通过拉伸试验检测了单机架可逆轧制冷轧压下率为68％低碳铝镇静钢板力学性能,用金相显微镜观察试验钢板冷轧态与退火态的纤维组织,并用X射线衍射仪测量试验钢中不同类型织构的含量.结果表明,退火温度由660℃升高至720℃,低碳铝镇静钢的屈服强度为201 ～212 MPa,抗拉强度为278 ～311MPa,屈强比为0.68 ～0.72,总伸长率为38％ ～ 42％,加工硬化指数n值为0.21-0.24,而塑性应变比r值为1.25 ～1.58,|△r|值为0.39 ～0.78.退火温度的升高使得再结晶后晶粒尺寸增加和“饼型”程度加大,γ纤维织构强度增加.当退火温度升高至720℃时,再结晶晶粒尺寸不均匀,|△r|值较大,且抗拉强度明显降低.综合作用的结果是,退火温度在680 ～700℃范围时较为合适,深冲性能较好.
参考文献
| [1] | Takechi H .Metallurgy aspects on IF steel from industrial viewpoint[J].ISIJ International,1994,34(01):3-7. |
| [2] | Yuhua Song;Yongnian Yan;Renji Zhang .Manufacture of the die of an automobile deck part based on rapid prototyping and rapid tooling technology[J].Journal of Materials Processing Technology,2002(1/3):237-242. |
| [3] | 胡卓超,蒋奇武,赵骧,左良.预回复对08Al深冲钢板再结晶组织及织构的影响[J].东北大学学报(自然科学版),2001(02):146-149. |
| [4] | Schlippenbach U Von;Emren F;Lucke K.Investagation of the development of the cold rolling texture in deep drawing steels by ODF-analysis[J].Aeta Metal,1986(11):1290-1300. |
| [5] | 康永林.现代汽车板的质量控制与成形性[M].北京:冶金工业出版社,1999 |
| [6] | Ray R K;Jonas J J;Hook R E .Cold rolling and annealing textures in low carbon and extra low carbon steels[J].International Materials Reviews,1994,39(04):129-172. |
| [7] | Schinid E;Boas W.Plasticity of Crystals[M].Landan:Champan and Hal1,1968:104. |
| [8] | Tung L K;Qvadir M Z;Duggan B J .A novel rolling-annealing cycle for enhanced deep drawing properties in IF steels[J].Key Engineering Materials,2002,223-236(01):437-442. |
| [9] | H. Zhao;S. C. Rama;G. C. Barber .Experimental study of deep drawability of hot rolled IF steel[J].Journal of Materials Processing Technology,2002(1/3):73-79. |
| [10] | 查先进,严亚兰.冷轧宽带钢连续退火炉与罩式退火炉的比较研究[J].冶金信息导刊,1999(01):17-19. |
| [11] | 孟运杰.低碳钢丝球化退火工艺的探讨[J].金属制品,2002(05):26-28. |
| [12] | 唐获;谷春阳;王先进 等.退火温度及平整量对03Al钢板组织性能的影响[J].钢铁,1999,34(12):47-51. |
| [13] | Bevis Hutchinson;Dorota Artymowicz .Mechanisms and modeling of microstructure/texture evolution in interstitial-free steel sheets[J].ISIJ International,2001,41(02):404-413. |
| [14] | 朱晶,刘帅,贾维平,吕林,王海慧.退火工艺对Ti+Nb-IF钢组织与性能的影响[J].热加工工艺,2008(22):59-63. |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%