Co-ni-based alloy, method of controlling crystal of co-ni-based alloy, method of producing co-ni-based alloy, and co-ni-based alloy having controlled crystallinity

Abstract

Provided is a Co—Ni-based alloy in which a crystal is easily controlled, a method of controlling a crystal of a Co—Ni-based alloy, a method of producing a Co—Ni-based alloy, and a Co—Ni-based alloy having controlled crystallinity. The Co—Ni-based alloy includes Co, Ni, Cr, and Mo, in which the Co—Ni-based alloy has a crystal texture in which a Goss orientation is a main orientation. The Co—Ni-based alloy preferably has a composition including, in terms of mass ratio: 28 to 42% of Co, 10 to 27% of Cr, 3 to 12% of Mo, 15 to 40% of Ni, 0.1 to 1% of Ti, 1.5% or less of Mn, 0.1 to 26% of Fe, 0.1% or less of C, and an inevitable impurity; and at least one kind selected from the group consisting of 3% or less of Nb, 5% or less of W, 0.5% or less of Al, 0.1% or less of Zr, and 0.01% or less of B.

What is claimed is: 
     
         1 . A Co—Ni-based alloy, comprising Co, Ni, Cr, and Mo, wherein the Co—Ni-based alloy has a crystal texture in which a Goss orientation is a main orientation. 
     
     
         2 . A Co—Ni-based alloy according to  claim 1 , wherein the Co—Ni-based alloy has a composition including, in terms of mass ratio:
 28 to 42% of Co, 10 to 27% of Cr, 3 to 12% of Mo, 15 to 40% of Ni, 0.1 to 1% of Ti, 1.5% or less of Mn, 0.1 to 26% of Fe, 0.1% or less of C, and an inevitable impurity; and 
 at least one kind selected from the group consisting of 3% or less of Nb, 5% or less of W, 0.5% or less of Al, 0.1% or less of Zr, and 0.01% or less of B. 
 
     
     
         3 . A Co—Ni-based alloy according to  claim 1 , wherein the Co—Ni-based alloy has a crystal texture in which a Goss orientation accounts for 35 to 55% of all orientations. 
     
     
         4 . A Co—Ni-based alloy according to  claim 1 , wherein the Co—Ni-based alloy is produced by performing cold rolling at a reduction ratio of 15% or more. 
     
     
         5 . A Co—Ni-based alloy according to  claim 1 , wherein a main orientation of the crystal texture after heat treatment is identical to a main orientation of the crystal texture before heat treatment. 
     
     
         6 . A Co—Ni-based alloy according to  claim 1 , wherein the crystal texture is converted to a texture in which a plurality of regions each having a low dislocation density are present in a region having a high dislocation density, by performing heat treatment. 
     
     
         7 . A Co—Ni-based alloy, comprising Co, Ni, Cr, and Mo, wherein the Co—Ni-based alloy has a fine region and a deformation twin, the deformation twin being separated by the fine region. 
     
     
         8 . A Co—Ni-based alloy according to  claim 7 , wherein the Co—Ni-based alloy has a composition including, in terms of mass ratio:
 28 to 42% of Co, 10 to 27% of Cr, 3 to 12% of Mo, 15 to 40% of Ni, 0.1 to 1% of Ti, 1.5% or less of Mn, 0.1 to 26% of Fe, 0.1% or less of C, and an inevitable impurity; and 
 at least one kind selected from the group consisting of 3% or less of Nb, 5% or less of W, 0.5% or less of Al, 0.1% or less of Zr, and 0.01% or less of B. 
 
     
     
         9 . A Co—Ni-based alloy according to  claim 7 , wherein the Co—Ni-based alloy has a crystal texture in which a Goss orientation accounts for 35 to 55% of all orientations. 
     
     
         10 . A Co—Ni-based alloy according to  claim 7 , wherein the Co—Ni-based alloy is produced by performing cold rolling at a reduction ratio of 15% or more. 
     
     
         11 . A Co—Ni-based alloy according to  claim 7 , wherein a main orientation of the crystal texture after heat treatment is identical to a main orientation of the crystal texture before heat treatment. 
     
     
         12 . A Co—Ni-based alloy according to  claim 7 , wherein the crystal texture is converted to a texture in which a plurality of regions each having a low dislocation density are present in a region having a high dislocation density, by performing heat treatment. 
     
     
         13 . A Co—Ni-based alloy, comprising Co, Ni, Cr, and Mo, wherein the Co—Ni-based alloy has a dislocation density of 10 15  m −2  or more. 
     
     
         14 . A Co—Ni-based alloy according to  claim 13 , wherein the Co—Ni-based alloy has a composition including, in terms of mass ratio:
 28 to 42% of Co, 10 to 27% of Cr, 3 to 12% of Mo, 15 to 40% of Ni, 0.1 to 1% of Ti, 1.5% or less of Mn, 0.1 to 26% of Fe, 0.1% or less of C, and an inevitable impurity; and 
 at least one kind selected from the group consisting of 3% or less of Nb, 5% or less of W, 0.5% or less of Al, 0.1% or less of Zr, and 0.01% or less of B. 
 
     
     
         15 . A Co—Ni-based alloy according to  claim 13 , wherein the Co—Ni-based alloy has a crystal texture in which a Goss orientation accounts for 35 to 55% of all orientations. 
     
     
         16 . A Co—Ni-based alloy according to  claim 13 , wherein the Co—Ni-based alloy is produced by performing cold rolling at a reduction ratio of 15% or more. 
     
     
         17 . A Co—Ni-based alloy according to  claim 13 , wherein a main orientation of the crystal texture after heat treatment is identical to a main orientation of the crystal texture before heat treatment. 
     
     
         18 . A Co—Ni-based alloy according to  claim 13 , wherein the crystal texture is converted to a texture in which a plurality of regions each having a low dislocation density are present in a region having a high dislocation density, by performing heat treatment.