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研究了电渣过程中,刀剪用8Cr13MoV马氏体不锈钢中Al_2O_3-(Ti,V)N型复合夹杂物形貌,形核特点,从夹杂物长大动力学分析了影响复合夹杂物析出长大的条件.研究表明:Al_2O_3-(Ti,V)N复合夹杂物形核核心Al_2O_3一般为圆形或长方形,而附着生长在核心外围的(Ti,V)N则为不规则的多边形,复合夹杂三维图像为不规则多边体;电渣过程,在一定范围内,随冷却强度升高,夹杂物数量增加,面积减小,Al_2O_3-(Ti,V)N复合夹杂物形核率有所提高;夹杂物长大动力学表明,冷却强度影响着夹杂物最终尺寸,Ti、V、N含量影响着夹杂物的析出时间和最终尺寸.
The morphology and nucleation characteristics of Al_2O_3- (Ti, V) N composite inclusions in 8Cr13MoV martensitic stainless steel were studied in the process of electroslagging. The kinetics of the growth of complex inclusions was analyzed from the kinetics of inclusion growth. The results show that Al_2O_3- (Ti, V) N composite inclusions are generally round or rectangular in shape and the (Ti, V) N attached to the outer periphery of the core is an irregular polygon, Inclusion of three-dimensional images for the irregular polygons; electroslag process, within a certain range, with the cooling intensity increased, the number of inclusions increased, the area decreases, Al 2 O 3 - (Ti, V) N inclusions nucleation rate has increased The kinetics of inclusion growth shows that the cooling strength affects the final size of inclusions. The contents of Ti, V and N affect the precipitation time and the final size of inclusions.