介绍了氮在非调质钢中的有益作用.非调质钢中增氮,改变了钒在相间的分布,促进V(C,N)析出,使析出相的颗粒尺寸明显减小,从而增强了钒的沉淀强化作用,大幅度提高钢的强度.氮通过促进V(C,N)析出,有效地钉扎奥氏体-铁素体晶界,细化了铁素体晶粒.增氮还可促进晶内铁素体的形成,进一步细化了铁素体组织.对微钛处理非调质钢,增氮提高TiN颗粒的稳定性,更有效地阻止奥氏体晶粒长大.充分利用廉价的氮元素,在保证一定的强度水平下,可节约钒的添加量,进一步降低非调质钢的成本.氮是非调质钢中一个经济有效的微合金化元素.
参考文献
| [1] | Korchynsky M;Paules J R.Microalloyed Forging Steels- A State of the Art Review. SAE Technical Paper Series[A].SAE Int,1989 |
| [2] | Glodowski R J;Korchynsky M;Banerji S K.Physical Metallurgy Applications and Enhanced Machinability of Microalloyed V-Ti-N Forging Steels. SAE Technical Paper Series[A].SAE Int,1998 |
| [3] | Ballinger N K;Honeycombe W K.The Effect of Nitrogen on Precipitation and Transformation Kinetics in Vanadium Steel[J].Metallurgical and Materials Transactions,1980:421-429. |
| [4] | Zajac S;Lagneborg R;Siwecki T.The Role of Nitrogen in Microalloyed Steels[A].Pittsburgh PA ISS,1995:321-338. |
| [5] | Korchynsky M;Glodowski R.The Role of Nitrogen in Microalloyed Forging Steel[A].Proto Alegre-RS,1998 |
| [6] | GB/T 15712-1995.非调质机械结构钢[S].国家技术监督局发布,1995. |
| [7] | Osuzu H.Application of Microalloyed Steels to Achieve High Toughness in Hot Forged Components Without Further Heat Treatments. SAE Technical Paper Series[M].SAE Int,1986 |
| [8] | Zajac S;Siwecki T;Hutchinson W B.The Role of Carbon in Enchancing Precipitation Strengthening of V-Microalloyed Steels[A].San-Sebasitian,1998:295-302. |
| [9] | Ochi T;Takahashi T;Takada H.Improvement of the Toughness of Hot Forged Products Through Intragranula Ferrite Formation[J].Ironmaking and Steelmaking,1989(02):21-28. |
| [10] | Koyasu Y .HSLA Steel Bar Used for Hot Forging Without Subsequent Hardening and Tempering[J].Seito Gijutsu Kenkyn Kaishi,1986,320:20-27. |
| [11] | Bodnar R L.Applications of Titanium Nitride Technology to Steel Products:Symposium Summary[J].Ironmaking and Steelmaking,1994:19-24. |
| [12] | Sundman B.The Thermo-calc Databank System[J].Calphad-Computer Coupling of Phase Diagrams and Thermochemistry,1985(02):153-190. |
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