Dresden 2014 – wissenschaftliches Programm
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MM: Fachverband Metall- und Materialphysik
MM 34: Poster Session
MM 34.39: Poster
Dienstag, 1. April 2014, 18:00–20:00, P4
A synchrotron analysis of deformation-induced martensitic transformation in the as-cast Cu40Co10Zr50 — •Fatemeh A. Javid1,2, Norbert Mattern1, Jozef Bednarcik3, Mohammad Siahatgar4, Mihai Stoica1, Simon Pauly1, and Jürgen Eckert1,2 — 1Leibniz Institute for Solid State and Materials Research, Dresden, Germany — 2Technische Universität, Dresden, Germany — 3DESY, Forschungsbereich FS, Hamburg, Germany — 4Max-Planck-Institut für Chemische Physik fester Stoffe, Dresden, Germany
The deformation-induced martensitic transformation in Cu40Co10Zr50 alloy under mechanical load was investigated using a synchrotron X-ray diffraction. The in-situ compression tests were performed in both track control and load control modes. The X-ray diffraction results show that the position of the diffraction peaks shifted to higher q values (reciprocal space) and peaks broaden due to increasing of strain. Considering the phase transformation fractions, the kinetics of phase transformation was studied in the longitudinal and transversal directions. In the case of track control test, the measured B2 (Cu,Co)Zr → M(Cu,Co)Zr transformation fractions indicates a 100% of martensitic transformation under compression loading and the microstructure consists of a fully martensitic (Cu,Co)Zr. Whilst upon load control test, the martensitic transformation occurred > 90%. The changes in the strain tensor and subsequently the shear components versus applied stress were studied.