Wear related study on the precipitation hardened al7075-grey cast iron particulate reinforced composites

U. Achutha Kini, Jamaluddin Hindi, Sathya Shankara Sharma

Research output: Contribution to journalArticle

Abstract

In this study Al7075 alloy is reinforced with grey cast iron (GCI) particulates using two step stir casting method. The weight percentages of reinforcements were varied in steps of 2wt% from 2-6wt%. The combined effect of reinforcements and precipitation hardening treatment on wear resistance was studied. The wear resistance of the composite was correlated with the base matrix material. The effect of variation in aging temperature on the improvement in wear related properties were studied. The desirable properties were enhanced as the weight percentage of reinforcements increased both in as cast and heat treated condition. The aging process was accelerated due to the presence of articulate reinforcements. The combined effect of GCIp and age hardening at 100ᴼC significantly improves the wear resistance. There is an increase in the number of nucleation sites for the precipitation of finer secondary phase particles due to the presence of reinforcement particulates.

Original languageEnglish
Pages (from-to)703-708
Number of pages6
JournalInternational Journal of Mechanical and Production Engineering Research and Development
Volume9
Issue numberSpecial Issue 2
Publication statusPublished - 01-01-2019

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Cast iron
Reinforcement
Wear of materials
Composite materials
Wear resistance
Age hardening
Aging of materials
Casting
Nucleation
Temperature

All Science Journal Classification (ASJC) codes

  • Aerospace Engineering
  • Mechanical Engineering
  • Fluid Flow and Transfer Processes

Cite this

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abstract = "In this study Al7075 alloy is reinforced with grey cast iron (GCI) particulates using two step stir casting method. The weight percentages of reinforcements were varied in steps of 2wt{\%} from 2-6wt{\%}. The combined effect of reinforcements and precipitation hardening treatment on wear resistance was studied. The wear resistance of the composite was correlated with the base matrix material. The effect of variation in aging temperature on the improvement in wear related properties were studied. The desirable properties were enhanced as the weight percentage of reinforcements increased both in as cast and heat treated condition. The aging process was accelerated due to the presence of articulate reinforcements. The combined effect of GCIp and age hardening at 100ᴼC significantly improves the wear resistance. There is an increase in the number of nucleation sites for the precipitation of finer secondary phase particles due to the presence of reinforcement particulates.",
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Wear related study on the precipitation hardened al7075-grey cast iron particulate reinforced composites. / Achutha Kini, U.; Hindi, Jamaluddin; Sharma, Sathya Shankara.

In: International Journal of Mechanical and Production Engineering Research and Development, Vol. 9, No. Special Issue 2, 01.01.2019, p. 703-708.

Research output: Contribution to journalArticle

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