结果表明，该钢退火状态存在四种类型碳化物，淬火组织以板条马氏作为主。
The results show that there are four kinds of carbides in annealed state of the steel, and major portion of quenched martensite is lath-like martensite.
明确了H13钢退火后硬度的高低与碳化物粒子的大小、相对量及碳化物的类型的依赖关系。
The results show that the hardness of H13 steel after annealing depends on size, relative amount and type of carbide.
循环退火后的组织与等温退火的差异很小，但其碳化物的平均尺寸要大于等温退火。
The structure of cyclic annealing and isothermal annealing has a little difference, but carbides average size of cyclic annealing is greater than that of isothermal annealing.
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