Material Vickers hardness determining method based on instrumented indentation of Berkovich and nominal hardness hardness

The invention discloses a material Vickers hardness determining method based on instrumented indentation of Berkovich and nominal hardness hardness. According to the method, instrumented indentation specific work and nominal hardness of a tested material are determined by a load-displacement curve obtained by instrumented indentation of a Berkovich indenter into the material, and then the Vickers hardness of the tested material is further determined by means of an established function relationship. According to the value of the method, the problem that the Berkovich indenter is widely used in conventional instrumented indentation test while the Vickers hardness of the tested material cannot be obtained is solved.