Study of technological factors' effects on deforming of thin-wall tubes deformation forces in short-term creep mode

International Scientific and Practical Conference on Innovations in Engineering and Technology

工业技术;自然科学

Pasynkov, A.A.^1 ; Larin, S.N.^1

Tula State University, Lenina ave. 92, Tula

300012, Russia^1

关键词: Distribution process;    Experimental research;    Isothermal conditions;    Isothermal deformation;    Operational forces;    Stress strain state;    Technological factors;    Workpiece materials;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/441/1/012034/pdf
DOI  :  10.1088/1757-899X/441/1/012034

来源: IOP

【 摘 要 】

In the modern world, slow isothermal deformation, which leads to a significant increase of the deformed metal's plasticity, have become more widely used in the manufacturing of ax-isymmetric products made of hard-to-deform light alloys. Despite a large number of works devoted to theoretical and experimental research of distribution processes, the problems of the forming theory have not been fully discussed at the present time. This paper presents the results of studies of the pipe workpiece expansion under isothermal conditions, performed in the QFORM 3D software. The workpiece was made of high-strength alloys AMg6 and BT6. It was assumed that the behavior of the workpiece material during deformation corresponds to the following equation, which characterizes the transition of the workpiece material from viscous to viscoplastic state. The study reveals the influence of a wide range of technological factors on the stress-strain state and operational force parameters. The results can be used to create scientifically based methodologies for the design of high technology processes for manufacturing of axisymmetric geometrically-complex parts using isothermal deformation methods.