测量了双辊薄带连铸机生产的AISI304连铸薄带的力学性能,采用光学显微镜、扫描电镜和透射电镜观察了连铸薄带的微观组织结构,分析了微观组织结构对性能的影响.结果表明,连铸薄带内部为铸态组织,二次枝晶间距平均值为6.7μm,细小的铸态组织决定了薄带的最终组织细化和成分均匀;快速冷却有助于形成球形夹杂物,直径500～700 nm,较小的球形夹杂物能够钉扎位错;连铸薄带内析出粒子的直径20～100 nm,这种微小析出能够产生沉淀强化作用;薄带组织中大量位错、层错和孪晶的存在一定程度提高了连铸薄带力学性能.
参考文献
| [1] | C. A. Santos;J. A. Spim Jr.;A. Garcia .Modeling of solidification in twin-roll strip casting[J].Journal of Materials Processing Technology,2000(1/3):33-39. |
| [2] | Lang X .Edge containment of a twin-roll caster for near-net-shape strip casting[J].Journal of Materials Processing Technology,1997,63:788-780. |
| [3] | Li B Q .Producing thin strips by twin-roll casting.Part Ⅰ:Process aspects and quality issues[J].Journal of the Minerals,Metals & Materials Society,1995,13(A):435-437. |
| [4] | Cook R;Grocock P G;Thomas P M et al.Development of the twin-roll casting process[J].Journal of Materials Processing Technology,1995,55:76-80. |
| [5] | Bagshaw M J;Hunt J D;Jordan R M .Heat line formation in a roll caster[J].Applied Scientific Research,1987,44:161-170. |
| [6] | Miyazawa K;Szekely J .A mathematical model of the splat cooling process using the twin-roll technique[J].Metallurgical and Materials Transactions,1981,12A:1047-1052. |
| [7] | 李春胜.钢铁材料手册[M].南昌:江西科学技术出版社,2004:529-530. |
| [8] | 孙斌煜.板带铸轧理论与技术[M].北京:冶金工业出版社,2002:220-221. |
| [9] | 雍岐龙,孙新军,刘清友,张晨,李继康.薄板坯连铸连轧时夹杂物在奥氏体中形成与控制的理论考虑[J].特殊钢,2005(01):1-5. |
| [10] | 宋维锡.金属学[M].北京:冶金工业出版社,1988:163-165. |
| [11] | 黄孝瑛.透射电子显微学[M].上海:上海科学技术出版社,1979:315-316. |
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%