Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
(a) Typical image of a friction welded Al-12Si joint with symmetrical and smooth flash at the joint. (b) Examples of tensile specimens machined from the welded samples [216]. Copyright 2014. Adapted with permission from Elsevier Science Ltd. under the license number 4803771284201 (Figure 1 [216]), dated 7April 2020.
