Thermal Model for Prediction of Deposition Dimension of a Deposited Nickel Superalloy
A. Soleymani

Amir Soleymani, Department of Mechanical and Manufacturing Engineering, University Putra Malaysia, Serdang, Malaysia
Manuscript received on 15 April 2015 | Revised Manuscript received on 25 April 2015 | Manuscript Published on 30 April 2015 | PP: 191-196 | Volume-4 Issue-4, April 2015 | Retrieval Number: D3948044415/15©BEIESP
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Abstract: Reduction of the final cost of products, complexities of the geometry of the products, as well as speed of the productions are some of the reasons for using rapid prototyping methods in material fabrication processes. Rapid prototyping enables the user to make near net-shape products. Having a good understanding of the thermal history is one of the main challenges of the materials made by rapid prototyping methods. Since the final product is gradually made under a continuous process, a small area can be heated multiple times during different passes of depositions. A series of heating and cooling (with different rates) cycles can importantly affects the microstructural evolution and the chemical compositions (in the case of alloys). In this paper, a finite-element-based thermal model for the manufacturing of nickel-based superalloy on a steel substrate heated by a laser source was developed using COMSOL multiphysics software. The model was assessed based on measuring and comparing the depth and width of the molten with the reported values in the literature. The model results were in good agreement (maximum error of 16%) with the experimental results available in the literature. It was concluded that the developed thermal model can be used for the optimization of the used parameters in the manufacturing process in order to get the desired properties
Keywords: Thermal Model, Finite Elements, Rapid Prototyping, Nickel

Scope of the Article: Thermal Engineering