Investigation of the high temperature plasticity of materials by indentation measurements

N. Q. Chinh, P. Tasnadi, A. Juhasz, P. Szommer, E. Szep-Kiss, I. Kovacs

Research output: Contribution to journalConference article

8 Citations (Scopus)

Abstract

High temperature mechanical properties of metallic and non-metallic materials were investigated by impression creep test. The stress exponent and activation energies obtained are presented. In the case of the Al-3%Mg solid solution alloy it was shown that the stress exponent and the activation energy depends on the applied stress. They were found to be 3 and 148 kJ/mol in the lower stress regions and 4.6 and 129 kJ/mol in the higher stress regions, respectively. For non-metallic materials the indentation measurements resulted in for the case of a silica glass of about 1 for the value of n while for a ceramic-glass material n≈1.5 was obtained. In this latter case the activation energy was also very high (approx. 1000 kJ/mol).

Original languageEnglish
Pages (from-to)159-168
Number of pages10
JournalMechanical and corrosion properties. Series A, Key engineering materials
Volume97-98
Publication statusPublished - Dec 1 1994
EventProceedings of the 6th International Symposium on Plasticity of Metals and Alloys, ISPMA 6. - Prague, Czech Repub
Duration: Sep 5 1994Sep 9 1994

ASJC Scopus subject areas

  • Engineering(all)

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