研究了低碳铝镇静钢08Al中单独添加硼、钛和同时添加硼、钛对其组织和力学性能的影响，结果显示，在相同控轧控冷工艺条件下，单独添加微量硼对盘条的屈服强度和抗拉强度影响不大，单独添加质量分数0.057%的钛可使盘条屈服强度和抗拉强度升高约20 MPa，同时添加质量分数为0.0048%的硼和质量分数为0.07%的钛可使盘条屈服强度和抗拉强度显著提高，试验中，屈服强度由260升高到316 MPa，提高了56 MPa，抗拉强度由363升高到463 MPa，提高了100 MPa。同时添加硼和钛使强度提高的原因主要是由于获得了具有高位错密度的不规则的准多边形铁素体，同时细片层珠光体相变强化对该钢强度的升高也有一定贡献。
The effect of boron and titanium on the microstructure and properties of low carbon Al-killed steel 08Al was studied by adding individual and both. The results show that the yield and tensile strength of 08Al had little change with adding trace (0.002 0%) boron alone,but the yield strength and tensile strength enhanced about 20 MPa with adding 0.057%Ti alone. The strength of 08Al significantly increased with adding both 0.004 8%B and 0.07%Ti,the yield strength value enhanced from 260 to 316 MPa and the tensile strength value enhanced from 363 to 463 MPa. The reason for high strength of 08Al+B+Ti steel is that quasi-polygonal ferrite with high dislocation density is obtained,at the same time,the phase transformation strengthening of fine lamellar pearlite has a certain contribution to the high strength.
参考文献
| [1] | C. Camurri;C. Carrasco;I. Bello;M. Trucco.Development of Low Carbon Boron Steel for Wire Drawing[J].Materials Science Forum,20075(5):4238-4242. |
| [2] | 李文英;陈伟庆;袁辉;李永东.含硼低碳钢线材的应变时效研究[J].钢铁,2006(5):78-80. |
| [3] | 赵宝纯;李桂艳;黄磊;杨静;张之胜.硼对低碳钢动态CCT曲线和微观组织的影响[J].金属热处理,2011(3):22-25. |
| [4] | 靳海亮;赵爱民;陈银莉;程俊业.钛对含硼热冲压成形用钢组织和性能的影响[J].机械工程材料,2012(08):6-9,33. |
| [5] | 李培松;肖丽俊;谢植.低碳钢中AlN和BN竞相析出热力学分析[J].钢铁研究学报,2009(5):16-18,50. |
| [6] | G. KRAUSS;S. W. THOMPSON.Ferritic microstructures in continuously cooled low- and ultralow-carbon steels[J].ISIJ International,19958(8):937-945. |
| [7] | N.TSUJI.Effect of Boron Addition on the Microstructure of Hot-deformed Ti-added Interstitial Free Steel[J].ISIJ International,19978(8):797-806. |
| [8] | 尚成嘉;胡良均;杨善武;王学敏;赵运堂;贺信莱.低碳微合金钢中针状铁素体的形成与控制[J].金属学报,2005(5):471-476. |
| [9] | 王伟;单以银;杨柯.超低碳微合金管线钢中针状铁素体的组成对强度的影响[J].金属学报,2007(6):578-582. |
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