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Experimental Determination of Forming Limit Diagram for AISI 304
Journal
Minerals, Metals and Materials Series
ISSN
23671181
Date Issued
2022-01-01
Author(s)
Krishnamraju, M.
Kumar, Abhishek
Mishra, Sushil
Narasimhan, K.
Abstract
Metal forming can be defined as deforming the metal into desired shape without any undesired features. In sheet metal forming, forming limit diagram (FLD) is used as a measure for limiting strains that sheet metal can sustain without failure. Hence, forming limit diagram is a vital tool that helps in designing the sheet metal components particularly to aerospace and automobile applications. Austenitic stainless steel is a promising material for automobile and aerospace applications because of its drawablity, weldability in addition to strength and corrosion resistance. FLD for austenitic stainless steel, AISI304, with much focus on microstructure is not addressed. Hence, in the present work, experimental determination of forming limit diagram for annealed sheets of AISI 304 of thickness 1.2 mm is done with microstructure characterization. Different samples are deformed for various strain conditions and validated by numerical analysis in PAM-STAMP 2G simulation. With the help of FLD, formability of AISI 304 stainless steel sheet was predicted and found that experimental data is in good agreement with simulated data.
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