Method for preparing Fe-Al-Ta multifunctional integrated material through Bridgeman directional solidification technology
A fe-al-ta, directional solidification technology, applied in the field of metallurgy, can solve the problems of low utilization rate, single performance, poor performance, etc., and achieve the effect of prolonging the service life and improving the utilization rate
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Embodiment 1
[0040] 1) Fix the corundum tube on the pull rod, and then put the wire-cut test rod into it to ensure that the corundum tube and the test rod are located in the center of the graphite sleeve. Turn on the mechanical pump and the molecular pump in turn to evacuate until the vacuum degree is 4.0×10 -2 At Pa, adjust the heating power step by step to 2.5Kw, 5Kw and 7Kw. During the heating period, when the composite vacuum count value drops to 0, turn off the molecular pump and the mechanical pump in sequence. After heating for 20 minutes, follow the set drawing rate and drawing stroke (pumping The pulling rate is the rate at which the sample moves downward into the cooling liquid, such as 6 μm / s; the pulling stroke refers to the distance of the downward movement) for pulling. Turn off the heating power after the drawing is completed, and turn off the circulating water after 30 minutes to cool down with the furnace. After 90 minutes, the directionally solidified sample is completely...
Embodiment 2
[0043] 1) Fix the corundum tube on the pull rod, and then put the wire-cut test rod into it to ensure that the corundum tube and the test rod are located in the center of the graphite sleeve. Turn on the mechanical pump and the molecular pump in turn to evacuate until the vacuum degree is 4.0×10 -2 At Pa, adjust the heating power step by step to 2.5Kw, 5Kw, and 7Kw. During the heating period, when the composite vacuum count value drops to 0, turn off the molecular pump and the mechanical pump in sequence. After heating for 20 minutes, pump according to the set pulling rate and pulling stroke. pull. Turn off the heating power after the drawing is completed, and turn off the circulating water after 30 minutes to cool down with the furnace. After 90 minutes, the directionally solidified sample is completely cooled and can be taken out of the furnace.
[0044] 2) When the material is required to be excellent in plasticity, toughness and fatigue resistance when it is in service, i...
Embodiment 3
[0046] 1) Fix the corundum tube on the pull rod, and then put the wire-cut test rod into it to ensure that the corundum tube and the test rod are located in the center of the graphite sleeve. Turn on the mechanical pump and the molecular pump in turn to evacuate until the vacuum degree is 4.0×10 -2 At Pa, adjust the heating power step by step to 2.5Kw, 5Kw, and 7Kw. During the heating period, when the composite vacuum count value drops to 0, turn off the molecular pump and the mechanical pump in sequence. After heating for 20 minutes, pump according to the set pulling rate and pulling stroke. pull. Turn off the heating power after the drawing is completed, and turn off the circulating water after 30 minutes to cool down with the furnace. After 90 minutes, the directionally solidified sample is completely cooled and can be taken out of the furnace.
[0047] 2) When the material is in service and requires excellent wear resistance and strength, it is directional solidified at a...
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