Post-treatment method for hot-pressing sintered titanium diboride reinforced copper-based composite
A copper-based composite material and hot-press sintering technology, which is applied in the field of post-processing of hot-pressed sintered titanium diboride reinforced copper-based composite materials, can solve problems such as insufficient strengthening effect, and achieve increased strength and hardness, strength and elongation Improvement, conductivity and hardness enhancement effect
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Embodiment 1
[0036] Step 1, Cu powder, TiH 2 Powder and B powder are mixed and pressed, then subjected to atmosphere protection high-temperature hot-press sintering to prepare TiB 2 - Cu composite material;
[0037] Among them, Cu powder, TiH 2 The mass ratio of powder and B powder is 203.70:4.52:1.95. Prepared TiB 2 -Cu composite material specification is Ф35mm×25mm.
[0038] Step 2, hot extrusion:
[0039] TiB obtained in step 1 2 The -Cu composite material was placed in a box-type resistance furnace and heated at 900°C for 25 minutes, and then put into an extrusion barrel for hot extrusion. During hot extrusion, the temperature of the extrusion barrel was kept at 350°C, and the extrusion ratio was 6.25.
[0040] Step 3, cold rolling:
[0041] To the TiB after step 2 thermal extrusion 2 The -Cu composite material is subjected to multi-pass cold rolling, and the deformation of the cold rolling is controlled to be 50%.
[0042] Step 4, electric pulse treatment:
[0043] To the Ti...
Embodiment 2
[0046] Step 1, Cu powder, TiH 2 Powder and B powder are mixed and pressed, then subjected to atmosphere protection high-temperature hot-press sintering to prepare TiB 2 - Cu composite material;
[0047] Among them, Cu powder, TiH 2 The mass ratio of powder and B powder is 203.70:4.52:1.95. Prepared TiB 2 -Cu composite material specification is Ф35mm×25mm.
[0048] Step 2, hot extrusion:
[0049] TiB obtained in step 1 2The -Cu composite material was placed in a box-type resistance furnace and heated at 910°C for 28 minutes, and then put into an extrusion barrel for hot extrusion. During hot extrusion, the temperature of the extrusion barrel was kept at 380°C, and the extrusion ratio was 8.51.
[0050] Step 3, cold rolling:
[0051] To the TiB after step 2 thermal extrusion 2 The -Cu composite material is subjected to multi-pass cold rolling, and the deformation of the cold rolling is controlled to be 60%.
[0052] Step 4, electric pulse treatment:
[0053] To the TiB...
Embodiment 3
[0056] Step 1, Cu powder, TiH 2 Powder and B powder are mixed and pressed, then subjected to atmosphere protection high-temperature hot-press sintering to prepare TiB 2 - Cu composite material;
[0057] Among them, Cu powder, TiH 2 The mass ratio of powder and B powder is 203.70:4.52:1.95. Prepared TiB 2 -Cu composite material specification is Ф35mm×25mm.
[0058] Step 2, hot extrusion:
[0059] TiB obtained in step 1 2 The -Cu composite material was placed in a box-type resistance furnace and heated at 950°C for 30 minutes, and then put into an extrusion barrel for hot extrusion. During hot extrusion, the temperature of the extrusion barrel was kept at 400°C, and the extrusion ratio was 12.3.
[0060] Step 3, cold rolling:
[0061] To the TiB after step 2 thermal extrusion 2 -Cu composite material is subjected to multi-pass cold rolling, and the deformation of cold rolling is controlled to be 75%.
[0062] Step 4, electric pulse treatment:
[0063] To the TiB after ...
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