Question About Atomic Force Microscopy (AFM) images

Hi RemnanTS,

Not in my book but I could be wrong.

Surface roughness is a result of the manufacturing process and is generally grouped by best results achievable for that particular method. Grinding is always better than milling or turning but costs more so the choice also depends on what you need the part for.

Mechanical or structural properties are inherently linked to the makeup of the material. It is directly linked to the atomic or molecular structure of the material and is only affected by changing this in the manufacturing of this material, not in the metal work it goes through afterwards.

This is not to say you cannot adversely affect mechanical properties by wrongly designing the shape of the part, as it clearly can but it means that the material specific properties cannot be changed by it.

Hope this is clear enough.

Case491

I forgot to mention that if you talk about nano size parts the story is totally different as here the surface is such a large part of the structure that it most definitely can affect the structural strength and other properties.

Just keep that in mind.

hehe i think so too. i cant find any literature regarding surface roughness relating to structural properties. anyway thanks for the info.

Yes, there is a connection, but only in highly stressed structures. Look into metal fatigue and shot peening for starter. The rest is metallurgy in all its wonderful details.