Effect of Cooling Rate Applied to Aluminum Composites on Hardness and Wear Resistance
Metin Önal1*, Mehmet Gavgalı2
1Elektrik ve Enerji Bölümü/Erciş Meslek Yüksekokulu, Yüzüncü Yıl Üniversitesi , Van, Turkey
2Atatürk University, Erzurum, Turkey
* Corresponding author: monal@yyu.edu.tr
Presented at the Ist International Symposium on Innovative Approaches in Scientific Studies (ISAS 2018), Kemer-Antalya, Turkey, Apr 11, 2018
SETSCI Conference Proceedings, 2018, 2, Page (s): 475-475 , https://doi.org/
Published Date: 23 June 2018 |
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Abstract
Cooling process applied to complete sintering cycle of aluminum composites produced by hot pressing method has a great effect on grain size, hardness and wear resistance. In order to obtain a fine-grained microstructure, increase hardness and reduce amount of wear, cooling process of the composites was carried out in two stages. First of these is 12 m3/minute cold air flow blowing on punch connected to mold during time composites descended to
semi-liquid/semi-solid temperature and second is 0.35 L/min constant water flow given to bottom mold after composites are removed from furnace. After increasing cooling rate in this way, it was observed to rise that the hardness and wear resistance to a half fold.
Keywords - cooling rate, hardness, wear resistance
References