High-temperature nickel alloys modified with hafnium and zirconium

Abstract

Alloys ZhS6U-VI and ZhS3DK-VI modified jointly and individually with zirconium {0.05"i,) and hafnium (0.5%) arc described. It is established that complex modifying increases the strength and ductility properties of the alloys. The microhardness of alloy ZhS6U-VI is increased after tests for long-term strength. In alloy ZhS6U-VI tested for long-term strength cy-phase segregates in the form of flake and acicular particles. Modification of the alloy with hafnium increases the content of the flake o-phase, modification with zirconium increases the content of the acicular G-phase.