Study of cyclic martensitic transformation in beta1-CuZnAl single crystals using X-ray topography method

W. Bogdanowicz

doi:10.1117/12.280744

14 July 1997 Study of cyclic martensitic transformation in beta1-CuZnAl single crystals using X-ray topography method

W. Bogdanowicz

Proceedings Volume 3178, Solid State Crystals: Growth and Characterization; (1997) https://doi.org/10.1117/12.280744
Event: XII Conference on Solid State Crystals: Materials Science and Applications, 1996, Zakopane, Poland

Abstract

In the work we present results of studies of real structure and defects changes occurring in single crystalline samples of the (beta) ₁ phase of an CuZnAl alloy during cyclic martensitic transformation induced by tensile stress. Two groups of samples were studied -- these with a chaotic distribution of subgrain boundaries and those with subgrain boundaries parallel to the direction of elongation. Analysis of the x-ray topograms as well as results of the dislocation density measurements allowed us to establish the dependence of the sum of distortion angles of neighboring subgrains ((Sigma) _(alpha )) and dislocation density ((rho) ) in both groups of samples on the number of cycles (N) of the reversible martensitic transformation. It was shown that in case of samples with the directed distribution of subgrains after some number of cycles a local correlated increase of (Sigma) _(alpha )(N) and decrease of (rho) (N) was observed. This phenomena were not observed for specimens with the chaotic distribution of subgrain boundaries.

Citation Download Citation

W. Bogdanowicz "Study of cyclic martensitic transformation in beta1-CuZnAl single crystals using X-ray topography method", Proc. SPIE 3178, Solid State Crystals: Growth and Characterization, (14 July 1997); https://doi.org/10.1117/12.280744

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