Beryllium aluminum alloy discharging plasma sintering preparation method
A technology of discharge plasma and discharge plasma, which is applied in the field of metallurgical manufacturing of non-ferrous metal materials, can solve the problems of difficult densification, high sintering temperature, and long sintering time, and achieve the effect of fine structure, low sintering temperature and simple process
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specific Embodiment approach 1
[0027] The preparation method of beryllium aluminum alloy of this implementation, carries out according to the following steps:
[0028] 1. Raw material mixing: use high-energy ball mill to mix beryllium powder and aluminum alloy powder according to the designed composition ratio;
[0029] 2. Cold isostatic pressing: Put the composite material powder into a soft film mold of a certain shape, and cold-press the billet with a certain density and strength by cold isostatic pressing. The cold isostatic pressing pressure is 50-250MPa. Pressure holding time 10-20min;
[0030] 3. Discharge plasma sintering: put the cold compact into the designed mold, then put it into the SPS furnace body, and evacuate to 1.0×10 -2 Pa, the sintering temperature is 500-600°C, the heating rate is 50-100°C / min, the sintering pressure is 20-50MPa, and the holding time is 5-10min.
specific Embodiment approach 2
[0031] The difference between this embodiment and specific embodiment 1 is: the discharge plasma preparation method of a beryllium aluminum alloy is characterized in that the beryllium aluminum alloy raw material powder is beryllium powder and aluminum alloy powder, and the beryllium content is 30% -70wt%, others are the same as the specific embodiment one.
specific Embodiment approach 3
[0032] The difference between this embodiment and specific embodiment 1 or 2 is that in the discharge plasma preparation method of a beryllium aluminum alloy, the raw material aluminum alloy powder is 1XXX series, 2XXX series, 6XXX series, 7XXX series aluminum alloy powder, and the particle size is 5-20μm. The particle size of beryllium powder is 5-20μm. Others are the same as those in Embodiment 1 or 2.
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