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Neutron diffraction monitoring of as-cast Mg$$_{97}$$Zn$$_{1}$$Y$$_{2}$$ during compression and tension

Harjo, S.; Aizawa, Kazuya; Gong, W.*; Kawasaki, Takuro

In situ neutron diffraction measurements during compressive and tensile tests of an as-cast Mg$$_{97}$$Zn$$_{1}$$Y$$_{2}$$ alloy consisting of $$alpha$$ phase ($$alpha$$Mg) as the matrix and a long period stacking ordered phase (LPSO) of 25 vol%, were performed to understand deformation behavior of each phase and to monitor the occurrence of kinking during deformation. The LPSO grains yielded possibly via kinking during compressive deformation above the applied true stress of about 137 MPa. The stress partitioning among $$alpha$$Mg grains was observed larger in the compressive deformation than in the tensile deformation, that might be due to the large load sharing of $$alpha$$Mg grains as a result of the yielding of LPSO grains during compressive deformation.

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Category:Materials Science, Multidisciplinary

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