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用光学显微镜、X射线衍射仪及洛氏硬度计,研究了镍、钼含量对低碳高合金钢组织和性能的影响。结果表明,随着低碳高合金试验钢中镍、钼含量的变化(1.0%~0.8%Ni,0.7%~0.5%Mo),其均匀化退火后的组织发生变化,而淬火+回火后均为板条马氏体组织。随镍含量的降低,硬度和冲击韧性降低;随钼含量的降低,硬度变化不大,冲击韧性有所提高;降低镍、钼含量,耐腐蚀性能稍有下降,但仍处在尚耐蚀级别。含镍0.8%,钼0.5%的低碳高合金钢达到了矿山衬板的性能要求,从成本考虑更经济。
The effects of nickel and molybdenum content on the microstructure and properties of low carbon high alloyed steel were studied by optical microscope, X-ray diffraction and Rockwell hardness tester. The results show that with the change of Ni and Mo contents (1.0% -0.8% Ni, 0.7% ~ 0.5% Mo) in the low carbon high alloy test steel, the microstructure changes after the homogenization annealing, and after quenching and tempering Are lath martensite. With the decrease of nickel content, the hardness and impact toughness decreased. With the decrease of molybdenum content, the hardness did not change much and the impact toughness was improved. While the content of nickel and molybdenum decreased, the corrosion resistance decreased slightly, . Low-carbon high-alloy steels containing 0.8% nickel and 0.5% molybdenum meet the performance requirements of mine linings and are more economical from the cost perspective.