Effects of different proportion between manganese and iron （w（Mn）/w（Fe）=0

0.5

0.8

1.1 and 1.4） on the morphology of Fe phase and mechanical properties of ZL102 alloy with 1.2% Fe content were investigated. The results show that iron phase with coarse needle-like shape in the microstructure is observed

and it is converted into Chinese script with Mn addition. Furthermore

the Chinese script iron phase in the microstructure is increased and the needle-like iron phase is decreased and refined with raising Mn via Fe ratio. However

the mechanical properties of the alloy are deteriorated with the increase of Mn via Fe ratio as a result of increasing in Fe phase in the alloy. Meanwhile

both tensile strength and elongation of alloy exhibit the tendency of first rise then decrease with w（Mn）/w（Fe） ratio increasing. The optimized values of tensile strength and elongation

157.7 MPa and 1.22%

respectively

can be obtained with w（Mn）/w（Fe） of 1.1.