【摘要】：采用不同溫度對GH3625合金熱擠壓管材進行熱處理,研究了熱處理對GH3625合金管材組織演變和性能的影響。結(jié)果表明,熱處理溫度對晶粒長大影響比較明顯,隨熱處理溫度升高,晶粒長大溫度為970℃到1150℃,當溫度達到1180℃時,晶粒迅速長大,同時熱處理溫度改變雪花狀Ni_2(Cr,Mo)相析出和分布。GH3625合金管材的硬度值與晶粒尺寸符合Hall-Patch關(guān)系式。隨熱處理溫度升高,GH3625合金抗拉強度降低,斷后伸長率增加。熱處理前后GH3625合金的斷裂均視為韌窩斷裂和部分沿晶斷裂的混合型。
[Abstract]:The effect of heat treatment on microstructure evolution and properties of GH3625 alloy pipes was studied by heat treatment of GH3625 alloy pipes at different temperatures. The results show that the effect of heat treatment temperature on grain growth is obvious. With the increase of heat treatment temperature, the grain growth temperature ranges from 970 鈩，

本文編號：2440445