采用扫描电镜（SEM）、X射线衍射（XRD）和力学性能测试等手段研究了固溶处理对ZA27合金组织和性能的影响。在300～380℃范围,合金经不同温度固溶处理1 h,水淬后进行相同的时效（160℃×8 h）处理。分析了在不同温度固溶处理的淬火态和时效态合金的显微组织及力学性能。结果表明,在365℃固溶处理能够使溶质原子充分溶入基体,时效析出相数量多、尺寸小、分布均匀,时效强化效果最好。ZA27合金的优选固溶工艺为365℃×1 h。
Effect of solution treatment on microstructure and mechanical properties of ZA27 alloy were studied by means of scanning electron microscopy(SEM),X-ray diffraction(XRD) and mechanical property testing.After solution treatment in the temperature range of 300-380 ℃ for 1 h,the alloy samples were aged at 160 ℃ for 8 h.The results show that complete dissolution of the solute atoms in the ZA27 alloy is obtained after solution treatment at 365 ℃ and uniformly distributed fine precipitates are observed after aging treatment.The proper solution treatment parameters of the alloy are heating at 365 ℃ for 1 h.
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