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HomeMaterials Science ForumMaterials Science Forum Vol. 870Work Softening and Low Cycle Fatigue of Molybdenum...

Work Softening and Low Cycle Fatigue of Molybdenum Alloy under Force-Controlled Loading and Elevated Temperatures

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Abstract:

Low cycle fatigue (LCF) of a molybdenum alloy was investigated under force-controlled cyclic tension with a zero minimum stress within the 850 – 1300 °C temperature range using Gleeble-3800 physical simulator. Also, the work softening (hardening) behavior was examined through a monotonic tension up to fracture after the force-controlled cyclic deformation. The investigated material under a force-controlled cyclic loading tends to work softening and its tensile strength decreases until the applied stress. The LCF fracture in such conditions occurs through the unrestricted plastic (creep) strain accumulation and exhaustion of the plasticity. The Morrow-type fatigue curves were obtained from the tests. The results of work softening tests were also used to predict the fatigue life.

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Periodical:

Materials Science Forum (Volume 870)

Pages:

219-225

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.870.219

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Online since:

September 2016

Authors:

S.P. Samoilov*, A.O. Cherniavsky

Keywords:

Creep, Elevated Temperatures, Force-Controlled Cyclic Tests, Low Cycle Fatigue (LCF), Molybdenum Alloy, Work Softening

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© 2016 Trans Tech Publications Ltd. All Rights Reserved

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[1] S.P. Samoilov, A.O. Cherniavsky, Creep and long-term strength of molybdenum alloy, Materials Science Forum. 843 (2016) 28-33.

DOI: 10.4028/www.scientific.net/msf.843.28

[2] S.P. Samoilov, A.O. Cherniavsky, Molybdenum alloy long-term strength assessment, in: Proceeding of the International Conference on Industrial Engineering, Chelyabinsk. (2015) 105-109.

[3] A.N. Zelikman, Molybdenum, Metallurgizdat, Moscow, (1970).

[4] M. Xiao, F. Li, H. Xie, Y. Wang, Characterization of strengthening mechanism and hot deformation behavior of powder metallurgy molybdenum, Materials & Design. 34 (2012) 112-119.

DOI: 10.1016/j.matdes.2011.07.065

[5] B. Meng, M. Wan, X. Wu, Y. Zhou, Ch. Chang, Constitutive modeling for high-temperature tensile deformation behavior of pure molybdenum considering strain effects, Int. J. of Refractory Metals and Hard Materials. 45 (2014) 41-47.

DOI: 10.1016/j.ijrmhm.2014.03.005

[6] J.R. Ciulik, Creep and Dynamic Abnormal Grain Growth of Commercial-Purity Molybdenum: Ph.D. Diss., The University of Texas at Austin, (2005).

[7] J.B. Conway, P.N. Flagella, Creep-Rupture Data for the Refractory Metals to High Temperatures, Gordon and Breach Science Publishers, (1971).

[8] W.V. Green, M.C. Smith, D.M. Olson, Short-Time Creep-Rupture Behavior of Molybdenum at High Temperatures, Trans. AIME. 2215 (1959) 1061-1066.

[9] W.D. Klopp, W.R. Witzke, Mechanical Properties of Electron-Beam-Melted Molybdenum and Dilute Mo-Re Alloys, Met. Trans. 4 (1973) 2006-(2008).

DOI: 10.1007/bf02665440

[10] X.J. Yu, K.S. Kumar, Uniaxial, load-controlled cyclic deformation of recrystallized molybdenum sheet, Mat. Sc. and Engineering: A. 540 (2012) 187-197.

DOI: 10.1016/j.msea.2012.01.124

[11] D.G. Karpachev, E.D. Doronkin, S.A. Tsukerman, M.B. Taubkin, A.I. Knyazeva, L.I. Klestova, Refractory and rare metals and alloys: reference book, Metallurgiya, Moscow, (1977).

[12] T. Mrotzek, A. Hoffmann, U. Martin, Hardening mechanisms and recrystallization behavior of several molybdenum alloys, Int. J. of Refractory Metals and Hard Materials. 24 (2006) 298-305.

DOI: 10.1016/j.ijrmhm.2005.10.003

[13] D.A. Gokhfeld, L.B. Getsov, K.M. Kononov, E.T. Kulchikhin, Yu.N. Rebyakov, O.S. Sadakov, S.A. Timashev, V.N. Chepurskiy, Mechanical behavior of steels and alloys under unsteady loading: reference book, UrO RAN, Ekaterinburg, (1996).

[14] D.A. Gokhfeld, O.S. Sadakov, Plasticity and creep of structures under repeating loads, Mashinostroenie, Moscow, (1984).

[15] Z. Mróz, D. Weichert, S. Dorosz, Inelastic Behavior of Structures under Variable Loads, Kluwer Academic Publishers, Dordrecht-Boston-London, (1995).

DOI: 10.1007/978-94-011-0271-1

[16] N.A. Makhutov, K.V. Frolov, M.M. Gadenin, Scientific foundation of low-cycle strength enhancement, Nauka, Moscow, (2003).

[17] R. Kiran, K. Khandelwal, A micromechanical cyclic void growth model for ultra-low cycle fatigue, Int. J. of Fatigue. 70 (2015) 24-37.

DOI: 10.1016/j.ijfatigue.2014.08.010

[18] X. Martinez, S. Oller, L.G. Barbu, A.H. Barbat, A.M.P. de Jesus, Analysis of Ultra Low Cycle Fatigue problems with the Barcelona plastic damage model and a new isotropic hardening law, Int. J. of Fatigue. 73 (2015) 132-142.

DOI: 10.1016/j.ijfatigue.2014.11.013