Argentina’s pressure earned them an equalizer in the 85th minute when Fernandez scored from outside the box.
In the 92nd minute, Martínez made a dent in the middle of England’s defense and took his team to the final.
Alexis McAllister hit the woodwork twice and England keeper Jordan Pickford made a crucial one-handed stop to deny Nico Gonzalez’s goal-bound header in the 69th minute.
The match began at a fast pace and tempers grew repeatedly as American referee Ishmael Elfath struggled to maintain control.