Deformation-driven solid-phase extrusion device and one-step alloy bar preparation method by using same

A one-step alloy bar preparation method by using a deformation-driven solid-phase extrusion device,

• the deformation-driven solid-phase extrusion device comprising a stir tool, an extrusion container and an ejector rod, wherein the stir tool has an integral structure composed of an upper mounting part and a lower working part and having a hollow channel;
• an anti-drag groove is formed in an outer surface of the lower working part;
• the lower working part is disposed in a groove of the extrusion container;
• and the ejector rod is disposed in the hollow channel of the stir tool;
• the method comprising following steps of:
• adding alloy powder to the extrusion container;
• setting a rotating speed of the stir tool to a range of 50 rpm to 10000 rpm, setting a pressing speed of the stir tool to a range of 0.1 mm/min to 10 mm/min and an upsetting pressure of the ejector rod to a range of 5 MPa to 50 MPa;
• simultaneously performing operations of exerting the upsetting pressure with the range of 5 MPa to 50 MPa on the ejector rod, and enabling the stir tool to revolve at the rotating speed with the range of 50 rpm to 10000 rpm and to be pressed downwards at the pressing speed with the range of 0.1 mm/min to 10 mm/min, so as to sinter the alloy powder in the extrusion container to produce sintered products and extrude the sintered products through the hollow channel of the stir tool against the upsetting pressure on the ejector rod, such that one-step deformation-driven solid-phase extrusion is carried out to obtain the alloy bar.