Alloy and member

Abstract

An alloy having resistance to an aluminum alloy or the like in a molten state. An alloy includes Nb and Mo as a first element group, and at least two elements selected from Ta, W, Ti, Hf and Zr, as a second element group, wherein when the total of the first element group and the second element group is 100 at. %, a content range of each of the elements contained is 5 to 35 at. %; and has such a resistance with respect to at least one of Al, Cu and Zn that a lattice mismatch therewith is 13% or more, and a migration barrier energy of dislocation is 310 kJ/mol or more.

1 . An alloy comprising:
 Nb and Mo as a first element group, and   at least two elements selected from Ta, W, Ti, Hf and Zr, as a second element group, wherein   when the total of the first element group and the second element group is 100 at. %, a content range of each of the elements contained is 5 to 35 at. %.   a lattice mismatch with respect to at least one of Al, Cu and Zn is 13% or more, and a migration barrier energy of dislocation is 310 kJ/mol or more.   
     
     
         2 . The alloy according to  claim 1 , wherein
 an adsorption energy with respect to at least one of Al, Cu and Zn is 0.2 J/m′ or smaller.   
     
     
         3 . The alloy according to  claim 1 , wherein
 hardness is 430 or higher in terms of Vickers hardness (HV), and thermal conductivity is 25 W/(m·K) or lower.   
     
     
         4 . The alloy according to  claim 1 , further comprising:
 a single type of body-centered cubic lattice structure, or   a plurality of types of body-centered cubic lattice structures, in the whole or in a portion.   
     
     
         5 . The alloy according to  claim 4 , wherein the alloy comprises
 a dendrite structure having a body-centered cubic lattice structure and an interdendritic region having a body-centered cubic lattice structure.   
     
     
         6 . The alloy according to  claim 4 , wherein
 a short-side lattice constant is 0.31 nm or larger and 0.36 nm or smaller.   
     
     
         7 . The alloy according to  claim 1 , further comprising
 at least one of Cr, V and Al as a third element group, wherein   when the total of the first element group, the second element group and the third element group is 100 at. %,   each element constituting the third element group is contained in a range of 5 to 35 at. %.   
     
     
         8 . The alloy according to  claim 1 , wherein the alloy is used for casting of:
 a single metal of any one of Al, Cu and Zn;   an alloy mainly containing any one of Al, Cu and Zn; or   an alloy containing two or more metals of Al, Cu and Zn.   
     
     
         9 . A member, comprising the alloy according to  claim 1 ,
 wherein the member has at least one form of a die-casting die, a welding rod, a target material for surface treatment, a film and a powder.   
     
     
         10 . The alloy according to  claim 2 , wherein
 hardness is 430 or higher in terms of Vickers hardness (HV), and thermal conductivity is 25 W/(m·K) or lower.   
     
     
         11 . The alloy according to  claim 2 , further comprising:
 a single type of body-centered cubic lattice structure, or   a plurality of types of body-centered cubic lattice structures, in the whole or in a portion.   
     
     
         12 . The alloy according to  claim 3 , further comprising:
 a single type of body-centered cubic lattice structure, or   a plurality of types of body-centered cubic lattice structures, in the whole or in a portion.   
     
     
         13 . The alloy according to  claim 5 , wherein
 a short-side lattice constant is 0.31 nm or larger and 0.36 nm or smaller.   
     
     
         14 . The alloy according to  claim 2 , further comprising
 at least one of Cr, V and Al as a third element group, wherein   when the total of the first element group, the second element group and the third element group is 100 at. %,   each element constituting the third element group is contained in a range of 5 to 35 at. %.   
     
     
         15 . The alloy according to  claim 4 , further comprising
 at least one of Cr, V and Al as a third element group, wherein   when the total of the first element group, the second element group and the third element group is 100 at. %,   each element constituting the third element group is contained in a range of 5 to 35 at. %.   
     
     
         16 . The alloy according to  claim 2 , wherein the alloy is used for casting of:
 a single metal of any one of Al, Cu and Zn;   an alloy mainly containing any one of Al, Cu and Zn; or   an alloy containing two or more metals of Al, Cu and Zn.   
     
     
         17 . The alloy according to  claim 4 , wherein the alloy is used for casting of:
 a single metal of any one of Al, Cu and Zn;   an alloy mainly containing any one of Al, Cu and Zn; or   an alloy containing two or more metals of Al, Cu and Zn.   
     
     
         18 . The alloy according to  claim 7 , wherein the alloy is used for casting of:
 a single metal of any one of Al, Cu and Zn;   an alloy mainly containing any one of Al, Cu and Zn; or   an alloy containing two or more metals of Al, Cu and Zn.   
     
     
         19 . A member, comprising the alloy according to  claim 2 ,
 wherein the member has at least one form of a die-casting die, a welding rod, a target material for surface treatment, a film and a powder.   
     
     
         20 . A member, comprising the alloy according to  claim 3 ,
 wherein the member has at least one form of a die-casting die, a welding rod, a target material for surface treatment, a film and a powder.