CN105401104A - High-strength bulk Cu-Zr-Zn metallic glass and preparation method - Google Patents

Abstract

The invention relates to high-strength bulk Cu-Zr-Zn metallic glass and a preparation method. The atomic feature proportion of the Cu-Zr-Zn metallic glass is Cu43Zr43Zn14. The Cu43Zr43Zn14 metallic glass prepared through the rapid solidification preparation method has high yield strength (1815+/-10 MPa), high breaking strength (1840+/-10 MPa), large elastic limit and large plastic strain (0.1+/-0.02).

Description

High strength block Cu-Zr-Zn metallic glass and preparation method

Technical field

The invention belongs to metallic glass and preparation method, be specifically related to a kind of high strength block Cu-Zr-Zn metallic glass and preparation method.

Background technology

Metallic glass (MetaliicGlass, MG) is also called non-crystaline amorphous metal (AmorphousAlloy), and it is cooled fast continuously by alloy melt to obtain, and have a class solid material of metal and glass performance.Block metal glass (BulkMetaliicGlass, BMG) typically refers to the metallic glass of three-dimensional dimension all more than millimeter.

Non-crystaline amorphous metal atomic structure has the feature of longrange disorder, short range order, does not possess the defects such as the dislocation in conventional crystal material.This makes it show the mechanical property of many excellences, as superstrength and fracture toughness property, high rigidity, low elastic modulus, unique deformation and fracture behaviour etc.Block metal glass be find up to now the most by force, the most firmly, the most tough the most soft structural metallic materials.Based on the character of these excellences, amorphous alloy all has broad application prospects in aerospace, weapon industry, precision instrument and biologic medical etc., has very high scientific value and using value, therefore causes the extensive concern of people in recent years.

Summary of the invention

The technical problem solved

In order to avoid the deficiencies in the prior art part, the present invention proposes a kind of high strength block Cu-Zr-Zn metallic glass and preparation method, solves Zn and has high volatile volatile due to during melting, needs constantly to allocate component proportions and the problem finding desirable casting parameter.

Technical scheme

A kind of high strength block Cu-Zr-Zn metallic glass, is characterized in that: the atomic features proportioning of metallic glass is Cu ₄₃zr ₄₃zn ₁₄.

The purity of described each multicomponent metallic is greater than 99.99%.

A preparation method for described high strength block Cu-Zr-Zn metallic glass, is characterized in that step is as follows:

Step 1: according to the atomic features proportioning Cu of block Cu-Zr-Zn metallic glass alloys ₅₀zr ₅₀, take each multicomponent metallic and be positioned in electric arc furnace water cooled crucible

Step 2: electric arc furnace is evacuated to vacuum tightness 5 × 10 ^-5pa, then instead fills Ar gas to one normal atmosphere that purity is 99.999%;

Step 3: open electric arc furnace and be heated to more than the alloy melting point that step 1 prepares, after alloy pig cooling, use mechanical manipulator to overturn sample, melting again, repeats to make for 3-4 time alloy mix and obtains Cu ₅₀zr ₅₀mother alloy;

Step 4: mother alloy is removed surface scale, with Cu ₅₀zr ₅₀mother alloy and high-purity Zn press atomic features proportioning Cu ₄₃zr ₄₃zn ₁₄prepare burden;

Step 5: by the Cu prepared ₅₀zr ₅₀mother alloy and high-purity Zn put into high vacuum high-frequency induction melting-blow the quartz test tube casting stove;

Step 6: high vacuum high-frequency induction melting-blow casting stove is evacuated to vacuum tightness 5 × 10 ^-5pa, then instead fills Ar gas to one normal atmosphere that purity is 99.999%;

Step 7: open induction power supply and carry out melting, when melt melts fully to time orange red, powered-down; Be cooled to room temperature to take out, break into pieces after scale removal and be again placed in silica tube; Again repeat this process;

Step 8: after induction melting is abundant, blows casting to water cooled copper mould by melt through silica tube pipe aperture and obtains block Cu ₄₃zr ₄₃zn ₁₄metallic glass.

The block Cu that described step 8 obtains ₄₃zr ₄₃zn ₁₄the diameter of metallic glass is 2mm.

Beneficial effect

A kind of high strength block Cu-Zr-Zn metallic glass that the present invention proposes and preparation method, the atomic features proportioning of Cu-Zr-Zn metallic glass is Cu ₄₃zr ₄₃zn ₁₄, have employed the Cu that rapid solidification preparation method is obtained ₄₃zr ₄₃zn ₁₄metallic glass has higher yield strength (1815 ± 10MPa), breaking tenacity (1840MPa ± 10MPa), large elastic limit and plastix strain (0.1 ± 0.02).

Accompanying drawing explanation

Fig. 1 is Cu ₄₃zr ₄₃zn ₁₄the light microscopic figure (OM) of metallic glass;

Fig. 2 is Cu ₄₃zr ₄₃zn ₁₄the XRD diffractogram of metallic glass;

Fig. 3 is Cu ₄₃zr ₄₃zn ₁₄the room temperature mechanics stress under compression strain curve figure of metallic glass.

Embodiment

Now in conjunction with the embodiments, the invention will be further described for accompanying drawing:

Embodiment 1:

Step 1: preparation Cu ₄₃zr ₄₃zn ₁₄sample 5g, then take pure Cu1.8047g, pure Zr2.5907g, and proportioning is good as in polishing clean water cold crucible;

Step 2: electric arc furnace is evacuated to vacuum tightness 5 × 10 ^-5pa, then instead fills Ar gas to one normal atmosphere that purity is 99.999%;

Step 3: open electric arc furnace and be heated to more than the alloy melting point that step 1 prepares, alloy pig is overturn, again melting, repeat 3 times alloy to be mixed and obtain Cu ₅₀zr ₅₀mother alloy;

Step 4: mother alloy is removed surface scale and breaks into pieces, takes pure Zn0.6046g, is mixed;

Step 5: the quartz test tube putting into high vacuum high-frequency induction melting-blow casting stove;

Step 6: high vacuum high-frequency induction melting-blow casting stove is evacuated to vacuum tightness 5 × 10 ^-5pa, then instead fills Ar gas to one normal atmosphere that purity is 99.999%;

Step 7: open induction power supply, abundant melting.Be cooled to room temperature to take out, break into pieces after scale removal and be again placed in silica tube; Again repeat this process;

Step 8: after induction melting is abundant, blows casting to water cooled copper mould by melt through silica tube pipe aperture and obtains the Cu that diameter is 2mm ₄₃zr ₄₃zn ₁₄metallic glass.

Embodiment 2:

Step 1: preparation Cu ₄₃zr ₄₃zn ₁₄sample 5g, then take pure Cu1.8047g, pure Zr2.5907g, and proportioning is good as in polishing clean water cold crucible;

Step 2: electric arc furnace is evacuated to vacuum tightness 5 × 10 ^-5pa, then instead fills Ar gas to one normal atmosphere that purity is 99.999%;

Step 3: open electric arc furnace and be heated to more than the alloy melting point that step 1 prepares, alloy pig is overturn, again melting, repeat 4 times alloy to be mixed and obtain Cu ₅₀zr ₅₀mother alloy;

Step 4: mother alloy is removed surface scale and breaks into pieces, takes pure Zn0.6046g, is mixed;

Step 5: the quartz test tube putting into high vacuum high-frequency induction melting-blow casting stove;

Step 6: high vacuum high-frequency induction melting-blow casting stove is evacuated to vacuum tightness 5 × 10 ^-5pa, then instead fills Ar gas to one normal atmosphere that purity is 99.999%;

Step 7: open induction power supply, abundant melting.Be cooled to room temperature to take out, break into pieces after scale removal and be again placed in silica tube; Again repeat this process;

Step 8: after induction melting is abundant, blows casting to water cooled copper mould by melt through silica tube pipe aperture and obtains the Cu that diameter is 2mm ₄₃zr ₄₃zn ₁₄metallic glass.

High strength block Cu-Zr-Zn metallic glass of the present invention mechanical property parameters as following table

Claims (4)

1. a high strength block Cu-Zr-Zn metallic glass, is characterized in that: the atomic features proportioning of metallic glass is Cu ₄₃zr ₄₃zn ₁₄.

2. high strength block Cu-Zr-Zn metallic glass according to claim 1, is characterized in that: the purity of described each multicomponent metallic is greater than 99.99%.

3. a preparation method for high strength block Cu-Zr-Zn metallic glass described in claim 1 or 2, is characterized in that step is as follows:

Step 1: according to the atomic features proportioning Cu of block Cu-Zr-Zn metallic glass alloys ₅₀zr ₅₀, take each multicomponent metallic and be positioned in electric arc furnace water cooled crucible

Step 2: electric arc furnace is evacuated to vacuum tightness 5 × 10 ^-5pa, then instead fills Ar gas to one normal atmosphere that purity is 99.999%;

Step 3: open electric arc furnace and be heated to more than the alloy melting point that step 1 prepares, after alloy pig cooling, overturns alloy pig, again melting, repeats to make for 3-4 time alloy mix and obtain Cu ₅₀zr ₅₀mother alloy;

Step 4: mother alloy is removed surface scale, with Cu ₅₀zr ₅₀mother alloy and high-purity Zn press atomic features proportioning Cu ₄₃zr ₄₃zn ₁₄prepare burden;

Step 5: by the Cu prepared ₅₀zr ₅₀mother alloy and high-purity Zn put into high vacuum high-frequency induction melting-blow the quartz test tube casting stove;

Step 6: high vacuum high-frequency induction melting-blow casting stove is evacuated to vacuum tightness 5 × 10 ^-5pa, then instead fills Ar gas to one normal atmosphere that purity is 99.999%;

Step 7: open induction power supply and carry out melting, when melt melts fully to time orange red, powered-down; Be cooled to room temperature to take out, break into pieces after scale removal and be again placed in silica tube; Again repeat this process;

Step 8: after induction melting is abundant, blows casting to water cooled copper mould by melt through silica tube pipe aperture and obtains block Cu ₄₃zr ₄₃zn ₁₄metallic glass.

4. the preparation method of high strength block Cu-Zr-Zn metallic glass according to claim 3, is characterized in that: the block Cu that described step 8 obtains ₄₃zr ₄₃zn ₁₄the diameter of metallic glass is 2mm.