Defects often caused by improper forging process


Published:

2019-06-10

[General Description]

Large grains are usually caused by high initial forging temperature and insufficient deformation degree, or high final forging temperature, or deformation degree falling into critical deformation area.  

Large grains are usually caused by high initial forging temperature and insufficient deformation degree, or high final forging temperature, or deformation degree falling into critical deformation area. When the deformation temperature of superalloy is too low, coarse grains may be formed when the mixed deformation structure is formed. The large grain size will reduce the plasticity and toughness of forgings, and reduce the fatigue properties.