研究了核电工程用GH4169丝材的冷拉变形量、固溶温度及时效热处理制度对GH4169合金冷拉丝材的晶粒度和力学性能的影响.研究结果表明,随着固溶温度的提高,合金晶粒会长大,同时合金硬度呈现降低趋势;由于加工硬化效应的影响,随着冷拉变形度的增加,合金强度随之提高,且冷拉变形度大于25%时,加工硬化对抗拉强度的贡献有明显增加的趋势.
Effect of cold-drawing deformation, solution treatment and ageing treatment on the grain size and mechanical properties of GH4169 wire for nuclear power engineering was studied.It was shown that with a rise in solution treatment temperature, the alloy grain size increased but its hardness decreased.Due to the effect of strain hardening, higher amount of cold deformation resulted in superior room temperature strength, and when the cold drawing deformation is greater than 25%, the contribution of work hardening on tensile strength significantly increased.
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