Modelling of peak temperature during friction stir processing of magnesium alloy AZ91

International Conference on Advances in Materials and Manufacturing Applications 2017

Vaira Vignesh, R.^1 ; Padmanaban, R.^1

Department of Mechanical Engineering, Amrita School of Engineering, Amrita Vishwa Vidyapeetham, Amrita University, Coimbatore, India^1

关键词: Finite element modelling;    Friction stir processing;    Magnesium alloy AZ91;    Microstructural modification;    Process parameters;    Solid-state processing;    Statistical modeling;    Transient temperature distributions;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/310/1/012019/pdf
DOI  :  10.1088/1757-899X/310/1/012019

来源: IOP

【 摘 要 】

Friction stir processing (FSP) is a solid state processing technique with potential to modify the properties of the material through microstructural modification. The study of heat transfer in FSP aids in the identification of defects like flash, inadequate heat input, poor material flow and mixing etc. In this paper, transient temperature distribution during FSP of magnesium alloy AZ91 was simulated using finite element modelling. The numerical model results were validated using the experimental results from the published literature. The model was used to predict the peak temperature obtained during FSP for various process parameter combinations. The simulated peak temperature results were used to develop a statistical model. The effect of process parameters namely tool rotation speed, tool traverse speed and shoulder diameter of the tool on the peak temperature was investigated using the developed statistical model. It was found that peak temperature was directly proportional to tool rotation speed and shoulder diameter and inversely proportional to tool traverse speed.