The effects of DC magnetic field treatment of 1.4T

1% Zr and compound treatment of DC magnetic field and Zr on solidified structure and mechanical properties of Mg97Y2Cu1 alloy reinforced by long period ordered structure were investigated comparatively.The results show that CuZr2 phase can be observed in the alloy

and solidification structure in the alloy can be refined markedly with Zr addition.Whether or not with Zr addition

the influence of DC magnetic field on solidification structure of the alloy can be neglected.Many new diffraction peaks appear in the alloy after adding Zr

while the diffraction peak intensity of crystal plane（100）of the alloy is the much higher than that of other planes under DC magnetic field treatment.Under the combined action of magnetic field and Zr

the diffraction peak of the alloy is changed between single magnetic treatment or Zr treatment.DC magnetic field or Zr can improve effectively mechanical properties of the alloy

and the combined effect of DC magnetic field and Zr exhibits desirable.Tensile strength and elongation of the alloy reach 194.5MPa and 6.01%

which are increased by up to 63.45% and 11.30%

respectively

compared with those of the alloy without treatment.