本文選題：GH合金 + 熱模擬壓縮�。� 參考：《中國有色金屬學(xué)報》2017年08期

【摘要】：采用熱模擬壓縮試驗研究GH696合金在變形溫度為880~1020℃、應(yīng)變速率為0.01~10.0 s~(-1)、變形程度為30%~60%條件下的高溫變形行為。采用金相顯微鏡對GH696合金高溫壓縮變形后的顯微組織進行觀察。結(jié)果表明:較高的變形溫度和較低的應(yīng)變速率有利于GH696合金的動態(tài)再結(jié)晶。采用加工硬化率-流動應(yīng)力曲線確定GH696合金的動態(tài)再結(jié)晶臨界應(yīng)變,應(yīng)用Avrami方程建立GH696合金的動態(tài)再結(jié)晶體積分數(shù)模型,并根據(jù)合金的金相定量試驗結(jié)果建立GH696合金的動態(tài)再結(jié)晶晶粒尺寸模型。
[Abstract]:The thermal deformation test was used to study the deformation behavior of GH696 alloy at a deformation temperature of 880~1020 C, the strain rate of 0.01~10.0 s~ (-1) and the deformation degree of 30%~60%. The microstructure of the GH696 alloy after high temperature compression was observed by metallographic microscope. The results showed that the higher deformation temperature and lower strain speed were observed. The dynamic recrystallization of GH696 alloy is beneficial to the dynamic recrystallization. The dynamic recrystallization critical strain of GH696 alloy is determined by the working hardening rate - flow stress curve. The dynamic recrystallization volume fraction model of GH696 alloy is established by Avrami equation. The dynamic recrystallization grain size model of GH696 alloy is established according to the results of the metallographic quantitative test of the alloy.
【作者單位】： 西北工業(yè)大學(xué)材料學(xué)院;
【分類號】：TG132.3

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