Assessment of the Austempering Process Parameters to Improve the Wear Resistance of GG-25 Gray Cast Iron
Abdulsamet YILDIRIM Yunus Türen Hayrettin AHLATCI Yavuz Sun Mustafa GUÇLU Hamza Serhat AYDEMIR Mehmet Sami TAKVA
AbstractIn this work, the wear resistance behavior of GG-25 gray cast iron was investigated. Three specimens with different austempering time (120, 90 and 60 minutes) and one specimen, which is not austempering, were used. With this manner it has been tried to examine the effect of the parameters of austempering process on each specimen. Pin-on-disc wear resistance test with one loads (20N) on every specimens has been applied according to of ASTM 99 standards. SEM to observe the microstructures characterized the austempered specimens. In addition, brinnel hardness test was applied. With the results of the wear resistance test, as the austempering time increased, wear resistance also increases.