Systematic Investigation of the Diffusion Welding Behavior of the Austenitic Stainless Steel 304 (1.4301)

The deformation behavior of SS 304 is investigated at three diffusion welding temperatures and different durations. Samples 100 mm in height consisting of five pieces and manufactured from pultrusion round stock are used for studying the diffusion across the bonding planes. The joining cross‐section...

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Bibliographic Details
Published in:Advanced engineering materials 2014-11, Vol.16 (11), p.1381-1390
Main Authors: Gietzelt, Thomas, Toth, Volker, Huell, Andreas, Messerschmidt, Florian, Dittmeyer, Roland
Format: Article
Language:English
Subjects:
Austenitic stainless steels
Covering
Deformation
Diffusion
Diffusion welding
Mathematical analysis
Pultrusion
Welding
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Summary:The deformation behavior of SS 304 is investigated at three diffusion welding temperatures and different durations. Samples 100 mm in height consisting of five pieces and manufactured from pultrusion round stock are used for studying the diffusion across the bonding planes. The joining cross‐section varies from top to bottom covering bonding pressures from 15 to 25 MPa. From the results, a regression equation is derived allowing the calculation of expected deformation for any other temperature and duration within the investigated range. The approach is validated by an experiment with arbitrary temperature and welding duration. To study the influence of the grain size, orientation and passivation layers, a sample made of 51 sheets, 2 mm in thickness each, is diffusion welded and the results are compared. Diffusion welding experiments are performed on SS 304. Conical samples, covering bearing pressures of 15–25 MPa are subjected to different temperatures and welding durations. A 3D‐fit is derived, allowing the prediction of the deformation within the investigated range. Additionally, the deformation behavior of pultrusion and sheet material is compared.
ISSN:1438-1656
1527-2648
DOI:10.1002/adem.201400035