Public domain
Microgravity
From the collection of NASA Image and Video Library. Free to download, adapt and use — no permission needed.
About this work
Comparison of ground-based (left) and Skylab (right) electron beam welds in pure tantalum (Ta) (10X magnification). Residual votices left behind in the ground-based sample after the electron beam passed were frozen into the grain structure. These occurred because of the rapid cooling rate at the high temperature. Although the thermal characteristics and electron beam travel speeds were comparable for the skylab sample, the residual vortices were erased in the grain structure.
NASA Image and Video Library’s own descriptionCredit lineMicrogravity. NASA/MSFC, 2004-04-15. Public domain. ID: 9000001.
