Presentation Title

Effect of Heat Treatment on Microstructure and Mechanical Properties of 15-5 PH Stainless Steel

Faculty Mentor

Omar Es-Said

Start Date

18-11-2017 12:30 PM

End Date

18-11-2017 1:30 PM

Location

BSC-Ursa Minor 91

Session

Poster 2

Type of Presentation

Poster

Subject Area

engineering_computer_science

Abstract

The objective of this project was to evaluate the mechanical and microstructural properties of 15-5 PH stainless steel at varying heat treatments. In one batch, the effect of the heat rate on the mechanical properties was studied. In a second batch, the aging/re-aging characteristics were evaluated. The steel was provided by two different vendors as tensile bars. There were thirty eight different heat treatments conducted on these specimens. The mechanical tensile properties and the microstructure were analyzed. There was a linear correlation between hardness values and the ultimate and yield strength. The optical microscope showed a martensitic structure with very fine grains in all of the tested samples. The Scanning Electron Microscope (SEM) images showed a ductile fracture in all samples.

Key Words: 15-5 PH Stainless Steel, precipitation hardening, heat treatment, mechanical properties, microstructure.

Summary of research results to be presented

The optical microscope showed a martensitic structure with very fine grains in all of the tested samples. Optical microscopy also showed that the grains seemed to grow as tempering temperature, and time increased. The Scanning Electron Microscope (SEM) images showed a ductile fracture in all samples.

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Nov 18th, 12:30 PM Nov 18th, 1:30 PM

Effect of Heat Treatment on Microstructure and Mechanical Properties of 15-5 PH Stainless Steel

BSC-Ursa Minor 91

The objective of this project was to evaluate the mechanical and microstructural properties of 15-5 PH stainless steel at varying heat treatments. In one batch, the effect of the heat rate on the mechanical properties was studied. In a second batch, the aging/re-aging characteristics were evaluated. The steel was provided by two different vendors as tensile bars. There were thirty eight different heat treatments conducted on these specimens. The mechanical tensile properties and the microstructure were analyzed. There was a linear correlation between hardness values and the ultimate and yield strength. The optical microscope showed a martensitic structure with very fine grains in all of the tested samples. The Scanning Electron Microscope (SEM) images showed a ductile fracture in all samples.

Key Words: 15-5 PH Stainless Steel, precipitation hardening, heat treatment, mechanical properties, microstructure.