Production of Unidirectionally Solidified Columnar Crystal and Single Crystal Superalloy Castings.

摘要

The material selection and casting as well as the properties and heat treatment practices of directionally solidified and single crystal superalloys have been reviewed. The presentation mainly concentrates on the turbine blade castings produced from the nickel-base superalloys. The mold reactions with the superalloy melt have been characterized. Attention has, furthermore, been paid on the metallurgy and microstructures of the nickel base superalloys.