Taylor Castagna
Friction and Wear of Materials – MANE 6963
HW 1_Prob 2
The wear mechanism map is ultimately divided into two main cases: mild and severe wear. Within these
cases, the wear mechanisms are delamination wear, oxidational wear, and melt wear.
Delamination wear occurs at instances of relatively slow velocity and can be described as wear which
occurs when cracks form under the surface due to hardening of the material. Further adhesion will be able
to remove the weakened material from the crack propogation and form debris. Delamination wear will
transition from mild to severe with an increase in normal pressure.
Oxidational wear occurs when small particles are removed from the surface of the material and due to
flash temperature are quickly oxidized. Further contact will cause removal of the oxidized particles that
still adhere to the surface of the material.
Taylor Castagna
Friction and Wear of Materials – MANE 6963
HW 1_Prob 2
Melt wear is a severe condition of wear in which the normal pressure and velocity are high enough to
create enough heat flux to cause the material to melt which ultimately removes material from the surface.