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通过金相分析和拉伸试验等试验方法,分析了分级均匀化(第一级均匀化温度325℃,第二级均匀化530℃)制度对Mg-Gd-Y-Nd-Zr合金组织和力学性能的影响。结果表明,在分级均匀化处理制度中325℃×12 h+530℃×12h,这种处理不仅保证了共晶相的完全溶解,晶粒只有少许粗化的同时,拥有比单级均匀化更高的力学性能,拉伸屈服强度达到197.3 MPa,伸长率为3.42%。
The microstructure and mechanical properties of Mg-Gd-Y-Nd-Zr alloy were analyzed by means of metallographic analysis and tensile test. The effects of grading homogenization (first stage homogenization temperature 325 ℃, second stage homogenization 530 ℃) The impact of performance. The results show that in the grading homogenization treatment system 325 ℃ × 12 h +530 ℃ × 12h, this treatment not only ensures the complete dissolution of the eutectic phase, the grain only a little roughening at the same time, with more than single-stage homogenization High mechanical properties, tensile yield strength reached 197.3 MPa, elongation of 3.42%.