Review of plastic processing and microstructure control method of GH4169 alloy
Aiming at the problems of complex process,low efficiency and accuracy of forming,and difficult cooperative control of micro-structure,mechanical properties and forming accuracy of superalloy parts,microstructure control and forming process optimization are a-dopted as effective means to realize forming and modification integrated manufacturing of superalloy parts.As a high-temperature stable phase,δ phase often occurs during plastic deformation and heat treatment processes,and the precipitation amount and morphology of pre-cipitates affect the microstructure and mechanical properties of the alloy.Due to the differences in component structure and service condi-tions of the parts,the required microstructure,properties and processing technology are also diverse.The plastic processing technologies of ring,disk and blade GH4169 alloy parts were introduced,while also introduced the role that δ phase plays in it.Subsequently,the e-volution behavior of δ phase,such as precipitation,spheroidization and dissolution,and its influence on the deformation behavior and me-chanical properties of the alloy were described and summarized.
NETL
NSTL
万方数据
维普
