Hot-wire arc additive manufacturing of aluminum alloy with reduced porosity and high deposition rate

Rui Fu, Shuiyuan Tang, Jiping Lu, Yinan Cui, Zixiang Li, Haoru Zhang, Tianqiu Xu, Zhuo Chen, Changmeng Liu - School of Mechanical Engineering, Beijing Institute of Technology / School of Aerospace Engineering, Tsinghua University

Wire arc additive manufacturing (WAAM) technology has attracted considerable interest in large-scale metallic components, but porosity and low deposition rate are the two dominating technical challenges in WAAM of aluminum alloy. In order to effectively solve these problems, a novel method of hot-wire arc additive manufacturing is used to fabricate aluminum alloy. Systematic studies are carried out to investigate the formation mechanism of the pores, the macro/microstructures, as well as the mechanical properties of the parts.

How Amira-Avizo Software is used

The microscopic pores were examined by X-ray computed tomography (XCT) […]. The number, the equivalent diameter and the spatial distribution of the pores obtained by XCT were counted by the Avizo 9 software.