SME MF920139

A NEW MICROALLOYED, MULTIPHASE, LOW-CARBON STEEL HAS BEEN DEVELOPED AS AN ALTERNATIVE TO THE QT STEELS TRADITIONALLY USED IN THE FABRICATION OF HIGH-STRENGTH COLD- FORGED PRODUCTS. THE BENEFITS OF THIS NEW STEEL INCLUDE: (1) THE ELIMINATION OF SPHEROIDIZE ANNEALING PRIOR TO COLD FORMING; (2) THE ELIMINATION OF THE QT HEAT TREATMENT AFTER THE DEFORMATION, AND (3) THE ABILITY TO ACHIEVE IN THE FINAL COMPONENT YIELD STRENGTHS OF DESIRED LEVELS, HIGH-FATIGUE RESISTANCE AND VERY HIGH-NOTCH TOUGHNESS. THE EXCELLENT PROPERTIES EXHIBITED BY THIS STEEL ARE A DIRECT RESULT OF THE ADVANCED THERMOMECHANICAL OR CONTROLLED PROCESSING OF THE AUSTENITE DURING BAR AND/OR ROD ROLLING. THIS PAPER WILL FIRST BRIEFLY REVIEW THE PHYSICAL METALLURGY OF THIS STEEL AS IT PERTAINS TO COLD FORMING. THIS WILL BE FOLLOWED BY A REVIEW OF INDUSTRIAL TRIALS WHERE VARIOUS COMPONENTS HAVE BEEN COLD FORGED FROM THIS STEE

Product Details

Published:

06/01/1992

Number of Pages:

10

File Size:

1 file , 790 KB