锻造及热处理工艺对GH4169合金组织与性能的影响  

Influence of forging and heat treatment on structure and property of GH4169 alloy

作　　者：王春光[1] 王东哲[1] 万红[1] 葛锋[1] 刘微[2] 刘虹[1] 黄敏[1] 

机构地区：[1]重庆材料研究院有限公司国家仪表功能材料研究中心,重庆400707 [2]湖南大学材料科学与工程学院,湖南长沙410082

出　　处：《锻压技术》2014年第12期14-18,共5页Forging & Stamping Technology

基　　金：国家"863计划"科技攻关项目(2012AA091104);重庆材料研究院青年基金资助项目(13091032);重庆市自然科学基金资助项目(cstc2012jj A50027)

摘　　要：GH4169合金是一种Nb强化的沉淀硬化型镍基高温合金,介绍了GH4169合金中的δ相、γ″相和γ'的组织结构特性,锻造温度、变形量、固溶温度、固溶时间、时效处理温度和时效处理时间对GH4169合金组织的影响,以及形成的不同合金组织对其性能的影响。通过制定合理的锻造工艺可以细化晶粒及控制δ相析出;固溶处理和时效处理可以分别控制δ相、γ″相和γ'相等析出相的分布、形貌和大小。阐述了两种工艺的协调配合可以有效地提高GH4169合金的力学性能,精确控制热加工工艺对获得性能优异的GH4169合金非常重要。GH4169 alloy is a kind of nickel-based high-temperature alloy with Nb enhanced precipitation hardening type. It was introduced that the structure properties of δ-phase, γ＂-phase and γ′-phase in alloy GH4169, the influences of forging temperature, deformation, solution temperature and time, aging temperature and time on GH4169 alloy structure, and the effect of different structure on alloy performance. The grain refinement and δ-phase precipitation were determined by forging, and the distribution, pattern and size of δ- phase, γ＂-phase and γ′-phase were controlled by solution and aging heat treating. The mechanical properties of alloys were determined by coordinating these two processes. It was very important to ensure accuracy during hot process for obtaining GH4169 alloy with good properties.

关 键 词：GH4169合金 热处理 锻造 Δ相 力学性能 

分 类 号：TG316[金属学及工艺—金属压力加工]