Abstract
Bead-on-Plate Friction Stir Welding (FSW) joints were produced on 3-mm thick Ultra-fine Bainitic Steel using polycrystalline cubic boron nitride (PcBN) tool. The rotational speeds employed include 80, 100, 150, and 200 rpm. All the weld joints were prepared at a traverse speed of 35 mm/min. The noncontact online thermography has been used to measure interface temperature between the top surface of plate and bottom of the tool shoulder bottom. This measurement enabled to determine the peak temperature reached in the stir zone (SZ) during FSW. The interface temperatures at all rotational speeds are ~below 673 K. The microstructure in the base metal (BM) is composed of carbide-free bainite and retained austenite. After FSW, the weld joint revealed BM, stir zone (SZ), and thermomechanically affected zone (TMAZ). The retained austenite decreased with increasing rotational speed in SZ and there has been a gradual transition of microstructure in the TMAZ. Stir zone exhibited higher hardness compared to BM. Maximum hardness in SZ occurred at 150 rpm.
Access this chapter
Tax calculation will be finalised at checkout
Purchases are for personal use only
References
S. Das and A. Haldar, Continuously cooled Ultrafine Bainitic Steel with Excellent Strength-Elongation Combination, Metallurgical and Materials Transactions A, 45A (2014), 1844–1854
V.L. Manugula, K.V. Rajulapati, G.M. Reddy, R, Mythili and K.B.S. Rao, A critical assessment of the microstructure and mechanical properties of friction stir welded reduced activation ferritic-martensitic steel, Material and Design, 92 (2016), 200–212
Z. Feng, D. Hoelzer, M.A. Sokolov and L.T. Tan, Friction stir welding of ODS Steels and Advanced Ferritic Martensitic Steels Oak Ridge National Laboratory Fusion Reactor Materials Program, June 30, (2013), DEC/ ER-0313/54-Vol. 54
Author information
Authors and Affiliations
Corresponding author
Editor information
Editors and Affiliations
Rights and permissions
Copyright information
© 2018 Springer Nature Singapore Pte Ltd.
About this chapter
Cite this chapter
Ramakrishna R, V.S.M., Gautam, J.P., Madhusudhan Reddy, G., Bhanu Sankara Rao, K. (2018). Recent Advances in Welding of High-Strength Bainitic Steel for Automotive Applications. In: Roy, T., Bhattacharya, B., Ghosh, C., Ajmani, S. (eds) Advanced High Strength Steel. Lecture Notes in Mechanical Engineering. Springer, Singapore. https://doi.org/10.1007/978-981-10-7892-7_9
Download citation
DOI: https://doi.org/10.1007/978-981-10-7892-7_9
Published:
Publisher Name: Springer, Singapore
Print ISBN: 978-981-10-7891-0
Online ISBN: 978-981-10-7892-7
eBook Packages: EngineeringEngineering (R0)