Investigating Resulting Residual Stresses during Mechanical Forming Process

3rd International Conference on Mechanical, Manufacturing and Process Plant Engineering

机械制造;工业技术

Akinlabi, Stephen A.^1 ; Fatoba, Olawale S.^2 ; Mashinini, Peter M.^1 ; Akinlabi, Esther T.^2

Department of Mechanical and Industrial Engineering Technology, University of Johannesburg, South Africa^1

Department of Mechanical Engineering Science, University of Johannesburg, South Africa^2

关键词: Geometrical shapes;    Laser metal deposition;    Laser-forming;    Manufacturing process;    Parent materials;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/328/1/012012/pdf
DOI  :  10.1088/1757-899X/328/1/012012

学科分类：工业工程学

来源: IOP

【 摘 要 】

Most manufacturing processes such as machining, welding, heat treatment, laser forming, laser cladding and, laser metal deposition, etc. are subjected to a form of heat or energy to change the geometrical shape thus changing the inherent engineering and structural properties of the material. These changes often cause the development of locked up stresses referred to as residual stresses as a result of these activities. This study reports on the residual stresses developed due to the mechanical forming process to maintain a suitable structural integrity for the formed components. The result of the analysis through the X-ray diffraction confirmed that residual stresses were induced in the manufactured parts and further revealed that residual stresses were compressive in nature as found in the parent material but with values less than the parent material.