Strengthen CP Al, Mild Steel & HCP Titanium: Tips & Techniques

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To strengthen commercially pure aluminum, rolling followed by normalizing is suggested. For Fe-0.2%C mild steel, forming martensite and then tempering is recommended, although forming lower bainite is also a consideration. Commercially pure titanium can be strengthened through methods like cold or hot working, as it is non-heat treatable. Surface-hardening techniques such as shot peening may enhance titanium and its alloys, but titanium does not work harden as effectively as most steels. Overall, a combination of mechanical working and heat treatment strategies can be effective for strengthening these materials.
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Using furnace and a rolling mill, how to strengthen these?
(i)Commercially pure aluminium
(ii) Fe-0.2%C (mild steel)
(iii)Commercially pure Titanium (HCP metal; 2 methods can be used)

How to strengthen these?
For (i), is that just roll it and then normalise it?
For(ii), forming martensite and then temper it or should be forming lower banite directly?
For(iii), again rolling? unlikely...

I am really nore sure about these...could anyone kindly help?
 
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1) Add alloying elements or strain harden.
2) Heat to autenitic range and quench to martensite.
3) Since alpha alloys are non heat treatable, some form of cold or hot working (not quite sure on that one)
 
(iii)I've heard of surface-hardening of Ti and Ti-alloys by shot peening. I imagine rolling will work too but I do believe Ti does not work harden as much as most steels.
 

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