Fe-Mn vibration damping alloy steel and a method for making the same

A method for making an Fe-Mn vibration damping alloy steel, comprising the steps of:

• melting an alloy consisting of, 10 to 24% manganese by weight, iron and incidental impurities to produce a melted alloy;
• the iron and incidental impurities together constitute the remaining percentage by weight;
• subsequently, casting the melted alloy into a mold to produce a metal ingot;
• subsequently, heating the ingot at a temperature of 1000.degree. C. to 1300.degree. C. for 12 to 40 hours to homogenize the ingot, and hot-rolling the homogenized ingot to produce a rolled alloy steel;
• subsequently, performing a solid solution treatment on the alloy steel at 900.degree. to 1100.degree. C. for 30 to 60 minutes;
• subsequently, cooling the alloy steel by air or water to room temperature;
• and
• subsequently, cold rolling the alloy steel at a reduction rate of greater than 0% and less than 30% around room temperature to increase the vibration damping capacity.