EFFECT OF V-N MICROALLOYING ON HEAT TREATMENT CHARACTER OF Si-Mn SERIES SPRING STEEL
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摘要: 分别采用VN、Fe-V合金在实验室冶炼了不同钒含量的Si-Mn系弹簧钢,并系统研究了其淬透性、抗回火稳定性、表面脱碳敏感性和力学性能的变化情况。结果表明,本试验条件下,采用钒氮微合金化的Si-Mn系弹簧钢(0.50%C,0.06%~0.10%V,0.01%N)具有较好的淬透性和抗回火稳定性。钒含量增加,强度显著增加。钒氮微合金化对表面脱碳敏感性没有明显影响。Abstract: A series of experimental Si-Mn series spring steel which has different vanadium content was smelt in laboratory by Fe-V or VN alloying. The penetration hardenability, temper resistance, surface decarbonization and mechanical properties of the test steel were studied. The results show that the steel alloyed by VN alloy has good hardenability and temper resistance. The strength of steel increases with the increasing of vanadium content. There is no obvious effect on surface decarbonization use VN alloy compare with Fe-V alloy to smelt spring steel.
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Key words:
- VN alloy /
- vanadium /
- spring steel /
- penetration hardenability /
- mechanical properties
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