搅拌针旋转频率为1200r/min、焊接速率为40mm/min条件下,对4mm厚的压铸镁合金AZ91D进行连接,可获得无缺陷的焊缝接头.使用OM,SEM对焊缝接头微观组织进行观察.结果表明:压铸镁合金AZ91D搅拌摩擦焊接头焊核区域微观组织呈现出较大差异,顶部冠状区组织为均匀粗大、高致密度的再结晶晶粒,平均晶粒约为15μm;中心环形区域及焊核底部组织相对细小,均匀程度不如焊核冠状区;焊核区组织均为再结晶晶粒,晶粒形核模式与非连续动态再结晶模式类似.
参考文献
| [1] | Z.Y. MA .Friction Stir Processing Technology: A Review[J].Metallurgical and materials transactions. A, physical metallurgy and materials science,2008(3):642-658. |
| [2] | GB 9125978-1991.Friction stir butt welding[S]. |
| [3] | 栾国红,关桥.高效、固相焊接新技术--搅拌摩擦焊[J].电焊机,2005(09):8-13. |
| [4] | 游国强,张均成,王向杰,陈勇.压铸态AZ91D镁合金搅拌摩擦焊接头微观组织研究[J].材料工程,2012(05):54-58. |
| [5] | KIEIBUS A;RZYCHON T .Microstructure of AM50 die casting magnesium alloy[J].Journal of Achievements in Materials and Manufacturing Engineering,2006,18(1-2):135-139. |
| [6] | Jun Shen;Guoqiang You;Siyuan Long .Abnormal macropore formation during double-sided gas tungsten arc welding of magnesium AZ91D alloy[J].Materials Characterization,2008(8):1059-1065. |
| [7] | MUNITZ A;COTLER C;STERN A .Mechanical properties and microstructure of gas tungsten arc welded magnesium AZ91Dplates[J].MATERIALS SCIENCE & ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,2001,302(1):68-73. |
| [8] | Mishra RS;Ma ZY .Friction stir welding and processing[J].Materials Science & Engineering, R. Reports: A Review Journal,2005(1/2):III-0. |
| [9] | 张华,林三宝,吴林,冯吉才.AZ31镁合金搅拌摩擦焊接显微组织形成机制[J].稀有金属材料与工程,2005(07):1021-1024. |
| [10] | 张华,林三宝,吴林,冯吉才.AZ31镁合金搅拌摩擦焊接头焊核区域成型过程及影响因素[J].航空材料学报,2004(02):6-10. |
| [11] | 王大勇,冯吉才,狄欧,刘会杰.铝合金搅拌摩擦焊接头焊核区等轴再结晶组织的形成机制[J].焊接学报,2003(04):33-35. |
| [12] | 丁成钢,周海,胡飞,董春林.7050铝合金搅拌摩擦焊焊接接头的组织与冲击韧性[J].机械工程材料,2010(09):27-30. |
| [13] | R. Nandan;T. DebRoy;H.K.D.H. Bhadeshia .Recent advances in friction-stir welding - Process, weldment structure and properties[J].Progress in materials science,2008(6):980-1023. |
| [14] | Weifeng Xu;Jinhe Liu;Guohong Luan;Chunlin Dong .Microstructure and mechanical properties of friction stir welded joints in 2219-T6 aluminum alloy[J].Materials & design,2009(9):3525-3536. |
| [15] | 史清宇,王细波,康旭,孙延军.搅拌摩擦焊温度场[J].清华大学学报（自然科学版）,2010(07):980-983,988. |
| [16] | 陈振华,许芳艳,傅定发,夏伟军.镁合金的动态再结晶[J].化工进展,2006(02):140-146. |
| [17] | 刘楚明,刘子娟,朱秀荣,周海涛.镁及镁合金动态再结晶研究进展[J].中国有色金属学报,2006(01):1-12. |
| [18] | 何运斌,潘清林,覃银江,刘晓艳,李文斌,Yu-lung CHIU,J. J. J. CHEN.ZK60镁合金热变形过程中的动态再结晶动力学[J].中国有色金属学报,2011(06):1205-1213. |
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%