<strong>GH4099</strong>合金粉末的热等静压成形和薄壁筒体的制造

doi:10.11901/1005.3093.2023.514

材料研究学报

2024, Vol. 38

Issue (9): 669-679 DOI: 10.11901/1005.3093.2023.514

研究论文

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GH4099合金粉末的热等静压成形和薄壁筒体的制造

尹一峰¹^,², 卢正冠¹, 徐磊¹, 吴杰¹(

)

1 中国科学院金属研究所师昌绪先进材料创新中心沈阳 110016
2 中国科学技术大学材料科学与工程学院沈阳 110016

Hot Isostatic Pressing of GH4099 Alloy Powders and Preparation of Thin-walled Cylinders

YIN Yifeng¹^,², LU Zhengguan¹, XU Lei¹, WU Jie¹(

)

1 Shi -changxu Innovation Center for Advanced Materials, Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, China
2 School of Materials Science and Engineering, University of Science and Technology of China, Shenyang 110116, China

引用本文:

尹一峰, 卢正冠, 徐磊, 吴杰. GH4099合金粉末的热等静压成形和薄壁筒体的制造[J]. 材料研究学报, 2024, 38(9): 669-679.
Yifeng YIN, Zhengguan LU, Lei XU, Jie WU. Hot Isostatic Pressing of GH4099 Alloy Powders and Preparation of Thin-walled Cylinders[J]. Chinese Journal of Materials Research, 2024, 38(9): 669-679.

全文: PDF(16917 KB) HTML

摘要:

分别采用等离子旋转电极雾化法(PREP)和无坩埚感应熔炼超声气体雾化法(EIGA)制备出GH4099洁净预合金粉末，再将其热等静压(HIP)制备GH4099合金，研究了热等静压温度对其显微组织和拉伸性能的影响。采用优选的热等静压制度1230℃/150 MPa/4 h进行有限元模拟辅助包套设计，用PREP粉末制造出GH4099薄壁筒体。结果表明，与EIGA法相比，用PREP法制备的GH4099粉末球形度更好、表面氧化层更薄，更适合进行热等静压成形。在1165℃~1230℃随着热等静压温度的提高GH4099合金的孔隙和原始颗粒边界数量显著减少，使其在900℃的拉伸性能提高。用PREP粉末制造的GH4099薄壁筒体，其关键尺寸与实际薄壁筒体的相对偏差小于5%。

关键词 ：金属材料, GH4099合金, 粉末冶金, 热等静压, 近净成形

Abstract：

Two pre-powders of GH4099 alloy were prepared via techniques of plasma rotating electrode process (PREP) and electrode induction melting gas atomization (EIGA) respectively. Then, the powders were subjected to hot isostatic pressing (HIP) to prepare bulk GH4099 alloy (PM GH4099 alloy), and the effect of HIP temperature on the microstructure and tensile properties of PM GH4099 alloy was investigated. The results show that in comparison with EIGA process, the GH4099 powder prepared by PREP process has better powder sphericity with thinner surface oxide scale, which is more suitable for hot isostatic pressing preparation of workpiece of PM GH4099 alloys. With the increasing HIP temperature within the range of 1165^oC~1230^oC, the porosity and prior particle boundaries (PPBs) of the acquired PM GH4099 alloy decreases significantly, therewith, the corresponding tensile properties at 900^oC were improved. Finally, with the help of finite element modeling (FEM) to assist the envelope design and make, and finally thin-walled cylinders of PM GH4099 were successfully fabricated with the PREP powder via HIP at 1230^oC/150 MPa/4 h. The FEM predicted dimensional shrinkages are consistent with that of the actual made thin-walled cylinders of PM GH4099, and the deviation between the corresponding key dimensions is less than 5%.

Key words： metallic materials GH4099 alloy powder metallurgy hot isostatic pressing near-net shape manufacturing

收稿日期: 2023-10-19

ZTFLH:

TG132.32

基金资助:中国科学院基础研究领域青年团队计划(YSBR-025);国家科技重大专项(J2019-VⅡ-0005-0145)

通讯作者: 吴杰，副研究员，jwu10s@imr.ac.cn，研究方向为粉末高温结构材料近净成形技术

Corresponding author: WU Jie, Tel: (024)83978843, E-mail: jwu10s@imr.ac.cn

作者简介: 尹一峰，男，2000年生，博士生
卢正冠，男，1990年生，博士

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表1 GH4099预合金粉末的主要化学成分

图1 GH4099预合金粉末的形貌

图2 GH4099预合金粉末的粒度分布

图3 GH4099预合金粉末的XPS谱

图4 GH4099预合金粉末的升温DSC曲线

表2 GH4099合金粉末的热等静压制度

图5 GH4099合金的SEM照片

图6 在HIP3条件下GH4099合金中PPBS处碳化物颗粒的TEM形貌

图7 GH4099合金内部显微孔隙的大小和分布

图8 GH4099合金在不同温度下的拉伸性能

图9 不同热等静压温度下的GH4099合金900℃拉伸断口

图10 有限元模拟薄壁筒体收缩前后尺寸的对比

图11 薄壁筒体实物模型图和薄壁筒体截面模拟与实测值的相对位置关系

表3 薄壁筒体特定位置尺寸的实测值与模拟值的对比

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