Investigation of extrusion limit of incoloy028 alloy tube by combining numerical and analytical methods

C. Y. Sun, D. Liu, Mingwang Fu, J. Yang

Research output: Journal article publicationJournal articleAcademic researchpeer-review

4 Citations (Scopus)


Extrusion limit is an important evaluation criterion in extrusion process design as it determines the deformation degree in each operation. In this paper, a new method for establishment of extrusion limit diagram was proposed. To do so, the constitutive equation of Incoloy028 alloy (IN028) was established by hot compression test and the tube hot extrusion process was simulated by commercial Deform-2D software. In addition, the extrusion process is also analyzed by analytical method in which the billet heating temperature, extrusion speed and ratio were considered as influence factors. The analytical results of extrusion force and demoulding temperature were obtained. The maximum extrusion pressure of 60 MN and the eutectic melting temperature of IN028 (1, 350 °C) was selected as the limit of extrusion force and the permissible maximum temperature. The limit diagram for IN028 tube in hot extrusion process were generated using the analytical and numerical methods simultaneously and the extrusion limit diagram of IN028 at different ratios is thus provided.
Original languageEnglish
Pages (from-to)177-185
Number of pages9
JournalInternational Journal of Advanced Manufacturing Technology
Issue number1-4
Publication statusPublished - 1 Jan 2016


  • Extrusion limit
  • Hot extrusion
  • Incoloy028 alloy
  • Numerical simulation

ASJC Scopus subject areas

  • Control and Systems Engineering
  • Software
  • Mechanical Engineering
  • Computer Science Applications
  • Industrial and Manufacturing Engineering


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