Effects of Zn and Sn on Properties of Vacuum Casting Tin Bronze
The effects of Zn, Sn on properties and microstructure of vacuum casting tin bronze were studied. The experimental results show that the replacement of partial Sn by the same mass Zn can improve mechanical property of the alloy. Zn may totally dissolve in the matrix, but the gas pores appear easily in the alloy with high content Zn. Parts of Sn dissolve in the matrix of the alloy, the others precipitate along grain boundary, which results in the decrease of strengthening effect of Sn.