Analysis of a Functionally Graded Steel

The purpose of the proposed research is to investigate the variables that contribute to the fracture toughness of an FGM consisting of layers of carbide-free bainite (CFB) and high Manganese (Mn) Twinning Induced Plasticity (TWIP) steel, with a gradient in Mn content. The objective of this project is to determine the optimal design of the FGM that results in a combination of high strength and high fracture toughness. This is to be achieved by varying the number of interfaces and the thickness of layers to analyze the material’s mechanical response. The sub-objectives of this project are to understand the fracture mechanics of the FGM during concentrated crack propagation and to quantify the strength of the interface. It is presumed that the material responds to stresses through a combination of delamination at the interface and absorption of energy through bending. This behaviour would vary based on the construction of the material and which layer the pre-notched crack is machined in. In working with Dr. Rafael Estevez the work will be focused on developing simulations of the data using finite element modeling. The combination of simulations with experimental work is intended to provide complimentary data, improving the understanding of the material.

Faculty Supervisor:

Hatem Zurob

Student:

Partner:

Université Grenoble Alpes

Discipline:

Engineering

Sector:

Education

University:

McMaster University

Program: