热处理工艺对4Cr5MoSiV1模具钢组织和硬度的影响
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摘要
对4Cr5MoSiV11模具钢条进行热处理:加热至1160℃后,保温8 h,并在880℃保温2 h。利用射线衍射仪、台式扫描电镜、全自动显微维氏硬度计对试样进行微观组织、微观硬度进行分析。结果表明,试样钢条热处理后获得较高的硬度。同时,硬度由表层至基体呈直线降低,表层硬度最高可达990HV0.1。
The heat treatment of 4Cr5MoSiV1 die steel bar was carried out. The process is heating to 1160 ℃, heat preservation for 8 h and then holding for 2 h at 880℃. The microstructure and microhardness of the samples were analyzed by means of X-ray diffractometer, bench scanning electron microscope and automatic Vickers hardness tester. The results show that, the hardness of the steel bar is higher after heat treatment. At the same time, the hardness decreases linearly from the surface layer to the matrix, and the highest hardness of the surface layer is 990 HV0.1.
The heat treatment of 4Cr5MoSiV1 die steel bar was carried out. The process is heating to 1160 ℃, heat preservation for 8 h and then holding for 2 h at 880℃. The microstructure and microhardness of the samples were analyzed by means of X-ray diffractometer, bench scanning electron microscope and automatic Vickers hardness tester. The results show that, the hardness of the steel bar is higher after heat treatment. At the same time, the hardness decreases linearly from the surface layer to the matrix, and the highest hardness of the surface layer is 990 HV0.1.
引文
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