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Type: Artigo de periódico
Title: Grain Size Effect on the Structural Parameters of the Stress Induced epsilon(hcp) - Martensite in Iron-Based Shape Memory Alloy
Author: Nascimento, FC
Mei, PR
Cardoso, LP
Otubo, J
Abstract: The aim of this work was to study the effect of austenitic grain size (GS) reduction on the structural parameters of the epsilon(hcp)-martensite in stainless shape memory alloy (SMA). Rietveld refinement data showed an expansion in c-axis and a reduction in a and b-axis with thermo-mechanical cycles for all samples analyzed. Samples with 75 <= GS (mu m) = 129 were analyzed. It was also observed an increase of the unit cell volume in this phase with GS reduction. The smallest grain size sample (GS = 75 mu m) presented a c/a ratio of 1.649, and approximately 90% of total shape memory recovery.
Subject: shape memory effect
stainless steel
rietveld refinement
Country: Brasil
Editor: Univ Fed Sao Carlos, Dept Engenharia Materials
Citation: Materials Research-ibero-american Journal Of Materials. Univ Fed Sao Carlos, Dept Engenharia Materials, v. 11, n. 1, n. 63, n. 67, 2008.
Rights: aberto
Identifier DOI: 10.1590/S1516-14392008000100012
Date Issue: 2008
Appears in Collections:Unicamp - Artigos e Outros Documentos

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