Open AccessOptimising the Parameters and Increasing the Hardness of Duplex Stainless Steel by Annealing Process in Valve Manufacturing Industries
Author(s) -
T. Varun Kumar,
K. Karthick,
K. Dhanushkaran,
D. Jagadeesh
Publication year - 2020
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/954/1/012005
Subject(s) - materials science , austenite , annealing (glass) , metallurgy , duplex (building) , ferrite (magnet) , toughness , corrosion , microstructure , indentation hardness , composite material , dna , biology , genetics
Duplex stainless steels (DSS) are designed to have a phase assemblage consisting of approximately 50% austenite and 50% ferrite. Such an assemblage makes these materials very attractive by providing an excellent combination of high hardness, toughness, and corrosion resistance. This project discuss about the increasing of hardness in duplex stainless steel (DSS), by suitable annealing process. Increasing of austenite increases the hardness of the material and the increasing of ferrite increases the ductile nature of the material. It is too crucial to obtain the suitable result by suitable match of annealing process. Thus the Design of Experiments were done and heating temperature of 1240°C with a holding time of 4.5hrs and cooled to a temperature of 1043.9°C provides the maximum hardness value of 311.235 BHN.