Literature vs test: Al 356 alloying

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SUMMARY

The discussion centers on the discrepancy between the expected Young's Modulus of Al 356 alloy, which is approximately 70 GPa according to literature, and the significantly lower values observed in experiments, ranging from 1.5 GPa to 5 GPa. Participants suggest that the issue likely stems from calibration problems with the MTS testing machines or flaws in the analysis approach rather than variations in the material properties due to tempering or aging. This indicates a need for proper equipment calibration and methodology verification in experimental setups.

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  • Understanding of Young's Modulus and its significance in materials science
  • Familiarity with Al 356 alloy properties and applications
  • Knowledge of MTS testing machines and their calibration processes
  • Experience in experimental design and data analysis techniques
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  • Research proper calibration techniques for MTS testing machines
  • Investigate the effects of tempering and aging on Al 356 alloy properties
  • Learn about advanced materials testing methodologies
  • Explore literature on Young's Modulus measurement standards and practices
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Materials scientists, mechanical engineers, and students conducting experiments on metal alloys, particularly those interested in the mechanical properties of Al 356 alloy.

shaneinhisroo
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Hi guys, first post here, since I can't find any literature I might as well try a forum. Literature states that Al356 alloy has a Young's Modulus of ~70GPa, of course it will change with tempering and aging differences, but it should be around there. My experiments at school are only yielding around 4-5GPa as maximum Young's Modulus, where the lower values can go as low as 1.5GPa. Does anyone know what is going on, if this is a common occurrence or maybe our MTS testing machines just aren't calibrated right?

Thanks in advance.
 
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Hi shaneinhisroo, welcome to PF. The Young's modulus isn't going to change much even with temperature and processing. Sounds like your machine (or analysis approach?) is at fault.
 

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