Preprint Article Version 1 This version is not peer-reviewed

Brazing Studies of Ti- Joint Using Ti20Zr20Cu60-xNix (x = 30, 40, and 50) Metallic Glass Ribbon as Filler Metal

Version 1 : Received: 12 June 2018 / Approved: 20 June 2018 / Online: 20 June 2018 (03:31:13 CEST)

How to cite: Panugothu, R.R.; Bhatnagar, A.K.; Majumdar, B.; Bysakh, S. Brazing Studies of Ti- Joint Using Ti20Zr20Cu60-xNix (x = 30, 40, and 50) Metallic Glass Ribbon as Filler Metal. Preprints 2018, 2018060309 (doi: 10.20944/preprints201806.0309.v1). Panugothu, R.R.; Bhatnagar, A.K.; Majumdar, B.; Bysakh, S. Brazing Studies of Ti- Joint Using Ti20Zr20Cu60-xNix (x = 30, 40, and 50) Metallic Glass Ribbon as Filler Metal. Preprints 2018, 2018060309 (doi: 10.20944/preprints201806.0309.v1).

Abstract

The present study investigation, our results on characterization of commercially pure-Ti alloy brazed with metallic glass ribbons of Ti20Zr20Cu60-xNix (x = 30, 40, and 50) metallic glass ribbons were produced using a vacuum melt spinner. These ribbons were then used as filler materials for vacuum brazing of two Ti alloy plates at 1268, 1277 and 1279 K for a period of 10 min. Field-Emission Scanning Electron Microscopy (FESEM), Transmission Electron Microscopy (TEM) and the energy dispersive X-ray spectroscopy (EDX). The as-spun ribbons showed fully amorphous structure when examined on both surfaces by XRD and also verified by TEM investigation. The brazing joint of two Ti-plates using the metallic glass ribbon when brazed with Ni50 was found to be of very high strength. FESEM characterization of the cross-section of the brazed joints shows sub-micron size grains uniformly distributed in the matrix with brighter appearance. FESEM and EDX analysis revealed that the sub-micron grains are rich in Ti & Ni while the matrix phase mainly consisted of Ti. BSE image along with EDS Analysis indicated that the brazed joint has a presence of NiTi2 and Cu2 (Ni Zr) phases which could be responsible for increase in the strength of the brazed joint.

Subject Areas

metallic glasses; Ti-alloy; microstructure; scanning electron microscopy and transmission electron microscopy

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