Review paper on optimization of process parameters in turning Custom 465® precipitation hardened stainless steel

According to metallurgy, a stainless steel material can be characterized by the presence of a minimum of 10.5% alloying element in the form of Chromium, thereby providing excellent resistance to the adverse and corrosive environments. Stainless steels are divided into five families amongst which the Precipitation hardening alloys are characterized based on the heat treatment method deployed. Precipitation hardening, also referred to as age hardening is one of the heat treatment methods used to enhance the strength levels for most of the malleable materials including stainless steels. Custom 465® stainless is a martensitic precipitation hardenable alloy. This alloy can attain an ultimate tensile strength over 1724 MPa and has been a relatively newer addition to the category of Stainless steel under the precipitation hardenable family. This material finds potential interest with the structural members in aerospace, automotive, medical applications. The high strength characteristic and the composition of this alloy translate directly to machining challenges. This review paper summarizes a literature survey on the effect of various alloying elements present in this alloy, development of process parameters for the conventional turning operation on custom 465® alloy and their optimization by the implementation of Design of Experiments through the finite element analysis.