锻压技术

镁铝轻质复合板多层挤压复合工艺

英文标题：Extrusion compound process of Mg/Al composite plate

作者：李雷吴小俊

单位：重庆工业职业技术学院

分类号：TG379

出版年,卷(期):页码：2017,42(4):73-78

摘要：

采用挤压工艺对AZ31镁合金板和6061铝合金板进行多层挤压复合，结合扫描电镜、能谱分析仪、金相显微镜、EBSD以及万能拉伸试验机等分析手段，研究了不同坯料层数对AZ31/6061复合板的微观组织及力学性能的影响。实验结果表明：复合板镁合金侧中存在大量的细小再结晶晶粒和少量变形组织，复合板铝合金侧的晶粒呈现典型的带状结构，且周围有大量细小再结晶晶粒生成；此外，复合板中Mg/Al界面具有良好的冶金结合，且有不同厚度的界面反应层生成，其中P1板的界面反应层以Mg2Al3为主，P2板靠近镁合金侧有Mg17Al12生成，靠近铝合金层有Mg2Al3生成。

The Mg alloy plate AZ31 and Al alloy plate 6061 were successfully fabricated by the extrusion compound process, and the influences of different blank layers on the microstructure and mechanical properties of AZ31/6061 composite plate were investigated by SEM, EDS, optical microscope, EBSD and tensile testing machine. The results show that the Mg alloy layer in the extruded composite plate contains much fine recrystallized grains as well as a small amount of deformed grains, and the Al alloy layer has elongated fiber structure with a large amount of fine recrystallized grains. Besides, the excellent metallurgical bonding of Mg/Al interface is produced, and the interfacial reaction layer with various thicknesses exists Mg2Al3 in P1 composite plate, Mg2Al3 (Al side) in P2 composite plate and Mg17Al12(Mg side) in P2 composite plate.

基金项目：

重庆市教育科学“十二五”规划2014年度课题（2014-GX-128）；重庆市教委科学技术研究项目（KJ1403005）

李雷（1976-），男，硕士，副教授 E-mail：lilei1976cq@163.com

参考文献：

[1]孙德河，王丽薇，解文科. AZ31B镁合金薄板挤压成形模拟分析[J]. 锻压技术，2016，41（1）：61-65.

Sun D H，Wang L W，Xie W K. Simulation analysis on thin sheet of magnesium alloy AZ31B in the extrusion process [J]. Forging & Stamping Technology，2016，41（1）：61-65.

[2]支晨琛，张秀芝，薛康. 镁合金热连轧过程数值模拟[J]. 锻压技术，2016，41（2）：144-147.

Zhi C C，Zhang X Z，Xue K. Numerical simulation of hot tandem rolling process for magnesium alloy [J]. Forging & Stamping Technology，2016，41（2）：144-147.

[3]Qiu X, Yang Q, Cao Z Y, et al. Microstructure and mechanical properties of Mg-Zn-(Nd)-Zr alloys with different extrusion processes[J]. Rare Metals, 2016, 35(11):1-9.

[4]Xu C, Sheng G, Wang H, et al. Tungsten inert gas welding-brazing of AZ31B magnesium alloy to TC4 titanium alloy[J]. Journal of Materials Science & Technology, 2016, 32(2):167-171.

[5]Xu C, Sheng G, Wang H, et al. Reinforcement of Mg/Ti joints using ultrasonic assisted tungsten inert gas welding-brazing technology[J]. Science & Technology of Welding & Joining, 2014, 19(8):703-707.

[6]马志鹏，闫久春，毕凤琴，等. 钎焊时间对钛/铝基复合材料接头组织基性能的影响[J]. 兵器材料科学与工程，2014，37 (4): 58-61.

Ma Z P，Yan J C，Bi F Q，et al. Effect of brazing time on microstructure and properties of brazed joints of titanium to SiCp/Al composites[J]. Ordnance Material Science and Engineering，2014，37（4）：58-61.

[7]郑晖，赵曦雅. 汽车轻量化及铝合金在现代汽车生产中的应用[J]. 锻压技术，2016，41（2）：1-5.

Zheng H，Zhao X Y. Lightweight automobile and application of aluminum alloys in modern automobile production [J]. Forging & Stamping Technology，2016，41（2）：1-5.

[8]梁柱，李国俊，张治民，等. 5A06铝合金带筋薄板件挤压缺陷的模拟分析及优化[J]. 锻压技术，2016，41（2）：51-57.

Liang Z，Li G J，Zhang Z M，et al. Simulation analysis and optimization of extrusion defects for aluminum alloy 5A06 sheet with rib [J]. Forging & Stamping Technology，2016，41（2）：51-57.

[9]Yan Y B, Zhang Z W, Shen W, et al. Microstructure and properties of magnesium AZ31B-aluminum 7075 explosively welded composite plate[J]. Materials Science & Engineering A, 2010, 527(9): 2241-2245.

[10]Li Y, Liu P, Wang J, et al. XRD and SEM analysis near the diffusion bonding interface of Mg/Al dissimilar materials[J]. Vacuum, 2007, 82(1): 15-19.

[11]Wu K, Chang H, Maawad E, et al. Microstructure and mechanical properties of the Mg/Al laminated composite fabricated by accumulative roll bonding (ARB)[J]. Materials Science & Engineering A, 2010, 527(13):3073-3078.

服务与反馈：

【本网站尚未开通全文下载服务】【加入收藏】