Heat treatment process of GH4099 alloy selective laser melting forming part

The invention provides a heat treatment process of a GH4099 alloy selective laser melting forming part, and relates to the technical field of alloy heat treatment. The heat treatment process of the GH4099 alloy selective laser melting forming part mainly comprises solution treatment and aging treatment. The defects in the prior art are overcome, by optimizing the combination of the solution treatment process and the aging treatment process, the tensile strength of 900 DEG C high-temperature stretching of the GH4099 alloy selective laser melting forming part is larger than 295 MPa, the ductility is larger than 23%, and meanwhile, and by properly prolonging the aging treatment time, the elongation rate of 900 DEG C high-temperature stretching of the GH4099 alloy selective laser melting forming part can be obviously improved. 本发明提供一种GH4099合金激光选区熔化成形零件的热处理工艺，涉及合金热处理技术领域。所述GH4099合金激光选区熔化成形零件的热处理工艺主要包括固溶处理和时效处理。本发明克服了现有技术的不足，通过优化固溶处理和时效处理工艺组合，使GH4099合金激光选区熔化成形零件900℃高温拉伸的抗拉强度﹥295MPa、延伸率﹥23％，同时通过适当延长时效处理时间，GH4099合金激光