Acceleration corrosion test Method designed to approximate, in a short time, the deteriorating effect under normal long-term service condition.
Acicular ferrite A highly substructured, nonequiaxed ferrite formed upon continuous cooling by a mixed diffusion and shear mode of transformation that begins at a temperature slightly higher than the transformation temperature range for upper bainite. It is distinguished from bainite in that it has a limited amount of carbon available; thus, there is only a small amount of carbide present.
Acid embrittlement A form of hydrogen embrittlement that may be induced in some metals by acid.
Active metal A metal ready to corrode, or being corroded.
Active potential The potential of a corroding material. ...