A high-density zirconium-based bulk amorphous alloy casting with a weight of more than a kilogram and its casting method
An amorphous alloy, kilogram-level technology, applied in the field of high-density zirconium-based bulk amorphous alloy castings and its casting, can solve the problem of reducing the formation ability of amorphous alloys, high viscosity of non-gold alloy melts, and slow melt temperature rise and other issues, to achieve the effect of ensuring the ability of amorphous formation, high yield and low cost
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Embodiment 1
[0068] (1) Melting system inspection and preparation: First, turn on the circulating cooling water system of the vacuum induction melting furnace, check whether the water circuit is smooth or leaking, and turn on the power of the diffusion pump to preheat the diffusion pump. The preheating time is 40 minutes.
[0069] (2) Placing the mold and charging: Open the furnace cover of the vacuum induction melting furnace, and make industrial red copper such as Figure 5 The two round tube moulds shown are put together and fastened and placed in a Figure 8 In a fixed position in the vacuum induction melting furnace shown, a graphite sprue cup is placed at the sprue port of the casting mold; then 4.7 kg of Zr is charged into the high-purity graphite crucible with anti-pollution surface treatment 41.2 Ti 13.8 Cu 12.5 Ni 10 Be 22.5 For the charge of the alloy composition, after the charge is loaded, close the furnace cover and check whether all valves are closed; the surface anti-po...
Embodiment 2
[0076] The casting method is basically the same as that of Example 1, except that the pouring temperature is adjusted from "900°C" to "1000°C" to obtain a zirconium-based bulk amorphous alloy round tube casting.
[0077] Due to the increase of the casting temperature in Example 2, although the filling is not complete, the filling ability of Example 1 is improved, such as Figure 9 The actual round pipe shown in Example 2 marked in .
[0078] Samples were taken on the obtained round tube castings and their structural characteristics were tested by X-ray diffraction analyzer (XRD) (see Figure 14 In Example 2), it is judged whether the obtained casting is an amorphous alloy. See the experimental results of Example 2 in Table 1 and Table 2 for the results of the density test and the compressive mechanical property test.
Embodiment 3
[0080] The casting method is basically the same as that of Example 1, except that the pouring temperature is adjusted from "900° C." to "1100° C." to obtain a zirconium-based bulk amorphous alloy round tube casting.
[0081] Due to the appropriate casting temperature in Example 3, a qualified round tube casting with complete filling and clear shape was obtained, such as Figure 9 The actual round pipe shown in Example 3 marked in .
[0082] Samples were taken on the obtained round tube castings and their structural characteristics were tested by X-ray diffraction analyzer (XRD) (see Figure 14 In Example 3), it is judged whether the obtained casting is an amorphous alloy. See the experimental results of Example 3 in Table 1 and Table 2 for the results of the density test and the compressive mechanical property test.
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