OpenTechnical
This is a record of a document published elsewhere, first published by the United States Patent and Trademark Office, as US-12599987-B2, on 14 April 2026. OpenTechnical did not first disclose it. The identifier, hashes and timestamps below record what this library served and when, not when the material became public. View the original.

OT-2026-000000833

Friction stir spot welded joint and production method therefor, and friction stir spot welding method

Published
Permanent URL
Classification
Manufacturing & Assembly Equipment › Joining and Welding
Original source
US-12599987-B2, the United States Patent and Trademark Office, 14 April 2026
Document SHA-256
c634fce09898f85917acdfd5d6682c98df3c4e9fc274a62b01f58deb999c72c7

Abstract

Provided is a friction stir spot welded joint having high joint strength even in the case where a high strength steel sheet, particularly a steel sheet with a tensile strength (TS) of 980 MPa or more, is used as a material to be welded. An annular groove is formed on an upper surface of an upper sheet out of overlapping steel sheets, and a shape, microstructure, and hardness of a welded portion are appropriately controlled simultaneously.

Publication information

Plain textMarkdownManifestIntegrity record

Citation

OpenTechnical Publication OT-2026-000000833, “Friction stir spot welded joint and production method therefor, and friction stir spot welding method,” published September 15, 2026 at 19:03:27 UTC, https://opentechnical.org/p/OT-2026-000000833.

To cite specific content, add the paragraph or figure numbers.

Terms

This record reproduces a document published elsewhere and is provided for reference and study. Rights in the original remain with its owner. See the publication policy.