Ti-6554鈦合金的晶粒長大動力學(xué)
發(fā)布人：上海艾荔艾合金股份有限公司www.shailiai.cn
更新時間：2016-01-08
研究了Ti-6554(Ti-6Cr-5Mo-5V-4Al)合金在相變點(diǎn)以上的晶粒長大動力學(xué)。
Ti-6554鈦合金的晶粒長大動力學(xué)Grain growth dynamics of Ti-6554 titanium alloy研究了Ti-6554(Ti-6Cr-5Mo-5V-4Al)合金在相變點(diǎn)以上的晶粒長大動力學(xué)。結(jié)果表明：在800 ℃固溶處理時，隨著固溶時間的延長，晶粒的尺寸增加，固溶時間超過60 min后，晶粒長大速度加快。800 ℃時，晶粒平均直徑隨時間的長大方程為 6.16t0.5。固溶時間為30 min時，隨著固溶溫度的升高，合金的晶粒尺寸增大，920 ℃固溶處理后，晶粒明顯粗化。在本研究的溫度和時間范圍內(nèi)，固溶溫度對晶粒度的影響更為顯著。
The grain growth kinetics of Ti-6Cr-5Mo-5V-4Al alloy solution treated above β transformation temperature was studied. The result indicates that, when the alloy is solution treated at 800 ℃, grain size increases with solution time prolonging. Increasing velocity of grain size will be accelerated when solution time is more than 60 min. When the alloy is solution treated at 800 ℃, the function of average grain diameter increasing with solution time is 6.16t0.5. When the alloy is solution treated for 30 min, grain size increases with solution temperature rising, and grain coarsening is obvious at 920 ℃. For temperature and time range in this research, grain size is more sensitive to solution temperature.
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