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.
Scanning electron microscopy (SEM) images of the welds from the batch I after small punch test: (a) top view of the specimen obtained at 1500 rpm (RW1); (b) top view of the specimen obtained at 3500 rpm (RWA1); (c) higher magnification of the rupture–RW1; (d) higher magnification of the rupture–RWA1.
