热处理对GH3625合金管材组织和性能的影响

发布时间：2019-03-15 08:08

【摘要】：采用不同温度对GH3625合金热挤压管材进行热处理,研究了热处理对GH3625合金管材组织演变和性能的影响。结果表明,热处理温度对晶粒长大影响比较明显,随热处理温度升高,晶粒长大温度为970℃到1150℃,当温度达到1180℃时,晶粒迅速长大,同时热处理温度改变雪花状Ni_2(Cr,Mo)相析出和分布。GH3625合金管材的硬度值与晶粒尺寸符合Hall-Patch关系式。随热处理温度升高,GH3625合金抗拉强度降低,断后伸长率增加。热处理前后GH3625合金的断裂均视为韧窝断裂和部分沿晶断裂的混合型。
[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，

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