| Title |
Microstructures and Textures of Electrodeposited Ni/Invar Bimetal |
| Authors |
강지훈(Ji Hoon Kang); 서정호(Jeong Ho Seo); 박용범(Yong Bum Park) |
| ISSN |
1738-8228(ISSN), 2288-8241(eISSN) |
| Keywords |
Bimetal; Nanocrystalline Invar; Columnar Ni; Electrodeposition; Grain growth; Texture |
| Abstract |
By using electrodeposition, we developed a new method to produce Ni/Invar bimetal sheets, which have been used for the present study to investigate the texture evolution during annealing. The grains of electrodeposited Ni were columnar, while those of electrodeposited Fe-Ni alloy were nanocrystalline. These different parts of the bimetal underwent different evolution of textures and microstructures during annealing. In the nanocrystalline Invar, the asdeposited textures were of fiber-type characterized by strong <100>//ND and weak <111>//ND components, and the occurrence of grain growth resulted in the strong development of the <111>//ND fiber texture with the minor <100> // ND components. On the other hand, in the columnar-structured Ni part, the as-deposited <110>//ND fiber texture transformed to the <112>//ND fiber texture due to recrystallization occurring above 550℃. The development of microtextures which took place during annealing in the Ni/Invar interfacial regions was investigated by using the OIM analysis, and discussed in terms of the effect of atomic diffusion across the interfaces. |