Chromium-Base Alloy and a Production Process Therefor

Abstract

A chromium-base alloy characterized by containing titanium within a range from 0.002 t0 1.5 mass %, with the balance comprising chromium and inevitable impurities, and being produced by melting or casting only. A chromium-base alloy that can be obtained by melting only, has room temperature ductility and a good workability, and has excellent high temperature strength and oxidation resistance even at a high temperature of about 1300° C., as well as a production process therefor are provided.

1 - 2 . (canceled) 
     
     
         3 . A chromium-based alloy containing titanium within a range from 0.002 to 1.5 mass % and rhenium within a range from 0.5 to 18 mass %, with the balance comprising chromium and inevitable impurities, and produced by melting or casting only. 
     
     
         4 . A chromium-based alloy according to  claim 3  characterized by containing titanium within a range from 0.1 to 0.5 mass %. 
     
     
         5 . A chromium-based alloy containing titanium within a range from 0.002 to 1.5 mass %, and at least one element selected from the group consisting of molybdenum, tungsten, iron, ruthenium, rhodium, nickel, platinum, and iridium in the amount of 30 mass % or less in total, with the balance comprising chromium and inevitable impurities, and obtained by melting or casting only. 
     
     
         6 . A chromium-based alloy according to  claim 5  characterized by containing titanium within a range from 0.1 to 0.5 mass %. 
     
     
         7 . A chromium-based alloy according to  claim 5  characterized in that the total amount of the one or more elements selected is within a range from 0.1 to 10 mass %. 
     
     
         8 . A chromium-based alloy containing titanium within a range from 0.002 to 1.5 mass % and rhenium within a range from 0.5 to 18 mass %, and at least one element selected from the group consisting of molybdenum, tungsten, iron, ruthenium, cobalt, rhodium, nickel, platinum, and iridium in the amount of 30 mass % or less in total, with the balance comprising chromium and inevitable impurities, and obtained by melting or casting only. 
     
     
         9 . A chromium-based alloy according to  claim 8  characterized by containing titanium within a range from 0.1 to 0.5 mass %. 
     
     
         10 . A chromium-based alloy according to  claim 8  characterized in that the total amount of the one or more elements selected is within a range from 0.1 to 10 mass %. 
     
     
         11 . (canceled) 
     
     
         12 . A chromium-based alloy according to  claim 6  characterized in that the total amount of the one or more elements selected is within a range from 0.1 to 10 mass %. 
     
     
         13 . A chromium-based alloy according to  claim 9  characterized in that the total amount of the one or more elements selected is within a range from 0.1 to 10 mass %.