Joining of Zr51Ti5Ni10Cu25Al9 BMG to aluminum alloy by friction stir welding. (October 2015)

• Record Type: Journal Article
• Authors: Zhang, Hao; Lu, Yunzhuo; Huang, Yongjiang; Feng, Aihan; Qin, Zuoxiang; Lu, Xing
• Is Part Of: Vacuum. Volume 120(2015)Part A
• Page Start: 47
• Page End: 49
• Publication Date: 2015-10
• Subjects: Friction stir welding -- Bulk metallic glass -- Aluminum alloy; Vacuum -- Periodicals; 621.55
• DOI: 10.1016/j.vacuum.2015.06.020
• Languages: English
• ISSNs: 0042-207X

Abstract

Abstract: Plates of Zr51 Ti5 Ni10 Cu25 Al9 bulk metallic glass (BMG) and 7075 aluminum alloy were successfully joined by friction stir welding (FSW). On the aluminum alloy side near the interface, some BMG fragments with irregular shapes and different sizes are found distributed in the nugget zone. The hardness of 7075 aluminum alloy first decreases and then increases as the distance away from the weld interface. The harness of BMG firstly increases as the position moves away from the weld interface. Then the hardness decreases and keeps constant at about 540 Hv. The evolution of the hardness in the BMG side is closely related to the variation of free volume in the glassy alloy. Highlights: Zr51 Ti5 Ni10 Cu25 Al9 bulk metallic glass and 7075 aluminum alloy were successfully joined by friction stir welding. The hardness of 7075 aluminum alloy first decreases and then increases as the distance away from the weld interface. The evolution of the hardness in the BMG side is related to the variation of free volume.