Investigation on Mechanism of Microstructure Evolution during Multi-Process Hot Forming of GH4169 Superalloy Forging.

Additionally, the change in the average grain size shows a decreasing trend when the holding time is extended (as shown in Figure 6 a,d,g).

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As shown in Figure 11 , with the rise in final strain, the frequency of LAGBs shows a decreasing trend, while the frequency of HAGBs shows an increasing trend.

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