CN1609048A - In-situ synthesis process of polyelement reinforced titanium base composite material - Google Patents
In-situ synthesis process of polyelement reinforced titanium base composite material Download PDFInfo
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Abstract
The present invention relates to material preparing technology. The in-situ synthesis process of polyelement reinforced titanium base composite material includes the steps of: weighing and mixing spongy titanium, boron carbide, RE or RE alloy, boron oxide and alloying elements; smelting in cold mould furnace and pressing into electrode, welding and setting inside vacuum arc furnace, vacuumizing to 0.001-1 Pa, applying voltage and regulating current for smelting in twice or more times, and solidification. The present invention can prepare polyelement reinforced titanium base composite material in different sizes and shapes simply in low cost.
Description
Technical Field
The invention relates to a preparation method of a composite material used in the technical field of material preparation, in particular to an in-situ synthesis method of a multielement reinforced titanium-based composite material.
Background
Titanium-based composites are mainly classified into two major categories, fiber-reinforced titanium-based composites and particle-reinforced titanium-based composites. The fiber reinforced titanium-based composite material has anisotropic performance, complex process and high price, while the particle reinforced titanium-based composite material has isotropic performance, excellent mechanical property, easy processing and relatively low cost, thereby attracting wide attention of people. At present, one or two reinforcements are mostly adopted in the particle reinforced titanium-based composite material, and the titanium-based composite material reinforced by multiple reinforcements is not available. Due to the interaction of the multi-element multi-scale reinforcement, the comprehensive performance of the composite material is expected to be further improved, so that the research on the composite material is also shifted to multi-element reinforcement from one-element or two-element reinforcement. The development of the composite material is a key direction and a necessary trend of the multi-element and multi-scale composite material.
The titanium-based composites prepared to date are almost unitary or binary reinforcement reinforced titanium-based composites and the preparation method can be simply summarized as external addition and in-situ autogenous methods. Compared with an external method, the in-situ self-generation method has obvious advantages and can prepare composite materials with more excellent performance. At present, the main preparation methods of the in-situ autogenous titanium-based composite material comprise a rapid solidification method (RSP), a mechanical alloying Method (MA), a powder metallurgy method (PM), a combustion assisted casting method (CAC), a reaction hot pressing method (RHP) and the like, and the methods for preparing the titanium-based composite material all need special equipment and have complex processes, so the cost of the titanium-based composite material is increased, and the practical application of the titanium-based composite material is limited.
Through the search of the prior art documents, the Chinese patent names are as follows: the preparation method of the TiB and rare earth oxide reinforced titanium-based composite material has the following patent numbers: ZL02111575.3, the patent utilizes ordinary smelting technology to prepare TiB and rare earth oxide reinforced titanium-based composite material, although the technology is simple, the reinforcement is binary, and the multielement multi-scale reinforced titanium-based composite material cannot be prepared.
Disclosure of Invention
The invention aims to overcome the defects and defects in the prior art, and provides an in-situ synthesis method of a multielement enhanced titanium-based composite material, so that the multielement multi-scale enhanced titanium-based composite material is prepared simply and conveniently at low cost, the reinforcements can be synthesized in situ in a matrix, are uniformly distributed in the matrix, and have multielement shapes and sizes, and the interaction effect of the multielement multi-scale reinforcements can be fully exerted; the interface of the reinforcement and the matrix is well combined, and the mechanical property and the physical property are excellent. The invention utilizes the existing titanium alloy smelting equipment and process, does not need special preparation equipment and complex processing technology, only needs to add reactants in raw materials, can greatly reduce the cost of the composite material, and is particularly suitable for batch production.
The invention is realized by the following technical scheme, and the method comprises the following steps:
(1) weighing sponge titanium, boron carbide, rare earth (or intermediate alloy containing rare earth elements), boron oxide and alloying elements, wherein the content of boron oxide is 0-5%, the content of rare earth is 0-24%, and the content of boron carbide is 0-5%;
(2) mixing titanium sponge, reactants and alloying elements uniformly, pressing into an electrode by consumable electric arc melting, assembling and welding the electrode, and putting into a vacuum non-consumable electric arc furnace or a vacuum consumable electric arc furnace;
(3) vacuumizing, controlling the vacuum degree at 1X 10-3Adding voltage to adjust current for smelting between Pa and 1Pa, wherein the smelting times are more than or equal to two times;
(4) solidifying to obtain the multielement multi-scale reinforced titanium-based composite material.
The in-situ autogenous reinforcement of the invention is carried out according to the following reactions:
the multielement multi-scale reinforced titanium-based composite material obtained by the invention can be used for preparing different titanium-based composite material profiles through processes such as forging, rolling and the like.
The volume fraction of the reinforcement is controlled within 30 percent, the rare earth elements can be added in a pure metal mode or an intermediate alloy mode, the alloying elements comprise one or more of the alloying elements of all traditional titanium alloys such as Al, Sn, Zr, Mo and the like, the content of the alloying elements adjusts the components of the alloying elements and the proportion of the alloying elements according to the required performance requirements, and the molar ratio of the reinforcement TiC, TiB and rare earth oxide can be realized by adding different boron carbide, boron oxide and rare earth or rare earth intermediate alloy. The titanium-based composite material prepared by the method can be prepared into various sections by secondary processing techniques such as forging, hot rolling and the like, and finally is processed into parts by utilizing a common machining mode.
The invention has substantive characteristics and remarkable progress, can simply and conveniently prepare the multielement multi-scale reinforcement reinforced titanium-based composite material with different shapes and sizes at low cost under the condition of not changing the traditional titanium alloy processing equipment and process flow, the composite material can fully play the coordinated reinforcement effect of the multielement reinforcement to realize the preparation of the high-performance titanium-based composite material, and the composite material with different performances can be prepared by adjusting the content and the molar ratio of the reinforcement and the components of the matrix alloy to meet different performance requirements. The invention comprehensively utilizes the advantages of the in-situ autogenous process, creatively exerts the coordination and strengthening mechanism of the multielement reinforcement, and can prepare the titanium-based composite material with better comprehensive performance.
Detailed Description
The following five examples are provided in connection with the present disclosure:
example 1: preparation of 0.5% (Nd)2O3+ TiB + TiC)/Ti composite material (Nd)2O3∶TiB∶TiC＝2∶6∶1)。
Weighing 99.753% titanium sponge, 0.153% neodymium, 0.037% boron oxide and 0.057% boron carbide powder according to the proportion, mixing them uniformly, placing them into a non-consumable electric arc furnace, vacuumizing the non-consumable electric arc furnace with vacuum degree of 1X 10-3Pa, smelting in a vacuum non-consumable arc furnace for three times, cooling with the furnace, and condensingAfter the titanium matrix composite material reinforced by the ternary reinforcement of TiB crystal whiskers, TiC particles and nano-grade neodymium oxide is prepared. The embodiment can prepare the titanium-based composite material reinforced by micron TiB whiskers, TiC particles and nano neodymium oxide.
Example 2: obtaining 10% (Y)2O3+ TiB + TiC)/Ti-10V-2Fe-3Al composite material (Y)2O3∶TiB∶TiC＝3∶7∶1)。
According to the proportion, 83.778% of sponge titanium, 2.516% of yttrium, 0.989% of boron oxide, 0.990% of boron carbide powder, 10.023% of aluminum-vanadium intermediate alloy, containing 78% of V, 0.141% of aluminum wire and 1.563% of iron powder are weighed, the materials are uniformly mixed, pressed into a rod-shaped electrode by a press, welded by an electrode assembly and then placed into a vacuum consumable arc furnace, the vacuum consumable arc furnace is vacuumized, the working vacuum degree is 0.4Pa, then the melting is carried out by the vacuum consumable arc furnace, a sample is melted for two times, and finally the melting is carried out along with the furnace, so that the TiB, TiC and rare earth yttrium oxide reinforced titanium-based composite material. The cast ingot is forged to be cogging and rolled by a rolling mill to prepare a plate. The embodiment can prepare the multielement reinforced titanium-based composite material plate which has more reinforcement and can be rolled.
Example 3: preparation of 10% (Nd)2O3+ TiB + TiC)/Ti-6Al-2Sn-4Zr-2Mo-0.08Si composite material (Nd)2O3∶TiB∶TiC＝2∶6∶1)。
According to the proportion, 83.379% of sponge titanium, 3.009% of neodymium, 0.731% of boron oxide, 1.131% of boron carbide powder, 3.101% of aluminum-molybdenum intermediate alloy, 50% of Mo, 3.101% of aluminum wire, 2.385% of titanium-tin intermediate alloy, 65% of tin, 3.101% of zirconium and 0.062% of crystalline silicon are weighed, uniformly mixed, pressed into a rod-shaped electrode by a press, welded and then placed into a vacuum consumable arc furnace, the vacuum consumable arc furnace is vacuumized, the working vacuum degree is 0.05Pa, then the vacuum consumable arc furnace is used for smelting, a sample is smelted for three times, and finally the titanium-based composite material reinforced by TiB, TiC and rare earth yttrium oxide is prepared by furnace cooling. The ingot can be made into bar materials through forging cogging and two-phase region forging. This example produces a multi-part reinforced titanium-based composite material having superior heat resistance.
Example 4: preparation of 15% (Ce)2O3+ TiB + TiC)/Ti-6Al-4V composite material (Ce)2O3∶TiB∶TiC＝2∶6∶1)。
Weighing 84.688% of sponge titanium, 4.669% of cerium, 1.167% of boron oxide, 1.857% of boron carbide and 3.907% of aluminum-vanadium intermediate alloy containing 78% of V and 3.712% of aluminum wires according to the proportion, uniformly mixing the materials, pressing the materials into a rod-shaped electrode by using a press, welding an electrode assembly, then putting the electrode assembly into a vacuum consumable arc furnace, vacuumizing the vacuum consumable arc furnace to ensure that the working vacuum degree is 0.03Pa, then smelting the electrode assembly by using the vacuum consumable arc furnace, smelting a sample for two times, and finally cooling the electrode assembly along with the furnace to prepare the TiB, TiC and rare earth cerium oxide reinforced titanium-based composite material. The ingot can be made into bar after forging and heat treatment. The embodiment can prepare the multielement reinforced titanium-based composite material bar with better wear resistance.
Example 5: preparation of 29% (Nd)2O3+ TiB + TiC)/Ti composite material (Nd)2O3∶TiB∶TiC＝2∶11∶2)。
According to the proportion, 87.087% of titanium sponge, 6.474% of neodymium, 1.574% of boron oxide and 4.865% of boron carbide powder are weighed, uniformly mixed, put into a non-consumable electric arc furnace, vacuumized, controlled at 0.06Pa, then subjected to vacuum melting, melted for three times, and finally cooled along with the furnace, so as to obtain the ternary reinforced titanium-based composite material. This example allows the preparation of a multi-component reinforced titanium-based composite with the most reinforcement.
Claims (4)
1. An in-situ synthesis method of a multielement reinforced titanium-based composite material is characterized by comprising the following steps:
(1) weighing sponge titanium, boron carbide, rare earth or intermediate alloy containing rare earth elements, boron oxide and alloying elements, wherein the content of boron oxide is 0-5%, the content of rare earth is 0-24%, and the content of boron carbide is 0-5%;
(2) mixing titanium sponge, reactants and alloying elements uniformly, pressing into an electrode by consumable electric arc melting, assembling and welding the electrode, and putting into a vacuum non-consumable electric arc furnace or a vacuum consumable electric arc furnace;
(3) vacuumizing, controlling the vacuum degree at 1X 10-3Adding voltage to adjust current for smelting between Pa and 1Pa, wherein the smelting times are more than or equal to two times;
(4) solidifying to obtain the multielement multi-scale reinforced titanium-based composite material.
2. The method for in situ synthesis of the multielement reinforced titanium-based composite material according to claim 1, wherein the in situ autogenous reinforcement is prepared by the following reaction:
3. the in situ synthesis method of multielement reinforced titanium-based composite material as claimed in claim 1, wherein the volume fraction and molar ratio of the reinforcing members and the composition of the matrix alloy are adjustable, and the total volume fraction of the reinforcing members is controlled within 30%.
4. The in situ synthesis method of multielement reinforced titanium-based composite material as claimed in claim 1, wherein the rare earth element is added as pure metal or as master alloy.
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100335668C (en) * | 2005-08-25 | 2007-09-05 | 上海交通大学 | Method for in situ synthesis of Re2O3 and TiB doped reinforced titanium base composite material |
| CN101921930A (en) * | 2010-09-16 | 2010-12-22 | 上海交通大学 | Multicomponent microalloyed titanium alloy and preparation method thereof |
| CN102409184A (en) * | 2011-10-31 | 2012-04-11 | 西部钛业有限责任公司 | Preparation method of pure nickel slab |
| CN103334045A (en) * | 2013-06-07 | 2013-10-02 | 昆明理工大学 | Laser combustion synthesized TiN-enhanced titanium-based composite material and method thereof |
| CN104561620A (en) * | 2015-02-13 | 2015-04-29 | 西安泰金工业电化学技术有限公司 | Preparation method of titanium alloy and use of titanium alloy |
| CN113388756A (en) * | 2021-06-25 | 2021-09-14 | 哈尔滨工业大学 | Preparation method of multi-element reinforced high-temperature titanium-based composite material |
| CN114277276A (en) * | 2021-12-24 | 2022-04-05 | 东莞理工学院 | Ti5Si3Preparation method of titanium-tantalum-based composite material reinforced by TiC particles and adjustable thermal expansion coefficient |
-
2004
- 2004-11-11 CN CN 200410068021 patent/CN1609048A/en active Pending
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100335668C (en) * | 2005-08-25 | 2007-09-05 | 上海交通大学 | Method for in situ synthesis of Re2O3 and TiB doped reinforced titanium base composite material |
| CN101921930A (en) * | 2010-09-16 | 2010-12-22 | 上海交通大学 | Multicomponent microalloyed titanium alloy and preparation method thereof |
| CN101921930B (en) * | 2010-09-16 | 2013-03-20 | 上海交通大学 | Multicomponent microalloyed titanium alloy and preparation method thereof |
| CN102409184A (en) * | 2011-10-31 | 2012-04-11 | 西部钛业有限责任公司 | Preparation method of pure nickel slab |
| CN103334045A (en) * | 2013-06-07 | 2013-10-02 | 昆明理工大学 | Laser combustion synthesized TiN-enhanced titanium-based composite material and method thereof |
| CN103334045B (en) * | 2013-06-07 | 2016-06-08 | 昆明理工大学 | A kind of laser combustion synthesis TiN strengthens titanium matrix composite and method thereof |
| CN104561620A (en) * | 2015-02-13 | 2015-04-29 | 西安泰金工业电化学技术有限公司 | Preparation method of titanium alloy and use of titanium alloy |
| CN113388756A (en) * | 2021-06-25 | 2021-09-14 | 哈尔滨工业大学 | Preparation method of multi-element reinforced high-temperature titanium-based composite material |
| CN114277276A (en) * | 2021-12-24 | 2022-04-05 | 东莞理工学院 | Ti5Si3Preparation method of titanium-tantalum-based composite material reinforced by TiC particles and adjustable thermal expansion coefficient |
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