The need of a strong improvement of productivity and reliability led the adoption of advanced modeling techniques in the design of steelmaking plants components. In this work a procedure based on a finite element simulation is proposed in order to perform a durability analysis of an anode for electric arc furnace. This component undergoes cyclic thermal loads, which also produce a partial melting of one part, meanwhile the other is maintained at almost constant temperature by a cooling system. A simplified, but effective, procedure is developed to take into account steel melting during the heating phase. Considering the cyclic loading conditions, several material cyclic plasticity models, and their effect on the thermal fatigue behavior, are also systematically investigated. The proposed approach permits the component fatigue life to be assessed by a simple and fast uncoupled thermo-mechanical simulation in steady-state conditions.
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References
1.
TurkdoganET.Fundamentals of steelmaking. Leeds: Maney Materials Science; 2010.
2.
MansonSSHalfordGR.Fatigue and durability of metals at high temperatures. Materials Park: ASM International; 2009.
3.
HurdDKollarJ.Direct current electric arc furnaces. Pittsburgh: EPRI Centre for Material Production; 1991.
4.
JonesJ.Understanding electric arc furnaces operations. Pittsburgh: EPRI Centre for Material Production; 1997.
5.
KaplunMY.Bottom electrodes of DC electric arc furnaces. Russian Metall. 2009;7:618–621. doi: 10.1134/S0036029509070155
6.
AISE Steel Foundation. The making, shaping and treating of steel, 11th edition steelmaking and refining volume, 1998.
7.
KazakOSemkoO.Modelling of electrovortex and heat flows in dc arc furnaces with bottom electrode. Ironmak Steelmak. 2013;40(8):619–624. doi: 10.1179/1743281212Y.0000000081
8.
WangFJinZZhuZ.Numerical study of dc arc plasma and molten bath in dc electric arc furnace. Ironmak Steelmak. 2006;33(1):39–44. doi: 10.1179/174328105X71326
9.
BenasciuttiDDe BonaFMoroLet al.Analisi termomeccanica di un elettrodo per forno ad arco elettrico. Proceedings of the 40th AIAS Conference, Palermo (ITA), 2011 Sep.
10.
AnsoldiMBenasciuttiDDe BonaFet al.Thermo-mechanical analysis of an electrode for direct current arc furnace. Proceedings of 9th AMST Conference, Mali Losinj (CRO), 2011 Jun.
MillsKC.Recommended values of thermophysical properties for selected commercial alloys. Cambridge: ASM International; 2002.
13.
KoricSThomasBG.Thermo-mechanical models of steel solidification based on two elastic visco-plastic constitutive laws. J Mater Process Technol. 2008;197:408–418. doi: 10.1016/j.jmatprotec.2007.06.060
14.
YouJHMiskiewiczM.Material parameters of copper and CuCrZr alloy for cyclic plasticity at elevated temperatures. J Nucl Mater. 2008;373:269–274. doi: 10.1016/j.jnucmat.2007.06.005
15.
WangYC.Steel and composite structures: behaviour and design for fire safety. London: Spoon Press; 2002.
16.
HatanakaKYamadaT.Low cycle fatigue strength of copper and α-brass cold-worked. Bull JSME. 1981;24:613–620. doi: 10.1299/jsme1958.24.613
17.
AgostinettiPDalla PalmaMDal BelloSet al.Investigation of the thermomechanical properties of electro-deposited copper for ITER. J Nucl Mater. 2011;417:924–927. doi: 10.1016/j.jnucmat.2011.01.084
18.
ChabocheJLCailletaudG.On the calculation of structures in cyclic plasticity or viscoplasticity. Comp Struct. 1986;23(1):23–31. doi: 10.1016/0045-7949(86)90103-3
19.
CollinJ-MParenteauTMauvoisinGet al.Material parameters identification using experimental continuous spherical indentation for cyclic hardening. Comp Mater Sci. 2009;46:333–338. doi: 10.1016/j.commatsci.2009.03.016
20.
LiGThomasBGStubbinsJF.Modeling creep and fatigue of copper alloys. Metall Mater Trans A. 2000;31A(10):2491–2502. doi: 10.1007/s11661-000-0194-z
21.
ChenWFHanDJ.Plasticity for structural engineers. New York (NY): Springer-Verlag; 1988.
22.
ParkJKThomasBGSamarasekeraIVet al.Thermal and mechanical behavior of copper molds during thin-slab casting (II): mold crack formation. Metall Mater Trans. 2002;33(B):437–449. doi: 10.1007/s11663-002-0055-9
23.
ThomasBGLiGMoitraAet al.Analysis of thermal and mechanical behavior of copper molds during continuous casting of steel slabs. Proceedings of 80th Steelmaking Conference, Chicago (IL), 1997 Apr.
24.
HorskyJRaudenskyMLuksT.Thermal load and fatigue of rolls in hot rolling. In: AISTech 2012 Iron and Steel Technology Conference and Exposition, Atlanta, GA, 2012 May.
25.
BenasciuttiDDe BonaFMunteanuMG.A harmonic one-dimensional element for non-linear thermo-mechanical analysis of axisymmetric structures under asymmetric loads: the case of hot strip rolling. J Strain Anal. 2016;51(7):518–531. doi: 10.1177/0309324716658415
26.
YoshidaFUrabeM.Computer-aided process design for the tension levelling of metallic strips. J Mater Process Technol. 1999;89–90:218–223. doi: 10.1016/S0924-0136(99)00034-5
27.
WangZ.Low-cycle-fatigue behavior of copper materials and their use in synchrotron beamline components. Nucl Instrum Meth Phys Res. 1994;347(1–3):651–656. doi: 10.1016/0168-9002(94)91965-8
28.
FreudenbergerJKlaußH-JHeinzeKet al.Fatigue of highly strengthened Cu–Ag alloys. Int J Fatigue. 2008;30:437–443. doi: 10.1016/j.ijfatigue.2007.04.009
29.
MansonSS.Thermal stress and low-cycle fatigue. New York: McGraw-Hill; 1966.
30.
LiuKCLoringCM.Low cycle fatigue behaviour of oxygen-free high conductivity copper at 300°C in high vacuum. J. Nucl. Mater. 1984;122–123:783–788. doi: 10.1016/0022-3115(84)90699-8
31.
O’ConnorTGDantzigJA.Modeling the thin-slab continuous-casting mold. Metall Mater Trans B. 1994;25B:443–457. doi: 10.1007/BF02663395
32.
MansonSSHalfordGR.Fatigue and durability of structural materials. Materials Park: ASM International; 2006.
