High temperature mechanical behavior of functionally graded materials SS316L/IN718 fabricated by directed energy deposition

Ying LI

Doctoral thesis

Abstract:

This research investigates the high-temperature mechanical behavior of FGMs SS316L/IN718 fabricated by LDED, addressing a critical gap in understanding their post-deposition properties. The results show that process parameters, heat treatment and sample orientation significantly influence the mechanical characteristics of both individual materials and the composite FGMs. The study demonstrates that SS316L/IN718 through LDED has considerable promise for high-temperature uses, offering enhanced performance and a broader range of applications.

Abstract:

This research investigates the high-temperature mechanical behavior of FGMs SS316L/IN718 fabricated by LDED, addressing a critical gap in understanding their post-deposition properties. The results show that process parameters, heat treatment and sample orientation significantly influence the mechanical characteristics of both individual materials and the composite FGMs. The study demonstrates that SS316L/IN718 through LDED has considerable promise for high-temperature uses, offering enhanced performance and a broader range of applications.

Keywords

Directed Energy Deposition, Functionally graded materials, IN718, SS316L, Tensile properties, Anisotropy, Heat treatment, Laser power, laser beam, Creep, Microstructure

Jazyk práce: English

Datum vytvoření / odevzdání či podání práce: 29. 2. 2024

Zverejniť od: 31. 12. 2999

Obhajoba závěrečné práce

• Vedúci: Prof. Ing. Ján Džugan, Ph.D.

University of West Bohemia

Faculty of Mechanical Engineering

Doctoral programme / odbor:
Manufacturing and Materials / Manufacturing and Materials