Projects / Programmes
The influence of process parameters and heat treatment on the microstructure evolution and the mechanical properties of Inconel 718 made by a hybrid process with two additive manufacturing technologies.
| Code |
Science |
Field |
Subfield |
| 2.04.02 |
Engineering sciences and technologies |
Materials science and technology |
Metallic materials |
| Code |
Science |
Field |
| 2.05 |
Engineering and Technology |
Materials engineering |
Additive manufacturing, Inconel 718, Powder bed technology, Direct Laser deposition, Hybrid Technology, SLM, LENS, Process Parameters, Heat Treatment, Microstructure, Mechanical Properties
Researchers (1)
| no. |
Code |
Name and surname |
Research area |
Role |
Period |
No. of publicationsNo. of publications |
| 1. |
38186 |
PhD Simon Malej |
Materials science and technology |
Head |
2020 - 2022 |
0 |
Organisations (1)
Abstract
AM (Additive manufacturing) is especially convenient for hard to manufacture materials and for complex light-weight designs. Good example are high tech components made from titanium alloys and nickel superalloys. One of this alloys is Inconel 718. Inconel alloy 718 is commonly used for various high temperature applications. Especially in aviation and aerospace industry due to thermal and strength properties under extreme conditions. The main goal of the proposed project is a breakthrough in mechanical properties for Inconel 718 hybrid AM part by combining SLM (Selective Laser Melting) and LENS (Laser Engineered Net Shape) technology. The mechanical properties that are close to or comparable to SLM with reduced build time. Recently, the hybrid printing was evaluated in project “Assessing the Use of Advanced Manufacturing to Improve and Expand Space Hardware Capabilities” (No.4000121982/17/NL/BJ/gp) as a part of GTSP (General Technology Support Project) with European Space Agency. The research of the influence of the AM process parameters and heat treatment on the mechanical properties of hybrid parts were not the aim of the project. In the scope of the project only a basic metallography was conducted. While, the heat treatment used in the project was designed for parts made with SLM. The metallography of tensile test samples showed that porosity, defects and Laves phase influenced the yield strength, ultimate strength and elongation. Therefore, to achieve better mechanical properties of the hybrid AM Inconel 718, the printing parameters and heat treatment must be different. The research area is very new and important correlations like process parameters-grain structure of the bond-mechanical properties are not established. Such relations are important, to get a proper insight into hybrid Inconel 718 behaviour. The main objective of the proposed research is establishing the correlation between the process parameters, heat treatment parameters and mechanical properties for hybrid AM Inconel 718 with SLM and LENS technology. Metallographic characterization and mechanical test will be crucial for making such a correlations. Important part of the research will also be different approaches to obtain the best bond between the SLM and LENS part.
