Propiedades mecánicas y desgaste de aceros inoxidables dúplex utilizando el método de Taguchi de análisis de imagen

C.  Rajkumar; J.  Udaya Prakash; Sachin  Salunkhe; S.  Jayavelu

doi:10.3989/revmetalm.192

Authors

C. Rajkumar Department of Mechanical Engineering, Vel Tech Rangarajan Dr. Sagunthala R&D Institute of Science and Technology https://orcid.org/0000-0002-4316-2566
J. Udaya Prakash Department of Mechanical Engineering, Vel Tech Rangarajan Dr. Sagunthala R&D Institute of Science and Technology https://orcid.org/0000-0001-9229-5499
Sachin Salunkhe Department of Mechanical Engineering, Vel Tech Rangarajan Dr. Sagunthala R&D Institute of Science and Technology https://orcid.org/0000-0001-6542-2050
S. Jayavelu Department of Mechanical Engineering, Vel Tech Rangarajan Dr. Sagunthala R&D Institute of Science and Technology https://orcid.org/0000-0001-6950-1979

DOI:

https://doi.org/10.3989/revmetalm.192

Keywords:

Duplex stainless steels, Forging, Grey relational analysis, Partial vacuum, Powder Metallurgy, Wear

Abstract

Sintered components fabricated from Duplex Stainless Steels (DSS) are suitable for many applications. Duplex Stainless Steels are the combination of ferritic and austenitic stainless steels employed in different industries owing to their combined mechanical and corrosion properties. The usage of DSS is growing up year by year in automobile industries and offshore industries. In this paper, two-phase structure steels fabricated by powder metallurgy route are presented. DSS A and DSS B are the two compositions made by prealloyed powders (310L and 430L) along with ferrite and austenite stabilisers such as chromium, molybdenum, and nickel. The powders were blended in a pot mill for 12 h. Sintering of powder preforms was carried out at 1350 ºC in partial vacuum and hydrogen atmospheres, respectively. Sintered compacts were subjected to forge operation at 1150 ºC and quenched in water. XRD analysis of sintered and forged DSS confirms the absence of intermetallics. The mechanical and wear behavior of DSS were analyzed using Taguchi’s Grey Relational Analysis. DSS B in forged condition subjected to 20N loading conditions under hydrogen atmosphere exhibited COF of 0.53.

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