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中文摘要：
为开发拉延模具用含钒合金灰铸铁,结合表面感应淬火工艺与热分析方法,研究了钒对合金灰铸铁组织、力学性能以及感应淬火性能的影响.当钒的添加量为0.1%时,它对共晶开始阶段释放的热量影响很小,且少量减少了游离渗碳体的数量,进而降低了铸态硬度.当钒的添加量为0.3%时,强烈抑制共晶开始阶段热量的释放,同时增加游离渗碳体的数量,进而显著增加铸态硬度.钒增加感应淬火后硬度;随片状石墨变粗大,淬硬层变深.添加了0.1%钒的灰铁HT2有最佳的性能：其抗拉强度为488 MPa,铸态硬度为264 HBS,感应淬火的平均硬度为55.7 HRC,淬硬层厚度约为4 mm.
英文摘要：
For the development of vanadium alloyed gray iron used for stamping dies, surface induction hardening process and thermal analysis were combined to study the effect of vanadium on microstructure, mechanical ＆ induction hardening properties of alloy cast iron. There was small effect of vanadium on the released latent heat from eutectic phase, but a relative decrease in amount of free cementite, when the adding amount was 0.1%. When the adding amount was 0.3 %, it inhibited the release of latent heat in the beginning of eutectic reaction strongly and increased the amount of free cementite and notably increased the as cast hardness. Vanadium enhanced hardness after induction quenching treatment. The thicker the flake graphite was, the deeper the induction hardening layer was. The HT2 gray iron with addition of 0.1% vanadium has the best performance： tensile strength is 488 MPa and as-cast hardness is 264 HBS and the average hardness of the surface after induction hardening is 55.7 HRC as well as the depth of hardened layer is about 4 mm.
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同项目期刊论文
A new analytical model for thermal stresses in multi-phase materials and lifetime prediction methods
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