasticity and relatively high toughness. And the shear strength of the transition metal composition is about 177MPa and is greater than 140MPa of the national standard through testing, after an interface is tested, the result is shown in figure 1, the result shows that the element diffusion condition is reduced, the interface mainly contains Ni element and a small amount of C element, and the diffusion layer is thin. As can be seen from fig. 2, no inclusions were formed in the interface structure, and the interface was clear.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (6)
1. A transition metal composition for preventing diffusion of interfacial elements, wherein the transition metal composition is prepared by melting the following metal raw materials in percentage by weight:
6 to 8 percent of chromium, 2.5 to 3.5 percent of iron, 4 to 5 percent of silicon, 0.05 to 0.07 percent of carbon, 3 to 3.4 percent of boron and the balance of nickel.
2. The transition metal composition for preventing diffusion of an interfacial element according to claim 1, wherein the metal raw material comprises, in weight percent: 7% of chromium, 3% of iron, 4.5% of silicon, 0.06% of carbon, 3.2% of boron and the balance of nickel.
3. The transition metal composition for preventing diffusion of an interface element according to claim 1, wherein the temperature of the melting is 1025 to 1050 ℃.
4. The transition metal composition for preventing diffusion of an interfacial element according to claim 1, wherein the transition metal composition has a layered shape and a thickness of 0.03 to 0.04mm.
5. A titanium/steel assembly method is characterized by comprising the following steps:
and (3) respectively polishing the surfaces to be combined of the titanium and the steel to remove an oxide layer, flatly paving the transition metal composition on the surface to be combined of the steel, covering the surface to be combined of the titanium on the transition metal composition, and finally integrally assembling.
6. The method of assembling as claimed in claim 5, wherein said assembling is by vacuum hot rolling.
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| CN202211211027.6A CN115537605A (en) | 2022-09-30 | 2022-09-30 | Transition metal composition for preventing interface element diffusion and titanium/steel assembly method |
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| CN202211211027.6A CN115537605A (en) | 2022-09-30 | 2022-09-30 | Transition metal composition for preventing interface element diffusion and titanium/steel assembly method |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4713217A (en) * | 1984-06-04 | 1987-12-15 | Alloy Metals, Inc. | Nickel base brazing alloy and method |
| CN102773670A (en) * | 2012-07-26 | 2012-11-14 | 李向民 | Manufacturing method of titanium-steel-titanium two-sided composite plate |
| CN108998698A (en) * | 2017-06-06 | 2018-12-14 | 通用电气公司 | Superalloy articles, component and its processing method |
| CN110102572A (en) * | 2019-05-07 | 2019-08-09 | 南京佑天金属科技有限公司 | A kind of non-real empty state rolling titanium steel composite board and preparation method thereof |
| CN113732479A (en) * | 2021-08-11 | 2021-12-03 | 北京机电研究所有限公司 | Dissimilar metal diffusion bonding method for G115 heat-resistant steel and Inconel740 high-temperature alloy |
-
2022
- 2022-09-30 CN CN202211211027.6A patent/CN115537605A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4713217A (en) * | 1984-06-04 | 1987-12-15 | Alloy Metals, Inc. | Nickel base brazing alloy and method |
| CN102773670A (en) * | 2012-07-26 | 2012-11-14 | 李向民 | Manufacturing method of titanium-steel-titanium two-sided composite plate |
| CN108998698A (en) * | 2017-06-06 | 2018-12-14 | 通用电气公司 | Superalloy articles, component and its processing method |
| CN110102572A (en) * | 2019-05-07 | 2019-08-09 | 南京佑天金属科技有限公司 | A kind of non-real empty state rolling titanium steel composite board and preparation method thereof |
| CN113732479A (en) * | 2021-08-11 | 2021-12-03 | 北京机电研究所有限公司 | Dissimilar metal diffusion bonding method for G115 heat-resistant steel and Inconel740 high-temperature alloy |
Non-Patent Citations (1)
| Title |
|---|
| 刘军 等: "不锈钢真空钎焊接头组织和力学性能研究", 热加工工艺 * |
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