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Filler powder free joining of SAF 2507 using selective microwave hybrid heating technique

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Title Filler powder free joining of SAF 2507 using selective microwave hybrid heating technique
 
Creator Singh, Parminder
Prajapati, Deo Raj
Sehgal, Shankar
 
Subject Micro-hardness
Microwave Hybrid Heating (MHH)
SAF 2507
Scanning Electron Microscopy (SEM)
Energy Dispersive Spectroscopy (EDS)
 
Description 307-311
Microwave Hybrid Heating (MHH) based joining of super duplex stainless steel (SAF 2507) with cross-sectional
dimensions 3.5 mm ×3 mm has been carried out for the first time by using a microwave applicator of 900 W operated at
2.45 GHz for 400 s. Graphite rods have been used instead of traditionally used charcoal powder to serve as susceptor
material. Graphite rods are good susceptor of microwave radiations therefore the presence of these rods helps in initiating
and carrying forward the joining process. Moreover, the melting temperature can be achieved for specimens under
investigations through this novel process thereby eliminating the need of using any filler powder. Absence of filler powder
reduces the process cost significantly. The joints have been mechanically characterized by Vickers micro-hardness and
physically characterized by Scanning Electron Microscopy (SEM) and Energy Dispersive Spectroscopy (EDS) tests. It has
been observed through these tests that micro-hardness of the joints was more than the base alloy due to transfer of carbon
from graphite rods to the joint zone.
 
Date 2022-07-06T09:36:18Z
2022-07-06T09:36:18Z
2022-06
 
Type Article
 
Identifier 0975-1017 (Online); 0971-4588 (Print)
http://nopr.niscpr.res.in/handle/123456789/60071
 
Language en
 
Publisher NIScPR-CSIR, India
 
Source IJEMS Vol.29(3) [June 2022]