| 热处理对3D打印制备GH4169合金组织与性能的影响 |
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| 引用本文： | 孙兵兵,姜涛,雷杨,陈冰清,曾天翼,王威.热处理对3D打印制备GH4169合金组织与性能的影响[J].金属热处理,2022,47(10):10-14. |
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| 作者姓名： | 孙兵兵 姜涛 雷杨 陈冰清 曾天翼 王威 |
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| 作者单位： | 1.中国航发北京航空材料研究院, 北京 100095;2.中国科学院 金属研究所 师昌绪先进材料创新中心, 辽宁 沈阳 110016;3.中国科学技术大学 材料科学与工程学院, 辽宁 沈阳 110016;4.中国科学院 核用材料与安全评价重点实验室, 辽宁 沈阳 110016 |
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| 基金项目： | 国家重点研发计划(2016YFB1100704) |
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| 摘 要： | 通过选区激光熔化(SLM)技术三维打印(3D priting)制备了GH4169合金板状试样,并对其进行了热处理。采用三维原子探针技术(3DAP)以及附带原位拉伸功能的扫描电镜(SEM)对热处理前后试样的显微组织及力学性能进行了检测。结果表明,打印态GH4169合金中熔池和晶粒内部均为凝固枝晶组织,合金元素分布均匀。经过热处理后,基体中形成了大量细小γ″相和γ′相;拉伸试验结果显示,3D打印GH4169合金热处理后具有更优的力学性能,这归因于枝晶组织的消失、有害δ相的减少以及大量纳米级γ″相和γ′相在基体中的析出。
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| 关 键 词： | GH4169合金 3D打印 热处理 力学性能 显微组织 |
| 收稿时间： | 2022-05-13 |
Effect of heat treatment on microstructure and mechanical properties of GH4169 alloy prepared by 3D printing |
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| Sun Bingbing,Jiang Tao,Lei Yang,Chen Bingqing,Zeng Tianyi,Wang Wei.Effect of heat treatment on microstructure and mechanical properties of GH4169 alloy prepared by 3D printing[J].Heat Treatment of Metals,2022,47(10):10-14. |
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| Authors: | Sun Bingbing Jiang Tao Lei Yang Chen Bingqing Zeng Tianyi Wang Wei |
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| Affiliation: | 1. AECC Beijing Institute of Aeronautical Materials, Beijing 100095, China;2. Shi-changxu Innovation Center for Advanced Materials, Institute of Metal Research, Chinese Academy of Sciences, Shenyang Liaoning 110016, China;3. School of Materials Science and Engineering, University of Science and Technology of China, Shenyang Liaoning 110016, China;4. CAS Key Laboratory of Nuclear Materials and Safety Assessment, Chinese Academy of Sciences, Shenyang Liaoning 110016, China |
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| Abstract: | The plate-like GH4169 alloy was prepared by 3D printing using selective laser melting (SLM), and was heat treated. The microstructure and mechanical properties of the alloy before and after heat treatment were studied by three-dimensional atom probe (3DAP) and scanning electron microscopy (SEM) with in-situ tensile techniques. The results show that both the molten pool and the grain inside of the as-printed GH4169 alloy are solidification dendrites, with a homogeneous distribution of alloying elements.After heat treatment,there are a large number of fine γ″ and γ′ precipitates formed in the matrix. The tensile test results show that after heat treatment, the 3D printed GH4169 alloy has better mechanical properties, which is attributed to the disappearance of dendrite structure and harmful δ phase reduction and a large number of nanosized γ″ and γ′ precipitates in matrix. |
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| Keywords: | GH4169 alloy 3D printing heat treatment mechanical properties microstructure |
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