Session: 03-06-01 Advances in Materials and Manufacturing Technology

Paper Number: 79192

79192 - Modeling of Thermo-Mechanical Behavior of Laser Powder Bed Fusion of Nickel-Based Super Alloy Parts Used in Oil and Gas Industry 

Nickel-based alloys are used for a broad range of applications in Oil and Gas (O&G) production and marine engineering because of their good corrosion resistance and mechanical properties. The future of laser AM in the O&G industries is highly promising due to the ability to deliver cheaper and better parts quickly. However, it is in the initial stages, rigorous research needs to be done to enhance fabrication speed and parametric optimization to improve the thermo-mechanical properties of the fabricated components by laser AM. To assess the qualification of produced parts including Metallurgical and mechanical properties, simulation method is an important way. In this research study, a three-dimensional finite element model is developed to allow for the prediction of temperature, residual stress, and distortion in Nickel-based super alloy parts fabricated by multi-layer Laser Powder-Bed Fusion process. In this way thermal distribution and residual stress were analyzed. For this purpose, a successful FEM model of LPBF was applied that includes a thermal model representing scanning laser thermal input, a material model to define the temperature-dependent material property in the cyclic heat and cooling environment, and a physics-based method to describe the layer build-up process. For validation of the results, the reported experimental results were used.

Presenting Author: r.m. Chandima Ratnayake University of Stavanger

Authors:

Zeinab Malekshahi Beiranvand Tarbiat Modares University,
r.m. Chandima Ratnayake University of Stavanger
Mehdi Rasoulinia Borujerd Azad Eslami University
Amir Moradiani Tarbiat Modares University,