Faculty Sponsor
Dr. Jutima Simsiriwong
Faculty Sponsor College
College of Computing, Engineering & Construction
Faculty Sponsor Department
Engineering
Location
SOARS Virtual Conference
Presentation Website
https://unfsoars.domains.unf.edu/2021/posters/effects-on-fatigue-of-applying-titanium-nitride-coating-to-17-4-ph-stainless-steel/
Keywords
SOARS (Conference) (2021 : University of North Florida) – Archives; SOARS (Conference) (2021 : University of North Florida) – Posters; University of North Florida -- Students -- Research – Posters; University of North Florida. Office of Undergraduate Research; University of North Florida. Graduate School; College students – Research -- Florida – Jacksonville – Posters; University of North Florida – Undergraduates -- Research – Posters; University of North Florida. School of Engineering -- Research – Posters; Mechanical Engineering -- Research – Posters; Honorable Mention Award Winner
Abstract
Honorable Mention Winner
Surface coatings when applied to metals have many useful applications such as improving the biocompatibility and resistance to corrosion and wear. In this study, the effect of thickness of titanium nitride (TiN) on 17-4 precipitation hardened (PH) stainless steel under cyclic (i.e. fatigue) loading is investigated. TiN are applied to wrought 17-4 PH stainless steel using physical vapor deposition (PVD) technique in a low-pressure vacuum chamber filled with a mixture of inert argon and nitrogen gases with a ratio of 10:1. In addition, these specimens are subjected to two different vapor durations, but a constant voltage and pressure, to obtain different coating thicknesses. The fatigue resistance of 17-4 PH stainless steel specimens with TiN layer is obtained from rotating bending fatigue tests with constant stress levels which correlated to 75%, 50%, and 25% of the ultimate tensile strength. Failure analysis of the specimens were conducted using a scanning electron microscope (SEM) and an optical microscope to view the topography of the fracture surface and the thickness of the deposited TiN layer. The study expects that an increase in fatigue life of the specimens will result from increasing the thickness of the TiN layer due to an improvement in the hardness of the surface.
Rights Statement
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Included in
Effects on Fatigue of Applying Titanium Nitride Coating to 17-4 PH Stainless Steel
SOARS Virtual Conference
Honorable Mention Winner
Surface coatings when applied to metals have many useful applications such as improving the biocompatibility and resistance to corrosion and wear. In this study, the effect of thickness of titanium nitride (TiN) on 17-4 precipitation hardened (PH) stainless steel under cyclic (i.e. fatigue) loading is investigated. TiN are applied to wrought 17-4 PH stainless steel using physical vapor deposition (PVD) technique in a low-pressure vacuum chamber filled with a mixture of inert argon and nitrogen gases with a ratio of 10:1. In addition, these specimens are subjected to two different vapor durations, but a constant voltage and pressure, to obtain different coating thicknesses. The fatigue resistance of 17-4 PH stainless steel specimens with TiN layer is obtained from rotating bending fatigue tests with constant stress levels which correlated to 75%, 50%, and 25% of the ultimate tensile strength. Failure analysis of the specimens were conducted using a scanning electron microscope (SEM) and an optical microscope to view the topography of the fracture surface and the thickness of the deposited TiN layer. The study expects that an increase in fatigue life of the specimens will result from increasing the thickness of the TiN layer due to an improvement in the hardness of the surface.
https://digitalcommons.unf.edu/soars/2021/spring_2021/84