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Lithium aluminosilicate (LAS); SiC particulates; flow behaviour; compression.

The compressive flow behaviour of lithium aluminosilicate (LAS) glass, with and without SiC particulate reinforcements, was studied. The LAS glass crystallized to 𝛽 spodumene during high-temperature testing. The flow behaviour of LAS glass changed from Newtonian to non-Newtonian due to the presence of crystalline phase. Further, with the addition of 40 vol.% SiC additions, the strain rate sensitivity of flow stress decreased. While the activation energy for flow in LAS was 300 kJ/mole, it increased to 995 kJ/mole with the addition of 40 vol.% SiC reinforcements.

Santanu Das¹ V S R Murthy¹ G S Murty¹

1. Department of Materials and Metallurgical Engineering, Indian Institute of Technology, Kanpur 208 016, India

Published

April 2001

Manuscript received

7 September 2000

Manuscript revised

22 December 2000