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Endogenous ductile phase reinforced ti-based amorphous composite material and preparation method thereof

An amorphous composite material and a composite material technology, which is applied to the design and preparation of an endogenous toughness β-Ti solid solution reinforced Ti-based amorphous composite material, can solve problems such as poor plasticity and toughness, and achieve the effect of a simple preparation process.

Active Publication Date: 2016-01-06
INST OF METAL RESEARCH - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is to provide a design and preparation method of Ti-based amorphous composite materials reinforced by endogenous toughness β-Ti solid solution, so as to solve the problems of poor plasticity and toughness in Ti-based amorphous alloys.

Method used

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  • Endogenous ductile phase reinforced ti-based amorphous composite material and preparation method thereof
  • Endogenous ductile phase reinforced ti-based amorphous composite material and preparation method thereof
  • Endogenous ductile phase reinforced ti-based amorphous composite material and preparation method thereof

Examples

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Embodiment 1

[0029] The alloy composition of Ti-based amorphous composites is Ti 44.3 Zr 32.7 Ni 3.2 Cu 6.2 be 13.6 (Atomic percentage), denoted as AT340. The Ti and Zr in the raw materials are sponge Ti and sponge Zr with industrial purity, and the purity of the other elements Cu, Ni and Be is higher than 99.8wt%. The master alloy ingot was prepared by smelting. In order to ensure the uniformity of the smelted alloy ingot, the alloy ingot was repeatedly smelted four times. 10g of the master alloy ingot was induction melted in an inert gas atmosphere, and spray-cast into a hole with a diameter of 5mm in a copper mold to obtain a quenched sample with a diameter of 5mm.

[0030] Depend on figure 1 and figure 2 Visible, Ti 44.3 Zr 32.7 Ni 3.2 Cu 6.2 be 13.6 It is a β-Ti solid solution reinforced Ti-based amorphous composite material with a crystallization enthalpy of -32.77J / g. In the β-Ti solid solution reinforced Ti-based amorphous composite material of this embodiment, the si...

Embodiment 2

[0035] The difference from Example 1 is that the alloy composition of the Ti-based amorphous composite material is Ti 45.7 Zr 33.0 Ni 2.9 Cu 5.9 be 12.5 (Atomic percentage), denoted as AT345.

[0036] Ti 45.7 Zr 33.0 Ni 2.9 Cu 5.9 be 12.5The alloy is β-Ti solid solution reinforced Ti-based amorphous composite material. In the β-Ti solid solution reinforced Ti-based amorphous composite material of this embodiment, the size of the β-Ti solid solution is 2-5 μm, and the volume fraction is about 45%. The compressive yield strength of the composite material is 1500-1600MPa, the compressive breaking strength is 1700-2100MPa, the compressive strain is 5±2%, the tensile yield strength is 1400MPa, the tensile breaking strength is 1500MPa, and the tensile strain is 4±2%.

Embodiment 3

[0038] The difference from Example 1 is that the alloy composition of the Ti-based amorphous composite material is Ti 35.7 Zr 30.8 Ni 4.8 Cu 8.3 be 20.4 (atomic percentage), denoted as AT310. Depend on figure 1 It can be seen that the quenched Ti with a diameter of 5mm 35.7 Zr 30.8 Ni 4.8 Cu 8.3 be 20.4 The alloy structure is pure amorphous structure, and the crystallization enthalpy value is -56.54J / g.

[0039] In this embodiment, the properties of the Ti-based amorphous composite material alloy: the compressive yield strength is 1780 MPa, the compressive fracture strength is 1790 MPa, and the compressive strain is about 2%.

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Abstract

The invention relates to the field of Ti-based amorphous composite materials, in particular to the design and preparation method of endogenous toughness β-Ti solid solution reinforced Ti-based amorphous composite materials. The composition of the composite material is (atomic percentage) TiaAbBcBed, wherein: A is one or several elements of Zr, Nb, Ta, Mo, V, and W, and B is one or several elements of Cu, Ni, Fe, and Co. species, a=30-65; b=26-38; c=1-25; d=0-25. The toughness β-Ti solid solution reinforced Ti-based amorphous composite material with different volume fractions is obtained by adjusting the alloy composition, the size of the β-Ti solid solution is 1-200 μm, and the volume fraction is 0-100. The composite material exhibits excellent comprehensive mechanical properties, and has a certain degree of plastic deformation behavior while having high strength. The compressive yield strength is 1000-1900MPa, the compressive breaking strength is 1200-2300MPa, and the compressive strain is 2-20%; the tensile yield strength of the composite material is 1000-1900MPa, the tensile breaking strength is 1200-2000MPa, and the tensile strain is 2 -20%. It plays an important role in the application of Ti-based amorphous composite materials.

Description

technical field [0001] The invention relates to the field of Ti-based amorphous composite materials, in particular to the design and preparation method of endogenous toughness β-Ti solid solution reinforced Ti-based amorphous composite materials. Background technique [0002] Ti-based amorphous alloys have excellent mechanical properties, low density, and relatively low cost, and are currently one of the hotspots in the field of amorphous research. In the past few decades, scholars from various countries have conducted a lot of research on Ti-based amorphous alloys, and great progress has been made in the research on the ability of amorphous formation. However, the deformation of amorphous alloys is a highly localized deformation, and the deformation is mainly concentrated in a few limited shear bands. Although the relative deformation in the shear bands is large, the plasticity of the amorphous alloy as a whole The amount of deformation is very limited, and this intrinsic ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C45/10
Inventor 张海峰唐明强付华萌朱正旺王爱民李宏胡壮麒
Owner INST OF METAL RESEARCH - CHINESE ACAD OF SCI
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