發(fā)布時(shí)間：2019-03-15 08:08

【摘要】：采用不同溫度對(duì)GH3625合金熱擠壓管材進(jìn)行熱處理,研究了熱處理對(duì)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(duì)晶粒長(zhǎng)大影響比較明顯,隨熱處理溫度升高,晶粒長(zhǎng)大溫度為970℃到1150℃,當(dāng)溫度達(dá)到1180℃時(shí),晶粒迅速長(zhǎng)大,同時(shí)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(qiáng)度降低,斷后伸長(zhǎng)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(hào)：2440445