NDLI: Joint formation mechanism and strength in resistance microwelding of 316L stainless steel to Pt wire

Content Provider	Springer Nature Link
Author	Chen, Zheng
Copyright Year	2007
Abstract	Resistance microwelding of 316L stainless steel to Pt wire has been performed. The interfacial metallurgical phenomena, joint breaking force and fracture mode were investigated using scanning electron microscopy, energy-dispersive X-ray spectroscopy and tensile-shear testing. The results showed that a solid-state bonding was achieved at the interface when the welding current was low and/or the weld time was short, whereas a bonding with fusion of materials was observed at high welding current. Melting of the stainless steel was more significant than that of the Pt wire. The amount of melted materials and bonded area increased with increasing welding current and/or weld time. At a low welding current, e.g., 500 A, all the joints fractured at the interface and the joint breaking force rapidly increased when weld time prolonged from 2 ms to 10 ms owing to increased bonded area. At a medium welding current, e.g., 750 A, the joints demonstrated different fracture mode, e.g., at the interface, a mixed failure at the interface and in the Pt wire as well as completely within the Pt wire, as the weld time increased. On the other hand, at a high welding current, e.g., 1,000 A, the stainless steel was greatly melted and softened into which the Pt wire penetrated and all the joints fractured in the Pt wire. The joint breaking force first increased with increasing weld time and subsequently decreased after reaching a peak value. The effects of materials properties on dissimilar materials resistance welding process were also discussed.
Starting Page	5756
Ending Page	5765
Page Count	10
File Format	PDF
ISSN	00222461
Journal	Journal of Materials Science
Volume Number	42
Issue Number	14
e-ISSN	15734803
Language	English
Publisher	Kluwer Academic Publishers-Plenum Publishers
Publisher Date	2007-04-14
Publisher Place	New York
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Mechanics Crystallography Continuum Mechanics and Mechanics of Materials Polymer Sciences Characterization and Evaluation of Materials Materials Science
Content Type	Text
Resource Type	Article
Subject	Ceramics and Composites Mechanics of Materials Mechanical Engineering Polymers and Plastics

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