Effect of CaF 2 addition on macro/microstructures and mechanical properties of wire and arc additive manufactured Ti-6Al-4V components

• DOI: 10.1016/j.matlet.2016.12.128
• Publication Date: 2017-01-04T01:30:39Z
• Authors: Bo Yin; Hongwen Ma; Jingbiao Wang; Kun Fang; Hong Zhao; Yunfeng Liu
• Keywords: 02 engineering and technology; 0210 nano-technology

Abstract A titanium/CaF 2 component was manufactured through the combination of wire and arc additive manufacturing systems as well as activating flux. The effects of CaF 2 on macro/microstructures evolution and mechanical properties were investigated. The results showed that the addition of CaF 2 to Ti-6Al-4V reduced the width of component and the aspect ratio of α-lath, increased β volume fraction, whereas the intermittent grain boundary-α structure was obtained. In addition, tensile strength of the components at room temperature was significantly improved. Consequently, these findings indicated that activating fluxes offered a possibility to produce the desired microstructures and improve mechanical properties of titanium alloys during additive manufacturing.