Hardfacing Material

Abstract

The present invention discloses a kind of hardfacing alloy, which can be applied onto a workpiece's surface by any one surface treatment process in accordance with material, dimensions, and required properties of the workpiece. For example, this novel hardfacing material can be heated to a fully melted state or a partially melted state by using different types of heat sources, such that the melted hardfacing material can be coated onto the surface of any one workpiece to form a protective layer or a surface modification layer. As a result, the workpiece having the surface coating layer with superior characteristics exhibits outstanding functional performances and has a long service time.

What is claimed is: 
     
         1 . A hardfacing material, comprising:
 at least four principal metal elements, being selected from the group consisting of Al, Co, Cr, Cu, Fe, Mn, Mo, Ni, Nb, Ti, Ta, V, W, and Zr, and a first summation mole number of the principal metal elements is 50-90 percent of a total mole number of the hardfacing material; and   at least one non-metal element, being selected from the group consisting of B, C, N, O, and Si, and a second summation mole number of the non-metal element is 5-50 percent of the total mole number of the hardfacing material;   wherein two of the at least four principal metal elements are selected from the group consisting of Al, Cr, Mo, Nb, Ti, Ta, V, W, and Zr;   wherein each of the principal metal elements have a mole number of principal metal element, and the mole number of principal metal element is equal to or greater than 5 percent of the first summation mole number.   
     
     
         2 . The hardfacing material of  claim 1 , wherein the principal metal elements and the at least one non-metal element form at least one base alloy structure and at least one precipitation-strengthened alloy structure of the hardfacing material. 
     
     
         3 . The hardfacing material of  claim 1 , wherein a product or a semi-product of the hardfacing material can be a powder, a wire, a welding rod, a cored wire, or a bulk. 
     
     
         4 . The hardfacing material of  claim 1 , being able to be coated on the surface of a target workpiece by a surface modification process selected from the group consisting of: meltallizing, build-up welding, thermal spraying, and sintering.