Neutron diffraction monitoring of as-cast MgZnY 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 MgZnY alloy consisting of phase (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 Mg grains was observed larger in the compressive deformation than in the tensile deformation, that might be due to the large load sharing of Mg grains as a result of the yielding of LPSO grains during compressive deformation.