摘要：【中文】本发明公开了一种用于模具的材料粉末，所述材料粉末采用水气联合雾化工艺制备，粉末成分质量百分比如下：C为0.2%~0.6%，Cr为5%~6%，V为6%~12%，Mo为1%~2%，剩余量为Fe。本发明还公开了一种模具材料制备方法，使用上述粉末；采用分解氨气氛进行粉末预处理；将预处理后粉末用压制成型或冷等静压成型，得成型后坯料；将成型后坯料进行预烧结处理；预烧结后用无包套热等静压致密化或用小变形量锻造致密化。本模具材料晶粒细小、碳化物均匀，可提升模具的耐磨性、耐高温性，致密度高，从而能增强模具的疲劳性能；另外本模具材料制备方法可减少锻造次数，缩短工艺流程，采用无包套热等静压时可降低工艺成本。 【EN】The invention discloses material powder for a die, which is prepared by adopting a water-gas combined atomization process, and comprises the following components in percentage by mass: 0.2-0.6% of C, 5-6% of Cr, 6-12% of V, 1-2% of Mo and the balance of Fe. The invention also discloses a preparation method of the die material, which uses the powder; performing powder pretreatment in an ammonia decomposition atmosphere; pressing or cold isostatic pressing the pretreated powder to obtain a formed blank; pre-sintering the formed blank; after pre-sintering, densification is carried out by hot isostatic pressing without a sheath or by forging with a small deformation. The die material has fine grains and uniform carbide, can improve the wear resistance and high temperature resistance of the die, and has high density, thereby enhancing the fatigue performance of the die; in addition, the preparation method of the die material can reduce the forging times, shorten the process flow and reduce the process cost when the non-sheath hot isostatic pressing is adopted.