Research on microstructure and mechanical properties of high strength Al-Mg alloy fabricated by double-wire and gas tungsten arc additive manufacturing process

被引：0
|
作者：
He J. [1 ]
Feng Y. [1 ]
Zhang L. [1 ]
Zhan B. [1 ]
机构：
[1] Nanjing University of Science and Technology, Nanjing
来源：
Hanjie Xuebao/Transactions of the China Welding Institution | 2019年 / 40卷 / 07期
关键词：
Additive manufacturing; Double-wire feeding; Gas tungsten arc; High strength aluminum magnesium alloy;
D O I：
10.12073/j.hjxb.2019400191
中图分类号：
学科分类号：
摘要：
A new gas tungsten arc additive manufacturing process, with two homogeneous aluminum magnesium alloy wires synchronously feeding into same molten pool, was performed to manufacture high strength aluminum magnesium alloy component. Straight wall specimens were deposited by traditional single wire feeding and double-wire feeding gas tungsten arc additive manufacturing process, respectively. The difference in appearance size measurements, optical microscope, mechanical properties of the specimens were comparative studied in details. The results show the deposition rate of the double wire feeding mode is 2.08 times of the single wire feeding. The double wire feeding mode achieves finer grain. Moreover, the ultimate tensile strength of the double wire feeding mode reaches 71% of the 7A52 aluminum magnesium alloy. Compared with the single-wire feeding. the longitudinal ultimate tensile strength improved by 7% and the longitudinal elongation improved by 5% as well. © 2019, Editorial Board of Transactions of the China Welding Institution, Magazine Agency Welding. All right reserved.
引用
收藏
页码：109 / 113
页数：4
相关论文
共 8 条
  • [1] Cong B., Ding J., Influence of CMT process on porosity of wire arc additive manufactured Al-Cu alloy, Rare Metal Materials and Engineering, 43, 12, pp. 3149-3153, (2014)
  • [2] Kang B.Y., Prasad Y.K.D.V., Kang M.J., Et al., Characteristics of alternate supply of shielding gases in aluminum GMA welding, Journal of Materials Processing Technology, 209, 10, pp. 4716-4721, (2009)
  • [3] Nie Y., Zhang P., Zhuang Q., Et al., 4043 aluminum alloy thin-walled parts arc rapid prototyping with cold metal transfer, Transactions of the China Welding Institution, 39, 11, pp. 58-62, (2018)
  • [4] Ding J., Colegrove P., Mehnen J., Et al., Thermo-mechanical analysis of wire and arc additive layer manufacturing process on large multi-layer parts, Computational Materials Science, 50, 12, pp. 3315-3322, (2011)
  • [5] Bai J., Wang J., Lin S., Et al., Width prediction of aluminium alloy weld additively manufacture by TIG arc, Transactions of the China Welding Institution, 36, 9, pp. 87-90, (2015)
  • [6] Miao Y., Zeng Y., Wang T., Et al., Additive manufacturing process of aluminum/steel dissimilar metal metal based on BC-MIG welding, Transactions of the China Welding Institution, 36, 7, pp. 5-8, (2015)
  • [7] Shen C., Pan Z., Cuiuri D., Et al., Fabrication of Fe-FeAl functionally graded material using the wire-Arc additive manufacturing process, Metallurgical and Materials Transactions B, 47, 1, pp. 763-772, (2016)
  • [8] Shen C., Pan Z., Ma Y., Et al., Fabrication of iron-rich Fe-Al intermetallics using the wire-arc additive manufacturing process, Additive Manufacturing, 7, pp. 20-26, (2015)
1