Surface quality assessment following high performance cutting of AZ91HP magnesium alloy

Abstract

The article presents test results of surface roughness after AZ91HP magnesium alloy machining with variable technological parameters (vc, fz, αp) as well as tool geometry (γ = 5° and γ = 30°). Two carbide end mills were applied during the tests. Roughness analysis was conveyed at the end face (Ra, Rq, RzDIN, Rt, Ry, RSm) and lateral face (Ra, Rz, RSm) of the tested sample. A decrease of roughness parameters (for increasing vc) as well as an increase (with growing fz) was observed in the lateral face tests. Similar interrelations were noticed for end face of the sample. Lower roughness parameters values were recorded for tool rake angle equal to γ = 5°.