what would the properties of Iron that has been compressed under 3 million atmospheres of pressure then expanded rapidly under explosive decompression, nickel-iron crystal lattices? would it have different metallurgical properties?

“The Core” a very bad movie that defies all possibility of scientific accuracy in telling the story of a group sent to the core of the earth in a ship made of a mysterious new substance with ridiculously improbable properties to Restart the core spinning after a military geo weapon caused it to stop spinning.

as opposed to show-boating and press ops like the shuttle program became in the late 80s.