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Deformation behaviour of ZC63 magnesium matrix composite

Trojanová Z., Lukáč P.

Archives of Materials Science and Engineering

2007

Vol. 28, nr 6

361-364

Purpose: of this paper is to give information on the deformation behaviour of ZC63 magnesium alloys reinforced with 10 vol. % of SiC particles. Design/methodology/approach: The deformation behaviour of the ZC63/10SiCp composite was investigated in tensile tests over the temperature range from 23 to 200 °C at an initial strain rate of 8.3 x 10 -3 s -1. Findings: The flow stress decreases with increasing temperature. Both the yield stress and the maximum stress decrease with increasing temperature for temperatures higher than 100 °C. Research limitations/implications: The paper indicates significant softening mechanisms that take place at high temperature deformation. Practical implications: The ZC63/10SiCp composite may be used for applications at temperatures above 100 C. Originality/value: New results on the temperature dependence of the yield stress and maximum stress were obtained.

Plasticity of quasicrystalline alloys and their crystalline intermetallic approximants.

Urban K., Feuerbacher M., Klein H.

Inżynieria Materiałowa

2001

R. XXII, nr 5

931-934

An overview is given on the microscopic and macroscopic aspects of the plasticity of quasicrystals and their normalcrystalline approximants. Particular emphasis is laid on icosahedral Al-Pd-Mn and xi' Al-Pd-Mn serving as reference materials. Both materials deform involving dislocation mechanisms. However, in the case of xi' Al-Pd-Mn a combination of partial dislocations and shear-fault lines produces a novel type of defect termed metadislocation.