In Situ High Resolution Neutron Diffraction Study of Anisotropy and Stress Effects in Transforming CuAlZnMn Shape Memory Alloys

Article type: Research Article

Authors: Luk´š, P. | Nov´k, V. | Šittner, P. | Neov, D.

Affiliations: Nuclear Physics Institute 250 68, Řež, Czech Republic | Institute of Physics, Na Slovance 2, Prague 8 182 21, Czech Republic

Note: [] Corresponding author.

Abstract: Redistribution of stresses among grains of elastically anisotropic shape memory alloy polycrystals which undergo stress induced martensitic transformation upon loading were studied experimentally by in situ high resolution neutron diffraction spectra as well as theoretically by micromechanics simulation. The results of profile shape analysis and simulated distribution of lattice spacing of 220-crystal planes evolving during the tensile test on CuAIZnMn polycrystal are compared. Microstructure information on the load partitioning mechanism deduced from this comparison is discussed.

Keywords: In situ high-resolution neutron diffraction, Profile analysis, Shape memory alloy, Microstructure

DOI: 10.1080/10238160108200128

Journal: Journal of Neutron Research, vol. 9, no. 2-4, pp. 79-86, 2001