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Quenching and material properties

Question asked by Alessandro Tornincasa on Apr 2, 2013
Latest reply on Apr 2, 2013 by Per Engberg


I'm doing some penetration tests on a part by using a vise to compress it. This is the vise:


Notice the small rectangular protrusions on this part that are meant to locally push the material and penetrate it.


This is the part to be penetrated:;


I've modeled some split lines and applied a total 3000 N force.


When I'm assigning to this plate a steel material that didn't undergo any heat treatment the results correlate with the practical test (1.6 mm penetration).

I'm performing linear static analysis.


When I'm assigning to this plate a steel that had a quenching treatment (resulting in 50-54 HRC Rockwell hardness), results of the pratical test are much different (0,02 mm).

Now my question is: what properties of the material change after quenching ?


I made some research in metallurgy forums and it looks like quenching doesn't affect elasticity modulus but only tensile and ultimate strength.


How can I reflect the "improved" material properties of the material with FEA and get close to my practical test ?