Study on microstructure and texture evolution of cryogenic rolled MP159 super-alloy
The effect of cryogenic rolling on the microstructure,texture evolution and mechanical properties of MP159 superalloy were studied under different rolling deformation.The results showed that the deformation of MP159 superalloy was obvious after cryogenic rolling,and the original equiaxed grains and annealing twins elonga-ted along the rolling direction with the increase of the rolling deformation.MP159 superalloy obtained excellent me-chanical properties when the rolling deformation was 48%.In addition,with the increase of rolling deformation,the deformation texture type of MP159 superalloy was basically unchanged,mainly the brass texture along the α fiber component,but the overall intensity of the cold deformation texture increased.The formation of deformation twins during the process of cryogenic rolling led to the increase of the intensity of F and CuT textures.
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