Study on the Microstructure and Mechanical Properties of Additively Manufactured Metal Alloys

Thesis Abstract

Abstract
The adoption of additive manufacturing (AM) techniques in the production of metal alloys has gained significant attention in recent years due to its ability to create complex geometries and customize materials for specific applications. This thesis presents a comprehensive study on the microstructure and mechanical properties of additively manufactured metal alloys, aiming to provide insights into the relationship between processing parameters, microstructural features, and mechanical performance. The research methodology involved the fabrication of metal alloy samples using selective laser melting (SLM) and electron beam melting (EBM) techniques, followed by detailed characterization using microscopy, X-ray diffraction, and mechanical testing. Chapter One provides an introduction to the research topic, highlighting the background of the study, problem statement, objectives, limitations, scope, significance, structure of the thesis, and definition of key terms. Chapter Two presents a thorough literature review covering ten major aspects related to additive manufacturing of metal alloys, including process parameters, microstructure evolution, mechanical properties, and existing challenges in the field. In Chapter Three, the research methodology is outlined, detailing the experimental setup, sample preparation, processing parameters, characterization techniques, and data analysis procedures. This chapter includes eight subsections that describe the step-by-step approach followed in conducting the study, ensuring the reliability and repeatability of the experimental results. Chapter Four comprises a comprehensive discussion of the findings obtained from the microstructural analysis and mechanical testing of the additively manufactured metal alloys. The results are interpreted in the context of the processing conditions and their impact on the material properties, providing valuable insights into the structure-property relationships in these advanced materials. The discussion also addresses any discrepancies, trends, and implications of the results in the broader context of additive manufacturing research. Finally, Chapter Five presents the conclusion and summary of the thesis, summarizing the key findings, discussing their implications, and suggesting future research directions. The conclusions drawn from this study contribute to the existing knowledge base on additively manufactured metal alloys, shedding light on the factors influencing microstructural development and mechanical behavior. Overall, this thesis provides valuable insights that can guide the optimization of AM processes for enhanced material performance and application-specific design considerations.