The ultra strength alloy steel with high content of Co and Ni is typical tempering martensite steel, and the secondary hardening is accomplished by the precipitation of fine scale alloy carbides with black white con...The ultra strength alloy steel with high content of Co and Ni is typical tempering martensite steel, and the secondary hardening is accomplished by the precipitation of fine scale alloy carbides with black white contrast until peak hardening. The crystal structure of precipitates was well determined as M 2C with hexagonal by micro beam diffraction. Observing in HREM, M 2C carbides were shown coherent with the ferrite matrix completely and have their own structure.展开更多
基金Item Sponsored by Scientific and Technological Brainstorm Project for Ninth Five-Year Plan of China(98280102)
文摘The ultra strength alloy steel with high content of Co and Ni is typical tempering martensite steel, and the secondary hardening is accomplished by the precipitation of fine scale alloy carbides with black white contrast until peak hardening. The crystal structure of precipitates was well determined as M 2C with hexagonal by micro beam diffraction. Observing in HREM, M 2C carbides were shown coherent with the ferrite matrix completely and have their own structure.
