The lowest possible melting point of a eutectic magnesium alloy is 342c or 648f.
Indeed, and that was the lowest possible Alloy. I'm not aware of the exact mixture so I chose the absolute minimum eutectic alloy to give the maximum benefit of doubt. Eutectic Mg-Al alloy melting point is 819f/437c. it wouldn't be unrealistic to assume greater than 500c. I once heard there was also copper in the alloy to increase the thermal heat transfer which would also raise the melt point.I believe the aluminum-magnesium alloy used for the SP3 doesnt have the eutectic composition. The melting point is certainly much higher than 342C.
Let them believe their SP3 is made out of chocolate.
What from any of that would lead one to conclude a mere 45c case temperature would amount to a micron mole hills difference. Good Lord the education system has completely failed.Which absolutly doesn't matter! Because in this case here we don't want to meld a Surface 3 we want to bend a Surface 3!
And as we now all know you can easily bend a iPhone 6! Even tough it's cold.
So ? Do we have a force on our surface 3 or are we just calculating the bend trough expansion due temperature? Let's use later...
What alloy do we have on our Surface 3 ? Magnesium only ? Magnesium Aluminum? Magnesium Zinc ? Doesn't matter. Thermal expansion coeffcient is about 26x10^-6/Kelvin
Meaning the length of 292,2mm changing from 20°C to 47°C will increase in length by 0,20512mm!
Is this enough to bend? No idea!
Thermal expansion coeffcient is about 26x10^-6/Kelvin
Meaning the length of 292,2mm changing from 20°C to 47°C will increase in length by 0,20512mm!
Is this enough to bend? No idea!
I once heard there was also copper in the alloy to increase the thermal heat transfer which would also raise the melt point.
Oh you've done it now.. the corrosion angle will be next...With aluminum, copper creates Al2Cu particles, wich are very good at high temprature. There are much more stable than other type of particles (Mg2Si for instance) and help a lot to keep the material "harder" during a much longer long time.
In the automotive industry, we rely a lot on these precipitates to make your engine work until 300000 km. Particularly the cylinder heads, which are made out of Al-Si-Cu-Mg alloys. Most of the time the are also heat treated to ensure the best mechanical properties.
And it's also true that copper increases the thermal heat transfer but it makes the alloy more sensitive to corrosion.
Oh you've done it now.. the corrosion angle will be next...
I spilled OJ or tomato sauce on my Surface and it corroded, run for the hills