A kind of low-cost high room temperature plastic deformation magnesium alloy and its preparation method
A plastic deformation and magnesium alloy technology, applied in the field of metal materials and metal material processing, can solve the problems of high cost, insufficient plasticity at room temperature, and harsh processing technology requirements, so as to avoid generation, low cost of raw materials and processing, and suppress size Effect
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Embodiment 1
[0045] (1) Design and select Mg-2.5Bi-2.5Sn-1Zr-0.4Ca-0.03Y (wt%) alloy composition ratio to form a magnesium alloy. The preparation method includes the following steps:
[0046] 1) Ingredients: Use pure Mg (99.8wt%) ingot, pure Bi (99wt%) block, pure Sn (99wt%) block, Mg-30Zr, Mg-20Ca and Mg-30Y master alloy as raw materials, after surface pretreatment (such as removal of dirt, scale, etc., the same as in the following examples), according to the above-mentioned target ingredients for batching; wherein, the mass ratio is Bi:Ca=6.25:1.
[0047] 2) Melting: Clean and preheat the crucible, put the magnesium ingot preheated to 200°C into the crucible of the melting furnace, set the furnace temperature to 720°C, and heat slowly at a heating rate of 25°C / min. After it melts, add the pure Bi block preheated to 50°C, pure Sn block, pure Zn block, and Mg-30Zr, Mg-20Ca master alloy and Mg-30Y master alloy preheated to 200°C into the magnesium melt in the liquid; raise the melting temp...
Embodiment 2
[0055] (1) Design and select the Mg-3Bi-3Sn-1Zr-0.5Ca-0.04Y (wt%) alloy composition ratio to form a magnesium alloy. The preparation method includes the following steps:
[0056] 1) Ingredients: Use pure Mg (99.8wt%) ingot, pure Bi (99wt%) block, pure Sn (99wt%) block, Mg-30Zr, Mg-20Ca and Mg-30Y master alloy as raw materials, after surface pretreatment (such as removal of dirt, scale, etc., the same as in the following examples), carry out batching according to the above-mentioned target components; mass ratio Bi:Ca=6:1.
[0057] 2) Melting: Clean and preheat the crucible, put the magnesium ingot preheated to 200°C into the crucible of the melting furnace, set the furnace temperature to 720°C, and heat slowly at a heating rate of 25°C / min. After it melts, add the pure Bi block preheated to 50°C, pure Sn block, pure Zn block, and Mg-30Zr, Mg-20Ca master alloy and Mg-30Y master alloy preheated to 200°C into the magnesium melt In liquid; raise the melting temperature to 750°C, ...
Embodiment 3
[0065] (1) Design and select the Mg-4Bi-4Sn-1Zr-0.6Ca-0.05Y (wt%) alloy composition ratio to form a magnesium alloy. The preparation method comprises the following steps:
[0066] 1) Ingredients: Use pure Mg (99.8wt%) ingot, pure Bi (99wt%) block, pure Sn (99wt%) block, Mg-30Zr, Mg-20Ca and Mg-30Y master alloy as raw materials, after surface pretreatment (As removal of dirt, scale etc., the following examples are the same), carry out batching according to the above-mentioned target components; mass ratio Bi:Ca=6.67:1.
[0067] 2) Melting: Clean and preheat the crucible, put the magnesium ingot preheated to 200°C into the crucible of the melting furnace, set the furnace temperature to 720°C, and heat slowly at a heating rate of 25°C / min. After it melts, add the pure Bi block preheated to 50°C, pure Sn block, pure Zn block, and Mg-30Zr, Mg-20Ca master alloy and Mg-30Y master alloy preheated to 200°C into the magnesium melt In liquid; raise the melting temperature to 750°C, keep...
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