Titanium-based composite material with two-stage net structures and preparation method of titanium-based composite material
A technology of titanium-based composite material and network structure, which is applied in the field of network-structured titanium-based composite material and its preparation, can solve problems such as limitation of reinforcement effect, and achieve the advantages of simple preparation method, strong controllability, and improvement of room temperature modulus. Effect
Inactive Publication Date: 2015-01-21
HARBIN INST OF TECH
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Problems solved by technology
However, the reinforcing phase prepared by this method is only distributed around the titanium powder particles to form a primary network structure (such as ZL200810136852.8, ZL200910071986.0), because the reinforcing phase is only distributed at the interface of the network structure; therefore, the improvement of the reinforcing effect subject to certain restrictions
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specific Embodiment approach 1
[0014] Specific implementation mode 1: In this embodiment, the two-stage network structure titanium-based composite material uses SiC as the reinforcement material, and uses the α+β dual-phase titanium alloy as the matrix; and has a two-stage network structure, and the first-level network structure is located Boundary, by TiC+Ti 3 SiC 2 Hybrid reinforcement is formed; the secondary network structure is located in the intragranular β phase, composed of Ti 5 Si 3 Ceramic phase composition.
specific Embodiment approach 2
[0015] Embodiment 2: The difference between this embodiment and Embodiment 1 is that the particle size of SiC is <1 μm. Others are the same as the first embodiment.
specific Embodiment approach 3
[0016] Embodiment 3: The difference between this embodiment and Embodiment 1 or 2 is that the α+β duplex titanium alloy is TC4, TC6, TC11 or TC17. Others are the same as the first or second embodiment.
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Abstract
The invention relates to a titanium-based composite material with two-stage net structures and a preparation method of the titanium-based composite material. According to the invention, the mechanical property of a non-continuous reinforced titanium-based composite material can be further improved. The titanium-based composite material with the two-stage net structures uses SiC as a reinforcement raw material and uses an alpha and belta double-phase titanium alloy as a matrix. The preparation method comprises the following steps: 1, powder mixing by a ball mill; 2, hot pressing sintering. According to the (TiC,Ti3SiC2 and Ti5Si3)/Ti titanium-based composite material with the two-stage net structures,disclosed by the invention, a hard ceramic reinforcement is successfully introduced into a softer beta phase in a netted form to form the titanium-based composite material with the two-stage net structures, so that a room temperature modulus, intensity and heat resistance of the titanium-based composite material are further improved and the reinforcing effect of the net structures is sufficiently played.
Description
technical field [0001] The invention relates to a mesh-structured titanium-based composite material and a preparation method thereof. Background technique [0002] Titanium alloys are widely used in aviation, aerospace, navigation, automobiles, weapons and other fields due to their unique properties. However, limited by its own organizational structure, its wear resistance, heat resistance and strength need to be further improved. In recent years, discontinuously reinforced titanium matrix composites (Discontinuously Reinforced Titanium Matrix Composites, DRTMCs) obtained by introducing ceramic reinforcement phases into the titanium alloy matrix in different ways have attracted widespread attention. Compared with titanium alloys, DRTMCs exhibit better strength, modulus, wear resistance, heat resistance and service temperature. However, using powder metallurgy to prepare titanium-based composites with completely and evenly distributed reinforcing phases is not only costly, ...
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IPC IPC(8): C22C1/05C22C14/00
Inventor 黄陆军刘辰焦阳耿林陆成杰段天博王博
Owner HARBIN INST OF TECH
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