采用单向轧制和交叉轧制工艺分别进行了AZ31镁合金板材轧制实验,分析了轧制板材经退火处理后的组织与力学性能.结果表明:采用单向轧制工艺,当板材最终变形量相等时,经退火处理后的板材大压下量比小压下量得到的微观组织更为细小;交叉轧制得到轧制板材可以缓解镁合金轧制板材在室温下的各向异性,其微观组织较单向轧制均匀,具有更好的冲压成形性能;交叉轧制和单向轧制两种工艺得到的板材微观组织细化效果相似.
AZ31 magnesium alloy sheets were produced by unidirectional rolling and cross rolling with different rolling parameters. Microstructure and mechanical properties of the rolled sheets after annealing were examined. The results indicate that for the unidirectional rolling. under the same total deformation strain,the annealed sheets heavily deformed in every pass have finer microstructure. Cross rolling decreases the anisotropy of magnesium alloy sheets at room temperature. Sheets processed by cross rolling exhibit more homogeneous microstructure and better performance for stamping. Unidirectional rolling and cross rolling have the similar refining effects on microstructure of magne8ium sheets.
参考文献
| [1] | 汪凌云,黄光杰,陈林,黄光胜,李伟,潘复生.镁合金板材轧制工艺及组织性能分析[J].稀有金属材料与工程,2007(05):910-914. |
| [2] | 苌群峰,彭颖红,刘守荣,李大永,曾小勤.镁合金板材温热成形性能[J].上海交通大学学报,2006(06):877-880. |
| [3] | 张青来,卢晨,朱燕萍,丁文江,贺继泓.轧制方式对AZ31镁合金薄板组织和性能的影响[J].中国有色金属学报,2004(03):391-397. |
| [4] | 余琨,黎文献.Mg-Al-Zn系变形镁合金轧制及热处理后的组织和性能[J].金属热处理,2002(05):8-11. |
| [5] | S. H. Zhang;K. Zhang;Y. C. Xu;Z. T. Wang;Y. Xu;Z. G. Wang .Deep-drawing of magnesium alloy sheets at warm temperatures[J].Journal of Materials Processing Technology,2007(1/3):147-151. |
| [6] | K. Iwanaga;H. Tashiro;H. Okamoto;K. Shimizu .Improvement of formability from room temperature to warm temperature in AZ-31 magnesium alloy[J].Journal of Materials Processing Technology,2004(0):1313-1316. |
| [7] | K. Mori;H. Tsuji .Cold Deep Drawing of Commercial Magnesium Alloy Sheets[J].CIRP Annals,2007(1):285-288. |
| [8] | Yasumasa Chino;Kensuke Sassa;Akira Kamiya .Enhanced formability at elevated temperature of a cross-rolled magnesium alloy sheet[J].Materials Science & Engineering, A. Structural Materials: Properties, Misrostructure and Processing,2006(1/2):349-356. |
| [9] | 杨平,孟利,毛卫民,蔡庆武.利用道次间退火改善镁合金轧制成形性的研究[J].材料热处理学报,2005(02):34-38. |
| [10] | 陈林,汪凌云,卢志文.AZ31B镁合金板材冲压成形性能研究[J].轻合金加工技术,2006(01):31-34,54. |
| [11] | 李英龙;李体彬.有色金属锻造与冲压技术[M].北京:化学工业出版社,2008:272-273. |
- 下载量()
- 访问量()
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%