研究了硼氮复合添加(210×10-6N+17×10-6B)和典型增氮(120×10-6N)的V-N微合金钢粗晶热影响区(CGHAZ)中组织和性能随冷却速度(t8/5)的变化规律.研究结果表明:在V-N微合金钢中添加微量硼时,各t8/5下的CGHAZ中均可通过抑制先共析铁素体的转变,促进针状铁素体和粒状贝氏体的形成,使M-A岛的含量降低、尺寸减小、弥散度提高.因而使CGHAZ的V型缺口夏比冲击(CVN)韧性得到改善.
参考文献
| [1] | Zajal S;Siwecki T;Hutchinson B et al.Weldability of HighNitrogen Ti-V Microalloyed Steel Plates Processed Via Thermomechanical Controlled Rolling[Internal Report IM-2764][R].Swedish:Institute for Metals Research,1991. |
| [2] | M.P.STAIGER .Effect of Nitrogen on Formation of Martensite-Austenite Constituent in Low Carbon Steels[J].ISIJ International,1999(2):183-190. |
| [3] | 杨善武,王学敏,贺信莱.超低碳钢在铁素体生长过程中硼分布的变化[J].钢铁研究学报,1999(04):39-43. |
| [4] | 李智超.先共析铁素体对粒状贝氏体性能的影响[J].热加工工艺,1991(02):3. |
| [5] | Lambert A;Drillet J;Gourues A F et al.Microstructure of M-A Constituent in HAZ of HSLA Steel Welds in Relation With Toughness Properties[J].Sci Technol Welding Joining,2000,5(02):1. |
| [6] | Yurioka N.Impact of Welding Research on Steel Composition Development[A].Pittsburgh:Nippon Steel Corporation,1984:194. |
| [7] | Bayraktar E;Kaplan D .Mechanical and Metallurgical Investigation of Martensite-Austenite Constituents in Simulated Welding Conditions[J].Journal of Materials Processing Technology,2004,153(08):87. |
| [8] | Kasamatus Y;Takashima S;Hosoya T .Influence of Martensite-Austenite Constituent on Thoughness of Heat-Affectedzone of High-Strength Weldable Structural Steel[J].The Iron and Steel Institute of Japan,1979,12(08):1222. |
| [9] | 李亚江,邹增大,吴会强,王娟.HQ130钢热影响区的ICHAZ区组织性能[J].焊接学报,2001(02):54-58. |
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