赵薇,董建新,张麦仓,姚志浩

• 1:北京科技大学材料科学与工程学院

摘要(Abstract)：

为了获得不同沉淀硬化相作用的高温合金在高温长期时效过程中的组织稳定性的对比规律,对3种应用最为广泛的高温合金GH4169、GH4169plus、GH4738经720℃时效后的显微组织和硬度变化进行了对比分析。结果表明,合金的组织稳定性与晶界相和弥散强化相有关,晶界碳化物较晶界δ相稳定,γ'相较γ″相有更好的稳定性,但同为γ'相,组织稳定性还与其和基体的错配度有关。对比3种合金,随时效时间的延长,GH4169plus合金的稳定性稍次于GH4738合金,但要优于GH4169合金。

关键词(KeyWords)： GH4169;GH4GH4169plus;GH4738;长期时效;组织稳定性

Abstract:

Keywords:

基金项目(Foundation): 国家高技术研究发展计划(“863”计划)(2012AA03A513)

作者(Author): 赵薇,董建新,张麦仓,姚志浩

DOI: 10.13289/j.issn.1009-6264.2015.s1.001

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