Re: Armchair metallurgy
The bubble source is completely different. In concrete the bubbles result from air entrapment, can shake them out before the concrete solidifies. In metal casting, bubbles form at the point of solidification. The molten metal contains dissolved gases that come out of solution when the metal cools and solidifies. Can be reduced by casting in a vacuum or inert gas.
I suspect casting a high-temperature alloy would pose some problems.
- Geek's Guide to Britain Kingston's aviation empire: From industry firsts to Airfix heroes
- Analysis Happy 2nd birthday, Windows 8 and Surface: Anatomy of a disaster
- Review Vulture trails claw across Lenovo's touchy N20p Chromebook
- Adobe spies on readers: EVERY DRM page turn leaked to base over SSL
- Analysis The future health of the internet comes down to ONE simple question…