FEM simulation of open die forging of a plate from material NIMONIC 80A in DEFORM 3D

• Autorzy: Polakova I. , Duchek M. , Malecek L.
• Języki publikacji: EN

Abstrakty

EN

Purpose: This article presents results of a three-dimensional FEM-simulation of open die forging of a plate from material NIMONIC 80A. The FEM-simulation was carried out in DEFORM 3D Multiple Operation. Design/methodology/approach: The open die forging simulation contains many sequence operations, each single stroke and displacement of dies had to be modelled. The FEM-simulation of the open die forging process was set in accordance with real process conditions. Findings: The main effect on the crack initiation was the decrease in temperature on a edge of the plate. The real forgings show transverse cracks on the surface which starts on edges of the plate during forging. A good agreement between the simulation and experiment results was observed. Research limitations/implications: The plastic behaviour of material NIMONIC 80A was defined by means of strain hardening data which was obtained on the basis of measured data from Rastegaev compression test. The desired final thickness of the plate was reached by two procedures to study the effect of an amount of a reduction. The first procedure comprised 8 reduction passes with three reheatings, and second procedure comprised 10 reduction passes with four reheatings. The data evaluation of crack initiation in the FEM-simulation was carried out by tensile tests on the specimens. Originality/value: This article describes the FEM-simulation of open die forging process that was set in accordance with real process conditions. The aim of this simulation was to analyze the effect of an amount of a reduction on crack initiationon a real plate and to suggest the optimization of the process.

Słowa kluczowe

EN

FEM simulation; open die forging; strain hardening

PL

symulacja MES; kucie swobodne; umocnienie zgniotowe

• Wydawca: International OCSCO World Press
• Czasopismo: Archives of Materials Science and Engineering
• Rocznik: 2014
• Tom: Vol. 66, nr 1
• Strony: 31--36
• Opis fizyczny: Bibliogr. 5 poz.

Twórcy

autor

Polakova I.

• COMTES FHT a.s., Průmyslová 995, 334 41 Dobřany, Czech Republic

autor

Duchek M.

• COMTES FHT a.s., Průmyslová 995, 334 41 Dobřany, Czech Republic

autor

Malecek L.

• COMTES FHT a.s., Průmyslová 995, 334 41 Dobřany, Czech Republic

Bibliografia

• [1] I. Schindler, P. Kawulok, M. Legerski, Metalurgická tvařitelnost. Vysoká škola báňská, Technická univerzita, Ostrava, 1997.
• [2] V.K. Hašek, Státní nakladatelství technické literatury, Praha, 1965.
• [3] D. Bombac, M. Brojan, M. Tercelj, R. Turk, Response to Hot Deformation Conditions and Microstructure Development of Nimonic 80A Superalloy, Materials and Manufacturing Processing 24 (2009) 644-648.
• [4] T. Altan, S.-I. Oh, H.L. Gegel, Metal Forming: Fundamentals and applications, American Society for Metals, 1983.
• [5] DEFORM 3D, system manual 10.2, 2011.