2014 vs 6061 vs 7075 aluminium components
Aluminum alloy 2014 is often used in the aircraft industry for structural support beams and the auto industry for truck frames. 
See metallurgy reference.  It outta be just fine for a chainring.

Alloy 2014 T6 has a Tensile strength (ability to resist stretching forces) of about 483 MPa which is comparable to structural steel and much higher than 6061 T6 aluminum's 300 MPa.  This strength is achieved with a tremendous weight savings (as opposed to steel).    All this is to say that it appears the 2014 aluminum is stiffer than some other possible materials which is beneficial in a crankset so that more pedalling power goes to crank rotation and not lost through material flex.

Regarding cracking, that increased susceptibility of 2014 is confined to manufacturing processes such as welding, where special support of the piece is required, or where bending the alloy is needed, avoiding sharp turns is necessary.    Oxidation prevention in pieces made of 2014 alloy is carried out by bonding a thin layer of pure aluminum (a "skin") or some form of painting, anodizing or powder coating to the outside.