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Iterative Taguchi Analysis: Optimizing The Austenite Content And Hardness In 52100 Steel

From Lambda Technologies
 

 

Three iterations of Taguchi designed experiments and
analyses were used to determine optimal thermal
treatments for minimizing retained austenite content
while maximizing Rockwell hardness (HRC) in AISI
52100 bearing steel. Experimental variables chosen
for this study included austenitizing and tempering
temperatures, tempering time and cold treatment.
After one iteration, tempering temperature and cold
treatment were seen to have the greatest effect on
austenite content while austenitizing and tempering
temperatures had the greatest influence on hardness.
After the second and third experimental iterations,
two thermal treatments were noted each producing
hardness of 58-59 HRC in combination with zero
retained austenite as measured by x-ray diffraction.

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