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通过场发射扫描电镜、拉伸试验机,研究了均匀化热处理工艺对ZW61-x Al Ti C合金的显微组织、力学性能和断口形貌的影响。结果表明,铸态ZW61-x Al Ti C合金经均匀化热处理后,第二相的数量较铸态有明显增加。当Al Ti C中间合金含量为0.15%时,第二相的尺寸较小且分布均匀,具有最高的抗拉强度201.1 MPa和伸长率14.6%,比均匀化处理后ZW61合金的抗拉强度180.6 MPa和伸长率12.3%,分别提高了11.4%和18.7%。ZW61-x Al Ti C合金的断裂机理为准解理断裂。
The effects of homogenization heat treatment on the microstructure, mechanical properties and fracture morphology of ZW61-x Al Ti C alloy were investigated by field emission scanning electron microscopy and tensile testing machine. The results show that after the as-cast ZW61-x Al Ti C alloy is homogenized, the amount of the second phase is significantly increased compared with the as-cast state. When the content of Al Ti C master alloy is 0.15%, the size and distribution of the second phase is small and uniform, with the highest tensile strength of 201.1 MPa and elongation of 14.6%, the tensile strength of the ZW61 alloy after homogenization 180.6 MPa And elongation of 12.3%, increased by 11.4% and 18.7% respectively. The fracture mechanism of ZW61-x Al Ti C alloy is quasi-cleavage.