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制备了 Cu13Zn, Cu13Zn0.1Zr, Cu13Zno.1Zro.1Cr 3种合金, 通过力学性能测定、金相和透射电镜观察,考察了Zr, Cr对Cul3Zn合金力学性能的影响。结果发现: Zr和Cr能够提高Cu13Zn合金再结晶温度和强度,Cul3Zno. 1Zro. 1Cr合金经 500℃, 1h退火处理后的屈服强度和抗拉强度分别为 298 MPa和 395 MPa,延伸率达到29%,满足高速大功率异步电动机转子导条材料的力学性能要求; Zr和Cr对Cu13Zn合金的强化机制主要是亚结构强化和第二相粒子强化。
Cu13Zn, Cu13Zn0.1Zr and Cu13Zno were prepared. 1Zro. 1Cr three kinds of alloys, mechanical properties were measured, metallographic and transmission electron microscopy to examine the Zr, Cr on the mechanical properties of Cul3Zn alloy. The results show that: Zr and Cr can improve the recrystallization temperature and strength of Cu13Zn alloy, Cul3Zno. 1Zro. 1Cr alloy after 500 ℃, 1h annealing treatment yield strength and tensile strength were 298 MPa and 395 MPa, elongation of 29%, to meet the mechanical properties of high speed induction motor rotor bar material requirements; Zr and Cr The strengthening mechanism of Cu13Zn alloy is mainly substructural strengthening and second phase particle strengthening.