冷变形GH3625合金管材中间退火过程中的组织演变

发布时间：2018-06-07 19:34

  本文选题：GH合金 + 冷变形　； 参考：《材料热处理学报》2017年02期

【摘要】：通过室温压缩试验、数学模型拟合、金相分析以及洛氏硬度计等手段,研究了冷变形GH3625合金管材中间退火过程中的组织演变规律,并建立了中间退火过程中再结晶晶粒长大方程。研究表明:随着冷变形量的增加,合金组织均匀性逐渐变好,硬度值显著增加,特别是冷变形量0~50%的阶段更为明显;随着退火温度的升高,晶粒长大速率加快;GH3625合金管材在1120℃/15 min/AC下进行退火处理,组织为均匀细小的完全再结晶晶粒,是适宜的中间退火工艺;所建立的晶粒长大模型预测结果与实测值吻合较好。
[Abstract]:By means of room temperature compression test, mathematical model fitting, metallographic analysis and Rockwell hardness tester, the microstructure evolution during intermediate annealing of cold-deformed GH3625 alloy pipe was studied. The equation of recrystallization grain growth during intermediate annealing was established. The results show that with the increase of cold deformation amount, the microstructure homogeneity of the alloy becomes better and the hardness value increases significantly, especially at the stage of 0 ~ 50% cold deformation, and with the increase of annealing temperature, The grain growth rate is accelerated and annealed at 1120 鈩，

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