Wear resistant alloy

Abstract

An example of a wear resistant alloy consists essentially of from 0.15 wt. % up to 0.30 wt. % C; up to 0.50 wt. % Mn; up to 0.02 wt. % P; up to 0.015 wt. % S; up to 0.50 wt. % Si; from 30.25 wt. % up to 35 wt. % Ni; from 15.0 wt. % up to 17.0 wt. % Cr; from 1.60 wt. % up to 3.20 wt. % Ti; from 1.60 wt. % up to 2.50 wt. % Al; from 2.10 wt. % up to 3.20 wt. % Nb(Ta); up to 0.015 wt. % B; Mg present in an amount up to 0.030 wt. %; up to 0.50 wt. % Cu; up to 0.25 wt. % of Mo; up to 0.25 wt. % of W; up to 0.020 wt. % Ca; and a balance of Fe and inevitable impurities. The Ti+Nb(Ta) is greater than or equal to (>) 4.40 wt. %.

What is claimed is: 
     
         1 . A wear resistant alloy, consisting essentially of:
 from 0.15 wt. % up to 0.30 wt. % C;   up to 0.50 wt. % Mn;   up to 0.02 wt. % P;   up to 0.015 wt. % S;   up to 0.50 wt. % Si;   from 30.25 wt. % up to 35 wt. % Ni;   from 15.0 wt. % up to 17.0 wt. % Cr;   from 1.60 wt. % up to 3.20 wt. % Ti;   from 1.60 wt. % up to 2.50 wt. % Al;   from 2.10 wt. % up to 3.20 wt. % Nb(Ta);   up to 0.015 wt. % B;   Mg present in an amount up to 0.030 wt. %;   up to 0.50 wt. % Cu;   up to 0.25 wt. % of Mo;   up to 0.25 wt. % of W;   up to 0.020 wt. % Ca; and   a balance being Fe and inevitable impurities;   wherein Ti+Nb(Ta) 4.40 wt. %.   
     
     
         2 . The alloy as defined in  claim 1  wherein:
 the C is present in an amount ranging from 0.16 wt. % up to 0.30 wt. %; 
 the Ni is present in an amount ranging from 30.25 wt. % up to 34.50 wt. %; 
 the Ti is present in an amount ranging from 2.40 wt. % up to 3.20 wt. %; 
 the Al is present in an amount ranging from 1.65 wt. % up to 2.30 wt. %; 
 the Nb(Ta) is present in an amount ranging from 2.10 wt. % up to 2.40 wt. %; 
 Ca is not present; and 
 Ti+Nb(Ta)≧4.50 wt. %. 
 
     
     
         3 . The alloy as defined in  claim 1  wherein:
 the Ni is present in an amount ranging from 31.0 wt. % up to 35.0 wt. %; 
 the Ti is present in an amount ranging from 2.20 wt. % up to 2.60 wt. %; 
 the Nb(Ta) is present in an amount ranging from 2.40 wt. % up to 2.80 wt. %; 
 the Mg is present in an amount up to 0.020 wt. %; 
 the Cu is present in an amount up to 0.35 wt. %; 
 the Mo is present in an amount up to 0.20 wt. %; 
 the W is present in an amount up to 0.25 wt. %; 
 the Ca is present in an amount up to 0.010 wt. %; 
 the B is present in an amount ranging from 0.005 wt. % up to 0.015 wt. %; and 
 Ti+Nb(Ta)≧4.60 wt. %. 
 
     
     
         4 . The alloy as defined in  claim 1  wherein:
 the C is present in an amount ranging from 0.15 wt. % up to 0.25 wt. %; 
 the S is present in an amount up to 0.010 wt. %; 
 the Ni is present in an amount ranging from 32.0 wt. % up to 35.0 wt. %; 
 the Ti is present in an amount ranging from 1.90 wt. % up to 2.30 wt. %; 
 the Al is present in an amount ranging from 1.60 wt. % up to 2.20 wt. %; 
 the Nb(Ta) is present in an amount ranging from 2.60 wt. % up to 3.00 wt. %; 
 the Mg is present in an amount ranging from 0.010 wt. % up to 0.020 wt. %; 
 the Cu is present in an amount up to 0.25 wt. %; 
 the Mo is present in an amount up to 0.15 wt. %; 
 the W is present in an amount up to 0.15 wt. %; 
 the B is present in an amount ranging from 0.005 wt. % up to 0.015 wt. %; 
 the Ca is present in an amount up to 0.015 wt. %; and 
 Ti+Nb(Ta)≧4.50 wt. %. 
 
     
     
         5 . The alloy as defined in  claim 1  wherein:
 the C is present in an amount ranging from 0.15 wt. % up to 0.20 wt. %; 
 the S is present in an amount up to 0.005 wt. %; 
 the Ni is present in an amount ranging from 33.0 wt. % up to 35.0 wt. %; 
 the Ti is present in an amount ranging from 1.60 wt. % up to 2.00 wt. %; 
 the Al is present in an amount ranging from 1.60 wt. % up to 2.00 wt. %; 
 the Nb(Ta) is present in an amount ranging from 2.80 wt. % up to 3.20 wt. %; 
 the Mg is present in an amount ranging from 0.020 wt. % up to 0.030 wt. %; 
 the Cu is present in an amount up to 0.15 wt. %; 
 the Mo is present in an amount up to 0.10 wt. %; 
 the W is present in an amount up to 0.10 wt. %; 
 the Ca is present in an amount up to 0.020 wt. %; 
 the B is present in an amount ranging from 0.005 wt. % up to 0.015 wt. %; and 
 Ti+Nb(Ta)≧4.40 wt. %. 
 
     
     
         6 . The alloy as defined in  claim 1  wherein the elements P, S, Mn, Si, Cu, W, and Mo are present as the inevitable impurities. 
     
     
         7 . The alloy as defined in  claim 1  wherein Zr is substituted for B and is present in an amount ranging from 0.005 wt. % to 0.015 wt. %. 
     
     
         8 . The alloy as defined in  claim 1  wherein Co is substituted for Ni. 
     
     
         9 . The alloy as defined in  claim 1  wherein:
 the C is present in an amount ranging from 0.15 wt. % up to 0.17 wt. %; 
 the Mn is present in an amount up to 0.15 wt. %; 
 the P is present in an amount up to 0.01 wt. %; 
 the S is present in an amount up to 0.001 wt. %; 
 the Si is present in an amount up to 0.10 wt. %; 
 the Ni is present in an amount ranging from 34.0 wt. % up to 35.0 wt. %; 
 the Ti is present in an amount ranging from 1.60 wt. % up to 1.80 wt. %; 
 the Al is present in an amount ranging from 1.60 wt. % up to 1.80 wt. %; 
 the Nb(Ta) is present in an amount ranging from 2.90 wt. % up to 3.00 wt. %; 
 the Mg is present in an amount ranging from 0.010 wt. % up to 0.020 wt. %; 
 the Cu is present in an amount up to 0.010 wt. %; 
 the Mo is present in an amount up to 0.010 wt. %; 
 the W is present in an amount up to 0.002 wt. %; 
 the Ca is present in an amount ranging from 0.010 wt. % up to 0.020 wt. %; 
 the B is present in an amount ranging from 0.010 wt. % up to 0.015 wt. %; and 
 Ti+Nb(Ta) 4.50 wt. %. 
 
     
     
         10 . The alloy as defined in  claim 1  wherein:
 the C is present in an amount ranging from 0.15 wt. % to about 0.17 wt. %; 
 the Mn is present in an amount up to 0.15 wt. %; 
 the P is present in an amount up to 0.01 wt. %; 
 the S is present in an amount up to 0.001 wt. %; 
 the Si is present in an amount up to 0.10 wt. %; 
 the Ni is present in an amount ranging from 34.0 wt. % up to 35.0 wt. %; 
 the Ti is present in an amount ranging from 1.60 wt. % up to 1.80 wt. %; 
 the Al is present in an amount ranging from 1.60 wt. % up to 1.80 wt. %; 
 the Nb(Ta) is present in an amount ranging from 2.90 wt. % up to 3.00 wt. %; 
 the Mg is present in an amount up to 0.010 wt. %; 
 the Cu is present in an amount up to 0.010 wt. %; 
 the Mo is present in an amount up to 0.010 wt. %; 
 the W is present in an amount up to 0.002 wt. %; 
 the Ca is present in an amount up to 0.010 wt. %; 
 the B is present in an amount up to 0.015 wt. %; and 
 Ti+Nb(Ta)≧4.50 wt. %. 
 
     
     
         11 . The alloy as defined in  claim 1  wherein primary carbides present in the alloy are randomly precipitated.