Resistance upset welding of Zr-based bulk metallic glasses

Author(s)

Andreoli, Angelo Fernandes ^[1] ; Ponsoni, Jessica Bruna ^[2] ; Soares, Carolina ^[1] ; de Oliveira, Marcelo Falcao ^[1] ; Kiminami, Claudio Shyinti ^[2]

Affiliation

^[1] Univ Sao Paulo, Sao Carlos Sch Engn, Mat Sci & Engn Dept, Ave Joao Dagnone 1100, BR-13563120 Sao Carlos, SP - Brazil

^[2] Univ Fed Sao Carlos, Mat Sci & Engn Dept, Rodovia Washington Luis, Km 235 CP 147, BR-13565905 Sao Carlos, SP - Brazil

• Document type: Journal article
• Source: Journal of Materials Processing Technology; v. 255, p. 760-764, MAY 2018.
• Web of Science Citations: 3

Abstract

Zr-based bulk metallic glasses represent an emerging important class of structural materials with interesting properties due to its amorphous nature. In this study, the structural and microstructural transformations to the heat-affected zone of a Zr-based bulk metallic glass welded by the resistance upset technology were investigated. X-ray diffraction, optical and scanning electron microscopy were used to characterize the base metal and the heat-affected zone. Vickers microhardness testing was performed to assess the mechanical response of the welded joints. The amorphous phase volume fraction measured along the welded joints shows no difference between the base metal and the heat-affected zone. It was possible to achieve a sound weld with no crystallization of the base metal. (AU)

• FAPESP's process: 13/05987-8 - Processing and characterization of amorphous, metastable and nano-structured metallic alloys
• Grantee: Claudio Shyinti Kiminami
• Support Opportunities: Research Projects - Thematic Grants