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后處理工藝對一種激光增材制造鎳基高溫合金組織與性能的影響
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作者單位:

1.沈陽工業(yè)大學 材料科學與工程學院，遼寧 沈陽 110870;2.中國科學院 金屬研究所，遼寧 沈陽 110016

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基金項目:

國防基礎(chǔ)科研計（JCKY2020130C024）、國家科技重大專項（Y2019-VII-0011-0151)、Science Center for Gas Turbine Project（HT-P2022-C-Ⅳ-002-001）


Influence of Post-Treatment Process on Microstructure and Properties of Laser Additively Manufactured Nickel-Based Superalloy
Author:
Affiliation:

1.School of Materials Science and Engineering, Shenyang University of Technology, Shenyang 110870, China;2.Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, China

Fund Project:

National Key R&D Program of China (2021YFB3700401); National Science and Technology Major Project (Y2019-VII-0011-0151); Science Center for Gas Turbine Project (HT-P2022-C-Ⅳ-002-001)

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    摘要:

    在激光增材制造過程中，鎳基高溫合金存在裂紋和微孔等缺陷，阻礙其在各領(lǐng)域應(yīng)用。將熱等靜壓（HIP）與傳統(tǒng)熱處理（HT）相結(jié)合，以獲得缺陷少且性能理想的激光粉末床熔融（LPBF）鎳基高溫合金零件。結(jié)果表明，HIP工藝提高致密度，傳統(tǒng)HT改善顯微缺陷并提高力學性能。經(jīng)HIP處理后，LPBF試樣缺陷體積分數(shù)下降，經(jīng)HT處理后，HIP+HT缺陷含量略有上升。經(jīng)后處理后，硬度呈下降趨勢，室溫下，HIP+HT試樣的抗拉伸強度和斷后伸長率分別提高到1326 MPa和21.3%。

    Abstract:

    Defects such as cracks and micropores exist in nickel-based superalloy during laser powder bed fusion (LPBF), hindering their application in various fields. Hot isostatic pressing (HIP) was combined with conventional heat treatment (HT) to obtain LPBF nickel-based superalloy parts with ideal properties and fewer defects. The results show that HIP process can improve the densification, while the conventional HT can eliminate the micro-defects to improve the mechanical properties. After HIP treatment, the defect volume fraction of LPBF specimens decreases. After HT, the defect content of HIP+HT specimens increases slightly. After post-treatment, the hardness shows a decreasing trend, and the tensile strength and post-break elongation of HIP+HT specimens increase to 1326 MPa and 21.3%, respectively, at room temperature.

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陳爽,楊彥紅,郭志強,梁靜靜,李金國,周亦胄.后處理工藝對一種激光增材制造鎳基高溫合金組織與性能的影響[J].稀有金屬材料與工程,2024,53(9):2478~2484.[Chen Shuang, Yang Yanhong, Guo Zhiqiang, Liang Jingjing, Li Jinguo, Zhou Yizhou. Influence of Post-Treatment Process on Microstructure and Properties of Laser Additively Manufactured Nickel-Based Superalloy[J]. Rare Metal Materials and Engineering,2024,53(9):2478~2484.]
DOI：10.12442/j. issn.1002-185X.20230813

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歷史
  • 收稿日期:2023-12-15
  • 最后修改日期:2024-07-30
  • 錄用日期:2024-02-01
  • 在線發(fā)布日期: 2024-09-12
  • 出版日期: 2024-09-04