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| Aluminum Copper Alloy Experiment |
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| NormanV:
Ok, thanks for the quick response Andrew. When it's cooled down enough to handle I'll put it back in the kiln to heat treat it and try machining it this evening. |
| NormanV:
Well, I did the heat treatment, I heated it until it just started to melt and then dunked it in water. I machined it today, it cut quite well but I noticed that the surface that I achieved was not as good as the sample that Steve showed earlier in this thread. On close examination I saw that I am getting lots of tiny bubbles. I have said previously that I do not de-gas. Next time I melt some metal I will try it to see if it makes a difference for me. |
| Biggles:
If you really want a hard alloy try Beryllium with Copper. It’s used to cover expensive golf clubs and can be used for armour piercing bullets! |
| NormanV:
I did a little experiment today, not precise but it gave a ball park comparison of the aluminium/copper alloy and the normal alloy that I use that is car wheels melted down. I used a centre punch and a club hammer. I arranged it so that the club hammer dropped a repeatable distance onto the centre punch and then measured the resulting punch mark using a magnifier. The copper alloy gave a punch mark 1mm dia and the plain alloy 2mm dia. I can deduce from this that the addition of copper results in a harder alloy. :) |
| awemawson:
:clap: |
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