With different forces/depth of nanoindentation, hardness and modulus of elasticity decreases. The question is that how we can be sure that which values of hardness or elasticity of modulus are correct?
Hi Abdullah,
In general, the higher the depth of the burrow, the higher the amount of material, and this affects the measurement results. Therefore, follow the instructions of the device. In general, you can get information:
https://www.astm.org/COMMIT/images/C28Presentation_13.pdf
https://www.sciencedirect.com/science/article/pii/S0254058414005975
I suggest using the simple method. To perform comparative tests, it is sufficient to write down the dependence between the time of indenting and imprint of parameters.
Best regards,
Gedvidas
There are several factors that can cause large differences in general the hardness is more susceptible to indentation size effect.
What you should keep in mind is for example is tip shape you need to calibrate it from time to time because tip becomes blunt after some time and tip area function changes.
Keep in mind that the surface of metal may be very smooth but after preparation the surface layer may be deformed and the hardness is decreasing with the indentation depth.
With plastic materials (but not only) pile up and sink in phenomena occur.
Hi!
The modulus of elasticity depends little on the scale, and the hardness is strong.
Best regards
- Badges
- Science topic
- Similar topics
- Correction