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Simufact material database for Inconel 718 powder

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I have few questions about the Simufact material database for Inconel 718 powder, when looking into the flow curves all I could see is the data for the plastic region, I would like to know why the Simufact didn't consider the elastic region. Also in the mechanical properties what is the input for elastic modulus for this material because am not able to find it, did you consider infinite elastic modulus? if yes, could you please explain.
 
Kindly look in to the below plot I got from a simple compression test showing true stress and true strain for IN718 powder at 20C .
In718
Could you please explain why the Simufact database doesn't have any elastic region data.
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    Okay, thankyou. The formula you gave in the other post to maintain constant strain seems like its not working. could you please verify what should be the velocity of the hydraulic press for a sample of height 25.4mm to maintain a strain rate 0.01 through out the compression test. I tried 0.229829 but looks like its not working am not getting a uniform flow stress when looking in to the contour plots with this value. what should be the time we need to consider in this formula? velocity= initial_height*phip*exp(-phip*time) with phip being the desired strain rate.
     
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  • 0
    Okay, thankyou. The formula you gave in the other post to maintain constant strain seems like its not working. could you please verify what should be the velocity of the hydraulic press for a sample of height 25.4mm to maintain a strain rate 0.01 through out the compression test. I tried 0.229829 but looks like its not working am not getting a uniform flow stress when looking in to the contour plots with this value. what should be the time we need to consider in this formula? velocity= initial_height*phip*exp(-phip*time) with phip being the desired strain rate.
     
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