Effect of precipitation hardening on stir cast AL6061-B4C reinforced composite

M. C. Gowri Shankar, P. K. Jayashree, Sathyashankara Sharma, Achutha Kini

Research output: Contribution to journalArticle

Abstract

The focus of the present investigation is to enhance mechanical properties of two-stage stir cast Al6061-B4C (2, 4 and 6 wt.%) reinforced metal matrix composites by artificial aging treatment. The Optical and Scanning Electron Microscope show homogeneous distribution of reinforcements in the aluminum matrix. The composites were solutionized at 558ᴼC for 2 h and followed by water quenching. The samples were subjected to aging treatment in the range of 100, 150 and 200ᴼC for different time intervals. Lower aging temperature and higher aging time show substantial enhancement in hardness and tensile strength. Around 170% improvement in hardness and 100% improvement in tensile strength values were observed when aged at 100ᴼC with an increased weight percentage of reinforced particulates as compared to the unreinforced Al6061 alloy.

Original languageEnglish
Article numberIJMPERDOCT201851
Pages (from-to)459-466
Number of pages8
JournalInternational Journal of Mechanical and Production Engineering Research and Development
Volume8
Issue number5
DOIs
Publication statusPublished - 01-01-2018

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Age hardening
Aging of materials
Composite materials
Tensile strength
Hardness
Aluminum
Quenching
Reinforcement
Electron microscopes
Metals
Scanning
Mechanical properties
Water
Temperature

All Science Journal Classification (ASJC) codes

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

Cite this

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abstract = "The focus of the present investigation is to enhance mechanical properties of two-stage stir cast Al6061-B4C (2, 4 and 6 wt.{\%}) reinforced metal matrix composites by artificial aging treatment. The Optical and Scanning Electron Microscope show homogeneous distribution of reinforcements in the aluminum matrix. The composites were solutionized at 558ᴼC for 2 h and followed by water quenching. The samples were subjected to aging treatment in the range of 100, 150 and 200ᴼC for different time intervals. Lower aging temperature and higher aging time show substantial enhancement in hardness and tensile strength. Around 170{\%} improvement in hardness and 100{\%} improvement in tensile strength values were observed when aged at 100ᴼC with an increased weight percentage of reinforced particulates as compared to the unreinforced Al6061 alloy.",
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Effect of precipitation hardening on stir cast AL6061-B4C reinforced composite. / Gowri Shankar, M. C.; Jayashree, P. K.; Sharma, Sathyashankara; Kini, Achutha.

In: International Journal of Mechanical and Production Engineering Research and Development, Vol. 8, No. 5, IJMPERDOCT201851, 01.01.2018, p. 459-466.

Research output: Contribution to journalArticle

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AB - The focus of the present investigation is to enhance mechanical properties of two-stage stir cast Al6061-B4C (2, 4 and 6 wt.%) reinforced metal matrix composites by artificial aging treatment. The Optical and Scanning Electron Microscope show homogeneous distribution of reinforcements in the aluminum matrix. The composites were solutionized at 558ᴼC for 2 h and followed by water quenching. The samples were subjected to aging treatment in the range of 100, 150 and 200ᴼC for different time intervals. Lower aging temperature and higher aging time show substantial enhancement in hardness and tensile strength. Around 170% improvement in hardness and 100% improvement in tensile strength values were observed when aged at 100ᴼC with an increased weight percentage of reinforced particulates as compared to the unreinforced Al6061 alloy.

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