A method for two-pass secondary equal channel corner cold extrusion of high strength and toughness titanium alloy
A technology of equal channel angle and tough titanium alloy, applied in the field of material processing, can solve problems such as shear fracture, reduce friction resistance, improve plastic deformation ability, and reduce interference factors.
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Embodiment 1
[0032] This embodiment includes the following steps:
[0033] Step 1: Load the solid solution Ti-1300 alloy bar from the bottom of the 1060 industrial pure aluminum sheath and inlay it inside the 1060 industrial pure aluminum sheath to obtain an extruded billet with an arc-shaped head, such as Figure 1a and Figure 1b As shown; the size of the Ti-1300 alloy rod is: 8.7mm×8.7mm×85mm, the size of the extrusion billet is: 12.7mm×12.7mm×90mm; the room temperature of the Ti-1300 alloy rod The yield strength is 1310MPa, the tensile strength is 1370MPa, the elongation is 17%, and the fracture toughness is 55MPa m 1 / 2 ;
[0034] Step 2. Spread the lubricant evenly on the surface of the extruded billet obtained in Step 1, then let it stand in the air for 1 hour, then wrap it with graphite paper, put it into a channel with a corner angle of 90° and a corner arc of 20°, etc. channel in an angular extrusion die; the lubricant consists of graphite milk and MoS 2 Prepared by magnetic st...
Embodiment 2
[0042] This embodiment includes the following steps:
[0043] Step 1. Load the annealed Ti-1300 alloy bar from the bottom of the T2 industrial pure copper sheath and inlay it inside the T2 industrial pure copper sheath to obtain an extruded billet with an arc-shaped head, such as Figure 1a and Figure 1b As shown; the size of the Ti-1300 alloy rod is: 8.7mm×8.7mm×85mm, the size of the extrusion billet is: 12.7mm×12.7mm×90mm; the room temperature of the Ti-1300 alloy rod The yield strength is 1039MPa, the tensile strength is 1078MPa, the elongation is 20.5%, and the fracture toughness is 72MPa m 1 / 2 ;
[0044] Step 2. Spread the lubricant evenly on the surface of the extruded billet obtained in Step 1, then let it stand in the air for 2 hours, then wrap it with graphite paper, and put it into a channel with a corner angle of 90° and a corner arc of 20°, etc. channel in an angular extrusion die; the lubricant consists of graphite milk and MoS 2 It is prepared by magnetic sti...
Embodiment 3
[0048] This embodiment includes the following steps:
[0049] Step 1: Load the annealed Ti-1300 alloy bar from the bottom of the 1060 industrial pure aluminum sheath and inlay it inside the 1060 industrial pure aluminum sheath to obtain an extruded billet with an arc-shaped head, such as Figure 1a and Figure 1b As shown; the size of the Ti-1300 alloy rod is: 8.7mm×8.7mm×85mm, the size of the extrusion billet is: 12.7mm×12.7mm×90mm; the room temperature of the Ti-1300 alloy rod The yield strength is 1039MPa, the tensile strength is 1078MPa, the elongation is 20.5%, and the fracture toughness is 72MPa m 1 / 2 ;
[0050] Step 2: Spread the lubricant evenly on the surface of the extruded billet obtained in Step 1, then let it stand in the air for 3 hours, then wrap it with graphite paper, put it into a channel with a corner angle of 90° and a corner arc of 20°, etc. channel in an angular extrusion die; the lubricant consists of graphite milk and MoS 2 Prepared by magnetic stirr...
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Abstract
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