刘明哲,乔桂英,刘猛,肖福仁

• 1:燕山大学环境与化学工程学院河北省应用化学重点实验室
• 2:燕山大学材料科学与工程学院亚稳材料科学与制备技术国家重点实验室河北省金属产品工艺与性能优化重点实验室
• 3:中航上大高温合金材料股份有限公司河北省特种合金再生工程技术研究中心

摘要(Abstract)：

为获得组织细小均匀的资源节约型GH4169合金大型锻棒,采用Gleeble-3500型热模拟试验机研究了一种资源节约型GH4169合金的热变形行为,基于应力-应变曲线和峰值应力和应变,建立了该合金的热变形本构关系以及一种描述其流变应力行为的本构方程,并基于动态材料模型绘制了该合金的热加工图。结果表明:该合金的再结晶激活能(Q)为467.91 kJ·mol~(-1),与高纯材料冶炼的合金相当,表明资源节约型高温合金具有与高纯材料冶炼合金相似的热加工性;该合金再结晶组织有较高热加工参数敏感性,随变形量的增加,热加工工艺参数窗口变窄。

关键词(KeyWords)： GH4169合金;热变形;再结晶;热加工图

Abstract:

Keywords:

基金项目(Foundation): 河北省省级科技计划项目(20311007D);; 国家工信部工业强基工程项目(2018-130000-33-03-001517);; 河北省重点项目(JMRH2020-27)

作者(Author): 刘明哲,乔桂英,刘猛,肖福仁

DOI: 10.13289/j.issn.1009-6264.2021-0225

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