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Hydroforming Behaviour of TIG-Welded Tubes of Austenitic Stainless Steel
Journal
Minerals, Metals and Materials Series
ISSN
23671181
Date Issued
2022-01-01
Author(s)
Krishnamraju, M.
Sahu, Sandeep
Singh, Amarjeet Kumar
Narasimhan, K.
Abstract
Tube hydroforming is an emerging manufacturing technique that uses pressurized fluid to deform the metal tubes into the desired shape. It is carried out by keeping tubular blank in the die, then deforming it into the final shape by applying fluid pressure using axial punches. Hollow components from TIG welded tubes of Austenitic stainless steels, AISI304 find automobile applications, particularly exhaust systems. The microstructure has strong effect on formability of AISI 304 tubes and therefore the effect of microstructure on the formability of tube is required to understand the correlation between microstructure and formability. Hence, in the present study, TIG weld tubes of AISI304 deformed and deformation behaviour is studied in comparison with bulge ratio and grain size effect. It was noticed that bulge height (deformation) decreased with increased bulge width and fracture surface observed was ductile nature along with fine grains.
Subjects