The mechanical property of m is higher than that of annealing structure after warm compression, probably because of the fine ferrite grain with uniformly distributed nano-sized carbide particles.
温变形后组织的力学性能高于退火变形组织的原因是晶粒的细化和纳米碳化物的均匀分布。
2
The massive microstructure after annealing above the eutectoid temperature changed greatly. The microstructure became more uniform and more fine and the defects within it nearly disappeared.
块状组织在高于共析温度退火时，组织形态变化较大，组织变得细密均匀，且缺陷已趋于消失。
3
The invention also provides the preparation method of the ferromagnetic oxide powder, comprising the steps of dosing, mixing, preburning, crude crushing, fine grinding, drying, annealing and smashing.