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Published in: Metallurgical and Materials Transactions A 9/2009

01-09-2009 | Communication

Microstructural Characterization of High-Strength Steel Lap Joint Produced by Friction Spot Joining

Authors: R. Ohashi, M. Fujimoto, S. Mironov, Y.S. Sato, H. Kokawa

Published in: Metallurgical and Materials Transactions A | Issue 9/2009

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Abstract

Friction spot joining (FSJ) was applied to DP590 steel using an uncoated Si3N4 tool without using shielding gases. The microstructural distribution and microstructural evolution of the steel were systematically examined. A defect-free joint exhibited a heterogeneous microstructural distribution, which could be explained mainly by the phase transformation at different peak temperatures during joining. Further, an elliptical region near the pinhole was contaminated by oxygen, silicon, and nitrogen. These contaminants strongly affected the microstructural evolution of the joint.

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Metadata
Title
Microstructural Characterization of High-Strength Steel Lap Joint Produced by Friction Spot Joining
Authors
R. Ohashi
M. Fujimoto
S. Mironov
Y.S. Sato
H. Kokawa
Publication date
01-09-2009
Publisher
Springer US
Published in
Metallurgical and Materials Transactions A / Issue 9/2009
Print ISSN: 1073-5623
Electronic ISSN: 1543-1940
DOI
https://doi.org/10.1007/s11661-009-9892-3

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