Titanium alloy complex powder containing copper powder, chromium powder or iron powder, titanium alloy material consisting of this powder, and process for production thereof

Abstract

A process for production of titanium alloy material has steps of hydrogenating titanium alloy material to generate hydrogenated titanium alloy; grinding, sifting and dehydrogenating the hydrogenated titanium alloy powder to generate titanium alloy powder; adding at least one of copper powder, chromium powder or iron powder to obtain titanium alloy complex powder; consolidating the titanium alloy complex powder by CIP process and subsequent HIP process, or by HIP process after filling the titanium alloy complex powder into a capsule. In addition, titanium alloy complex powder and titanium alloy material produced by the process are provided.

1 . Titanium alloy complex powder comprising:
 titanium alloy powder containing aluminum and vanadium, or containing at least one kind selected from zirconium, tin, molybdenum, iron and chromium in addition to aluminum and vanadium, and   at least one kind of metallic powder selected from copper powder, chromium powder and iron powder mixed with the titanium alloy powder,   wherein the titanium alloy powder is made from hydrogenating titanium alloy as a raw material to generate hydrogenated titanium alloy powder and by dehydrogenating this hydrogenated titanium alloy powder, and   wherein the amount of the metallic powder ranges from 1 to 10 wt % in case that one metallic powder is added, and the amount of the metallic powder added ranges from 1 to 20 wt % in case that two or more metallic powders are mixed.   
     
     
         2 . (canceled) 
     
     
         3 . The titanium alloy complex powder according to  claim 1 , wherein average particle size of the copper powder, chromium powder or iron powder ranges from 1 to 300 μm. 
     
     
         4 . A process for production of titanium alloy complex powder, comprising steps of:
 hydrogenating titanium alloy raw material to generate hydrogenated titanium alloy powder,   dehydrogenating the hydrogenated titanium alloy powder to generate titanium alloy powder, and   mixing at least one of copper powder, chromium powder or iron powder with the titanium alloy powder.   
     
     
         5 . A process for production of titanium alloy material, comprising steps of:
 consolidating the titanium alloy complex powder according to  claim 1  by CIP process and subsequent HIP process, or by HIP process after filling the titanium alloy complex powder into a capsule.   
     
     
         6 . A titanium alloy material produced by the process according to  claim 5 . 
     
     
         7 . The titanium alloy material according to  claim 6 , wherein the density of the titanium alloy material is not less than 99% to the theoretical one. 
     
     
         8 . A process for production of titanium alloy material, comprising steps of:
 consolidating the titanium alloy complex powder according to  claim 3  by CIP process and subsequent HIP process, or by HIP process after filling into a capsule.   
     
     
         9 . A titanium alloy material produced by the process according to  claim 8 . 
     
     
         10 . The titanium alloy material according to  claim 9 , wherein the density of the titanium alloy material is not less than 99% of the theoretical one.