Mechanical and Thermal Properties of Individual Phases Formed in Sintered Tungsten-Steel Composites

• Authors: J. Matějíček , B. Nevrlá , J. Čech , M. Vilémová , V. Klevarová , P. Haušild
• Languages of publication: EN

Abstracts

EN

Tungsten is a prime candidate material for plasma facing components in fusion devices, thanks to its advantageous properties with respect to interaction with hot plasma. For its bonding to the supporting structure, composites and graded layers can be used for the reduction of stress concentration at the interface. When tungsten and steel are processed at elevated temperatures, e.g. hot pressing or spark plasma sintering, intermetallic phases may form and their presence and properties will affect the properties of the composite. In this work, mechanical and thermal properties of the individual phases, i.e. steel, tungsten and Fe-W intermetallics are investigated. Mechanical properties were determined by instrumented indentation. Thermal conductivity was determined by the xenon flash method on a range of samples with varying composition, from which the conductivities of each constituent were estimated. The results can be used for the optimization of compositional profiles and processing conditions for manufacturing of plasma facing components.

Keywords

EN

62.20.-x; 65.40.-b

Discipline

• 65.40.-b: Thermal properties of crystalline solids
• 62.20.-x: Mechanical properties of solids

• Journal: Acta Physica Polonica A
• Year: 2015
• Volume: 128
• Issue: 4
• Pages: 718-721

Dates

published

2015-10

Contributors

author

J. Matějíček

• Institute of Plasma Physics, Za Slovankou 3, 18200 Praha, Czech Republic

author

B. Nevrlá

• Institute of Plasma Physics, Za Slovankou 3, 18200 Praha, Czech Republic

author

J. Čech

• Czech Technical University in Prague, Faculty of Nuclear Sciences and Physical Engineering,, Trojanova 13, 12000 Praha, Czech Republic

author

M. Vilémová

• Institute of Plasma Physics, Za Slovankou 3, 18200 Praha, Czech Republic

author

V. Klevarová

• Charles University, Faculty of Mathematics and Physics, Ke Karlovu 3, 12116 Praha, Czech Republic

author

P. Haušild

• Czech Technical University in Prague, Faculty of Nuclear Sciences and Physical Engineering,, Trojanova 13, 12000 Praha, Czech Republic

References

• [1] J. Matějíček, Acta Polytechn. 53, 197 (2013)
• [2] T. Weber, J. Aktaa, Fusion Eng. Des. 86, 220 (2011), doi: 10.1016/j.fusengdes.2010.12.084
• [3] J. Matějíček, B. Nevrlá, M. Vilémová, H. Boldyryeva, Nukleonika 60, 267, 2015, doi: 10.1515/nuka-2015-0049
• [4] W.C. Oliver, G.M. Pharr, J. Mater. Res. 19, 3 (2004), doi: 10.1557/jmr.2004.19.1.3
• [5] P. Haušild, A. Materna, J. Nohava, Mater. Des. 37, 373 (2012), doi: 10.1016/j.matdes.2012.01.025
• [6] J. Čech, P. Haušild, J. Nohava, J. Matějíček, in: Proc. JuveMatter 2014, Nečtiny, Ed.: J. Kunz, České vysoké učení technické v Praze, Praha 2014, p. 76
• [7] L. Gong, Y. Wang, X. Cheng, R. Zhang, H. Zhang, Int. J. Heat Mass Transf. 68, 295 (2014), doi: 10.1016/j.ijheatmasstransfer.2013.09.043
• [8] R.C. Progelhof, J.L. Throne, R.R. Ruetsch, Polym. Eng. Sci. 16, 615 (1976)
• [9] W. Pabst, E. Gregorová, J. Phys. Conf. Series 395, 012021 (2012), doi: 10.1088/1742-6596/395/1/012021
• [10] Y. Terada, K. Ohkubo, T. Mohri, T. Suzuki, Mater. Trans. 43, 3167 (2002)
• [11] H. Okamoto, Desk Handbook: Phase Diagrams for Binary Alloys, ASM International, Materials Park 2000
• [12] MatWeb: Online Materials Information Resource http://matweb.com
• [13] P91-T91 Material Data Sheet, Thyssen-Krupp 2011

Identifiers

DOI

10.12693/APhysPolA.128.718