Patent 11059125 was granted and assigned to Mazak Corporation on July, 2021 by the United States Patent and Trademark Office.
A friction stir processing (FSP) tool includes a pin having a pin body and a rotational axis. The pin is configured to rotate about the rotational axis in a rotational direction. The pin has a radial protrusion protruding radially from the pin body, and the radial protrusion has a working surface oriented in the rotational direction with a depth in a radial direction relative to the rotational axis.