The invention belongs to the technical field of the quantitative statistical distribution analysis of the features from characteristic images of microstructures and precipitated phases in metal materials, and relates to a quantitative statistical distribution characterization method of precipitate particles with the full field of view in a metal material. The method comprises the following steps of electrolytic corrosion of a metallic material specimen, automatic collection of characteristic images of microstructure, automatic stitching and fusion of the full-view-field microstructure images, automatic identification and segmentation of the precipitate particles and quantitative distribution characterization of the precipitate particles with the full field of view in a large-range scale. By establishing a mathematic model, the large-range automatic stitching and fusion of the characteristic images of the full-view-field microstructures in a characteristic region and the automatic segmentation and identification of the precipitate particles are realized; and the quantitative statistical distribution characterization information of the full-view-field morphology, quantity, size, distribution and the like of plentiful precipitated phases in a larger range is quickly obtained. The method has the features of being accurate, high-efficiency and informative in quantitative distribution characterization, as well as has much more statistical representativeness compared with conventional single-view-field quantitative image analysis.

In a method and a device for electrolytically polishing inner surfaces of a recess in a workpiece made of metal, in particular a workpiece printed in three dimensions, provision is made that a cathode is introduced into the recess and polishes the inner surface of the recess using an electrolyte having a slow diffusion rate.

In a method and a device for electrolytically polishing inner surfaces of a recess in a workpiece made of metal, in particular a workpiece printed in three dimensions, provision is made that a cathode is introduced into the recess and polishes the inner surface of the recess using an electrolyte having a slow diffusion rate.

The invention relates to a removable electro-mechanical device for burnishing and smoothing metal parts, said device comprising: a tank (2) containing an electrolytic solution and the cathode (c); a main body (3) which closes the tank (2), and in which the electrical contacts (6), the mechanical components and the drive systems (5) are incorporated, said drive systems being located in the lower portion of the main body (3) and being vertically and radially secured to a part (7) such that, in addition, when said body (3) is coupled to the tank (2), they remain immersed in the solution; and a detachable head (4) that can be coupled to the main body (3) and includes an electric motor (14) linked to a rotating body (15) and a removable, coupleable, rod-shaped supporting structure (41) or anode (a) having securing means (42) for the parts to be treated, and being disposed in such a way that, when said head (4) is coupled to the main body (3), the parts remain immersed in said solution.

The invention relates to a removable electro-mechanical device for burnishing and smoothing metal parts, said device comprising: a tank (2) containing an electrolytic solution and the cathode (c); a main body (3) which closes the tank (2), and in which the electrical contacts (6), the mechanical components and the drive systems (5) are incorporated, said drive systems being located in the lower portion of the main body (3) and being vertically and radially secured to a part (7) such that, in addition, when said body (3) is coupled to the tank (2), they remain immersed in the solution; and a detachable head (4) that can be coupled to the main body (3) and includes an electric motor (14) linked to a rotating body (15) and a removable, coupleable, rod-shaped supporting structure (41) or anode (a) having securing means (42) for the parts to be treated, and being disposed in such a way that, when said head (4) is coupled to the main body (3), the parts remain immersed in said solution.

An expandable spacer, comprising: an axial tube having a surface, a proximal end and a distal end and a length, wherein, said surface defines a plurality of slits, said plurality of slits defining at least two axially displaced extensions, such that when said tube is axially compressed, said extensions extend out of said surface and define a geometry of an expanded spacer. Preferably the spacer is adapted to be inserted between two spinal vertebrae of a human.

There is provided a shape memory alloy wire with a length of polycrystalline shape memory alloy having an alloy composition including at least one member selected from the group consisting of Cu in at least 10 wt. %, Fe in at least 5 wt. %, Au in at least 5 wt. %, Ag in at least 5 wt. %, Al in at least 5 wt. %, In in at least 5 wt. %, Mn in at least 5 wt. %, Zn in at least 5 wt. % and Co in at least 5 wt. %, and having a martensite crystal structure consisting of one of 2H, 18R.sub.1, M18R, and 6R. The length of polycrystalline shape memory alloy has a cross sectional wire diameter greater than 1 micron and less than 500 microns, an oligocrystalline morphology including polycrystalline grains that span the wire diameter and a wire surface with a surface roughness that is no greater than about 100 nanometers.

There is provided a shape memory alloy wire with a length of polycrystalline shape memory alloy having an alloy composition including at least one member selected from the group consisting of Cu in at least 10 wt. %, Fe in at least 5 wt. %, Au in at least 5 wt. %, Ag in at least 5 wt. %, Al in at least 5 wt. %, In in at least 5 wt. %, Mn in at least 5 wt. %, Zn in at least 5 wt. % and Co in at least 5 wt. %, and having a martensite crystal structure consisting of one of 2H, 18R.sub.1, M18R, and 6R. The length of polycrystalline shape memory alloy has a cross sectional wire diameter greater than 1 micron and less than 500 microns, an oligocrystalline morphology including polycrystalline grains that span the wire diameter and a wire surface with a surface roughness that is no greater than about 100 nanometers.

An electrolytic polishing treatment method for a nickel-based alloy workpiece made by lamination manufacturing comprises the following steps. Step (A) comprises performing a sandblasting treatment on the nickel-based alloy workpiece, followed by ultrasonic oscillation of the sandblasted nickel-based alloy workpiece in an oxalic acid solution. Step (B) comprises placing the nickel-based alloy workpiece in an electrolyte solution containing methanol, sulfuric acid, and perchloric acid and performing electrolytic polishing on the nickel-based alloy workpiece at a constant voltage after step (A). The processes of oxalic acid activation and electrolytic polishing are used to avoid the problems of residual stress and processing directionality caused by conventional mechanical processing and make the surface properties of the entire workpiece uniform.

An electrolytic polishing treatment method for a nickel-based alloy workpiece made by lamination manufacturing comprises the following steps. Step (A) comprises performing a sandblasting treatment on the nickel-based alloy workpiece, followed by ultrasonic oscillation of the sandblasted nickel-based alloy workpiece in an oxalic acid solution. Step (B) comprises placing the nickel-based alloy workpiece in an electrolyte solution containing methanol, sulfuric acid, and perchloric acid and performing electrolytic polishing on the nickel-based alloy workpiece at a constant voltage after step (A). The processes of oxalic acid activation and electrolytic polishing are used to avoid the problems of residual stress and processing directionality caused by conventional mechanical processing and make the surface properties of the entire workpiece uniform.