图3.1为铸态合金的室温拉伸应力-应变曲线，相应的力学性能结果如表2所

Figure 3.1 is a cast alloy at room temperature a tensile stress - strain curve, the mechanical properties of the corresponding results shown in Table 2. As the zinc content increases, the tensile yield strength (TYS) and ultimate tensile strength (the UTS) increases, elongation decreases. 0Zn alloy having a high strength (), but relatively low strength (TYS of 237mpa, UTS of 391mpa). TYS 0.65Zn alloy improves 284mpa, UTS improved 421mpa, but the elongation declined slightly (16.8%). For 1.2Zn alloy, the tensile strength reaches a maximum value (424 MPa), to improve the ratio of non-zinc alloy 33 MPa. The results showed that, 1.2Zn alloy having good strength and ductility balance. Compared with 0Zn alloy, 1.8Zn alloy tensile yield strength increased from 237mpa to 297mpa, extending rate of 18.9% to 10.7% decrease. Further, the addition of Zn to the alloy yield point is present, particularly evident for 1.8Zn alloy (FIG. 8A).

Figure 3.1 shows the room temperature stretch stress-strain curve of the cast alloy, and the corresponding mechanical performance results are shown in Table 2. As the zinc content increases, the tensile yield strength (TYS) and the extreme tensile strength (UTS) increase and the elongation decreases. The 0Zn alloy has a high strength (but a relatively low strength) (237mpa for TYS and 391mpa for UTS). The TYS of the 0.65Zn alloy increased by 284mpa and UTS by 421mpa, but the elongation rate decreased slightly (16.8%). For 1.2Zn alloys, the tensile strength reaches a maximum (424 MPa), which is 33 MPa higher than the zinc-free alloy. The results show that 1.2Zn alloy has a good strong plastic balance. Compared to the 0Zn alloy, the tensile yield strength of the 1.8Zn alloy was increased from 237mpa to 297mpa, while the elongation decreased from 18.9% to 10.7%. In addition, for the alloy added Zn there is a yield platform, especially for 1.8 Zn alloys (Figure 8A).

Fig. 3.1 shows the tensile stress-strain curve of as cast alloy at room temperature, and the corresponding mechanical property results are shown in Table 2. With the increase of zinc content, the tensile yield strength (TYS) and ultimate tensile strength (UTS) increased, and the elongation decreased. 0zn alloy has high strength (), but relatively low strength (TYS is 237mpa, UTS is 391mpa). TYS and UTS of 0.65zn alloy increased by 284mpa and 421mpa, but the elongation decreased slightly (16.8%). For 1.2zn alloy, the tensile strength reaches the maximum value (424mpa), which is 33 MPa higher than that of zinc free alloy. The results show that 1.2zn alloy has a good strong plastic balance. Compared with 0zn alloy, the tensile yield strength of 1.8zn alloy increased from 237mpa to 297mpa, while the elongation decreased from 18.9% to 10.7%. In addition, there is a yield plateau for the alloy with Zn addition, especially for the 1.8zn alloy (Fig. 8a).<br>