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Weld Seam Properties of TRIP 690 tubes

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Title: Weld Seam Properties of TRIP 690 tubes
Author: Thirumalai Ananthapillai, Bharathwaj
Department: School of Engineering
Program: Engineering
Advisor: Bardelcik, Alexander
Abstract: Production of seam welded, and roll formed tubes have been a core part of hydroformed automotive structural components. With the emergence of Advanced High Strength Steels (AHSS), most automotive companies are shifting from conventional steels to AHSS for vehicle light weighting considerations. TRIP690 steel possesses high strength, high strain hardening capacity and excellent ductility properties, making them excellent candidates for convention roll forming where induction seam welds are employed. Due to subsequent forming operations of these roll formed tubes, the seam weld properties are of great importance in order to prevent fracture during forming. In this work the induction seam weld frequency was varied during the tube making process and the resultant welds were characterized. The centerline hardness distribution and 2D hardness contour distribution of the welds were quantified, along with the microstructural distribution within the welds. A modified split ring hoop tensile test (SHRTT) was developed to test the fracture response of these tubes.
Date: 2019-12-16
Rights: Attribution-NonCommercial-NoDerivatives 4.0 International
Terms of Use: All items in the Atrium are protected by copyright with all rights reserved unless otherwise indicated.
Embargoed Until: 2020-12-15

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Attribution-NonCommercial-NoDerivatives 4.0 International Except where otherwise noted, this item's license is described as Attribution-NonCommercial-NoDerivatives 4.0 International