热等静压对激光粉末床熔融增材制造GH3536合金组织与缺陷演变的影响

doi:10.3901/JME.260560

机械工程学报 ›› 2026, Vol. 62 ›› Issue (12): 151-162.doi: 10.3901/JME.260560

• 材料科学与工程 • 上一篇

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热等静压对激光粉末床熔融增材制造GH3536合金组织与缺陷演变的影响

刘怡^1,2,3,4, 黄科⁴, 陈青^1,2,3, 段绪星^1,2,3, 方学伟⁴, 张宏凯⁴, 裴泽宇^1,2,3

1. 中国核动力研究设计院核反应堆技术全国重点实验室成都 610213;
2. 中国核动力研究设计院先进核能技术全国重点实验室成都 610213;
3. 中国核动力研究设计院核能增材制造实验室成都 610213;
4. 西安交通大学精密维纳制造技术全国重点实验室西安 710049

收稿日期:2025-07-10 修回日期:2025-12-30 发布日期:2026-08-03
作者简介:刘怡，女，1999年出生。主要研究方向为金属增材制造。E-mail:984790087@qq.com
黄科(通信作者)，男，1983年出生，博士，教授，博士研究生导师。主要研究方向为金属增材制造、热成形。E-mail:ke.huang@xjtu.edu.cn
基金资助:
国家自然科学基金(52275374)和中核集团基础研究资助项目。

Effect of Hot Isostatic Pressing on the Microstructure and Defect Evolution of GH3536 Fabricated by Laser Powder Bed Fusion

LIU Yi^1,2,3,4, HUANG Ke⁴, CHEN Qing^1,2,3, DUAN Xuxing^1,2,3, FANG Xuewei⁴, ZHANG Hongkai⁴, PEI Zeyu^1,2,3

1. National Key Laboratory of Nuclear Reactor Technology, Nuclear Power Institute of China, Chengdu 610213;
2. State key Laboratory of Advanced Nuclear Energy Technology, Nuclear Power Institute of China, Chengdu 610213;
3. Nuclear Power Additive Manufacturing Laboratory, Nuclear Power Institute of China, Chengdu 610213;
4. State Key Laboratory for Manufacturing Systems Engineering, Xi'an Jiaotong University, Xi'an 710049

Received:2025-07-10 Revised:2025-12-30 Published:2026-08-03

摘要/Abstract

摘要： 热处理对激光粉末床熔融制造的GH3536服役构件是必要的，然而热处理对增材制造中产生缺陷的调控能力有限，限制材料疲劳寿命，因此有必要开展后处理研究以协同调控构件的缺陷、组织与性能。采用μ-CT原位表征了沉积态、热处理态和热等静压态构件的缺陷，并对各状态下构件的组织、拉伸及疲劳性能进行了表征测试。结果显示，热处理后孔隙率从沉积态的0.08%增大至0.12%，热等静压后孔隙率降至 0.03%。同时，疲劳裂纹扩展速率减缓，材料韧性因晶界协调变形能力增强而提高，室温以及高温下的力学性能均满足航空热端构件服役要求。此外，后处理有效细化了晶粒，沉积态及热等静压态的平均晶粒尺寸分别为35.9 μm和24.3 μm。本研究提出的完整增材制造及后处理工艺为 GH3536 构件的工程应用提供了指导。

关键词: 激光粉末床熔融, GH3536, 热处理, 热等静压, 显微组织, 力学性能

Abstract: Heat treatment is necessary for GH3536 components fabricated by laser powder bed fusion. However, its ability to regulate defects generated in additive manufacturing is limited, which restricts the fatigue life of the material. Therefore, it is essential to conduct post-processing research to synergistically control the defects, microstructure and properties. μ-CT was used to characterize the defects in the as-deposited, heat-treated, and hot isostatically pressed(HIP) states of the components in situ. The microstructure, tensile properties, and fatigue performance of the components in each state were also characterized. The results revealed that the porosity increased from 0.08% in the as-deposited state to 0.12% after heat treatment, while it decreased to 0.03% after HIP. Additionally, the fatigue crack growth rate was reduced, and the toughness improved due to enhanced grain boundary coordination and deformation capability. The mechanical properties at both room temperature and high temperature met the service requirements for aerospace hot-end components. Furthermore, post-processing effectively refined the grain size, with the average grain sizes of the as-deposited and HIP states being 35.9 μm and 24.3 μm, respectively. The complete additive manufacturing and post-processing process proposed in this study provides valuable guidance for the engineering application of GH3536 components.

Key words: laser powder bed fusion, GH3536, heat treatment, hot isostatic pressing, microstructures, mechanical properties

中图分类号:

TG156
TG132

刘怡, 黄科, 陈青, 段绪星, 方学伟, 张宏凯, 裴泽宇. 热等静压对激光粉末床熔融增材制造GH3536合金组织与缺陷演变的影响[J]. 机械工程学报, 2026, 62(12): 151-162.

LIU Yi, HUANG Ke, CHEN Qing, DUAN Xuxing, FANG Xuewei, ZHANG Hongkai, PEI Zeyu. Effect of Hot Isostatic Pressing on the Microstructure and Defect Evolution of GH3536 Fabricated by Laser Powder Bed Fusion[J]. Journal of Mechanical Engineering, 2026, 62(12): 151-162.

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http://www.cjmenet.com.cn/CN/Y2026/V62/I12/151

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热等静压对激光粉末床熔融增材制造GH3536合金组织与缺陷演变的影响

Effect of Hot Isostatic Pressing on the Microstructure and Defect Evolution of GH3536 Fabricated by Laser Powder Bed Fusion

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