A series of experiments were conducted to determine the Johnson–Cook parameters for three different cast aluminum alloys, namely, A356, A357, and F357. Room temperature compression experiments were performed under varying rates of loading ranging from 10−3 s−1 to 5000 s−1. High temperature compression (235 °C and 435 °C) experiments were performed at an average strain rate of 5000 s−1. A split Hopkinson pressure bar (SHPB) apparatus was utilized in conjunction with an induction coil heating system for applying dynamic loading at elevated temperatures. In addition, experiments were performed under high strain rate tensile loading using tensile SHPB apparatus, and the fractured specimens were examined under scanning electron microscope (SEM) to understand the failure modes in these alloys. High-speed photography was used to capture the chronological progression of the deformation under dynamic tensile loading. The results indicated that all the three cast aluminum alloys were sensitive to strain rate and temperature. A356 exhibited the least value of flow stress under both static and dynamic loading conditions, and the highest elongation before break under dynamic tensile loading. The SEM images of the fractured specimens under dynamic tensile loading showed characteristics of transcrystalline ductile fracture in these cast aluminum alloys.
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July 2014
Technical Briefs
Determination of Johnson–Cook Parameters for Cast Aluminum Alloys
Sachin Gupta,
Sachin Gupta
1
Dynamic Photo Mechanics Laboratory,
Mechanical, Industrial & Systems Engineering,
e-mail: gupsac@my.uri.edu
Mechanical, Industrial & Systems Engineering,
University of Rhode Island
,Kingston, RI 02881
e-mail: gupsac@my.uri.edu
1Corresponding author.
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Sandeep Abotula,
Sandeep Abotula
Dynamic Photo Mechanics Laboratory,
Mechanical, Industrial & Systems Engineering,
e-mail: abotula.sandeep@gmail.com
Mechanical, Industrial & Systems Engineering,
University of Rhode Island
,Kingston, RI 02881
e-mail: abotula.sandeep@gmail.com
Search for other works by this author on:
Arun Shukla
Arun Shukla
ASME Fellow Member
Dynamic Photo Mechanics Laboratory,
Mechanical, Industrial & Systems Engineering,
e-mail: shuklaa@egr.uri.edu
Dynamic Photo Mechanics Laboratory,
Mechanical, Industrial & Systems Engineering,
University of Rhode Island
,Kingston, RI 02881
e-mail: shuklaa@egr.uri.edu
Search for other works by this author on:
Sachin Gupta
Dynamic Photo Mechanics Laboratory,
Mechanical, Industrial & Systems Engineering,
e-mail: gupsac@my.uri.edu
Mechanical, Industrial & Systems Engineering,
University of Rhode Island
,Kingston, RI 02881
e-mail: gupsac@my.uri.edu
Sandeep Abotula
Dynamic Photo Mechanics Laboratory,
Mechanical, Industrial & Systems Engineering,
e-mail: abotula.sandeep@gmail.com
Mechanical, Industrial & Systems Engineering,
University of Rhode Island
,Kingston, RI 02881
e-mail: abotula.sandeep@gmail.com
Arun Shukla
ASME Fellow Member
Dynamic Photo Mechanics Laboratory,
Mechanical, Industrial & Systems Engineering,
e-mail: shuklaa@egr.uri.edu
Dynamic Photo Mechanics Laboratory,
Mechanical, Industrial & Systems Engineering,
University of Rhode Island
,Kingston, RI 02881
e-mail: shuklaa@egr.uri.edu
1Corresponding author.
Contributed by the Materials Division of ASME for publication in the JOURNAL OF ENGINEERING MATERIALS AND TECHNOLOGY. Manuscript received December 9, 2013; final manuscript received May 27, 2014; published online June 12, 2014. Assoc. Editor: Ashraf Bastawros.
J. Eng. Mater. Technol. Jul 2014, 136(3): 034502 (4 pages)
Published Online: June 12, 2014
Article history
Received:
December 9, 2013
Revision Received:
May 27, 2014
Citation
Gupta, S., Abotula, S., and Shukla, A. (June 12, 2014). "Determination of Johnson–Cook Parameters for Cast Aluminum Alloys." ASME. J. Eng. Mater. Technol. July 2014; 136(3): 034502. https://doi.org/10.1115/1.4027793
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