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熱等靜壓處理提升激光粉末床熔融成形鉬合金的力學(xué)性能
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作者單位:

1.河南省科學(xué)院 碳基復(fù)合材料研究院，河南 鄭州 450046;2.深圳大學(xué) 增材制造研究所，廣東 深圳 518060;3.深圳大學(xué) 機(jī)電與控制工程學(xué)院，廣東 深圳 518060;4.鄭州大學(xué) 中原關(guān)鍵金屬實(shí)驗(yàn)室，河南 鄭州 450001;5.西安交通大學(xué) 金屬材料強(qiáng)度國(guó)家重點(diǎn)實(shí)驗(yàn)室，陜西 西安 710049

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基金項(xiàng)目:

the National Natural Science Foundation of China (No. 52105385, and 52274357), the Stable Support Plan Program of Shenzhen Natural Science Fund (No. 20220810132537001), Guangdong Basic and Applied Basic Research Foundation: (No. 2022A1515010781)


Hot Isostatic Pressing for Enhancing Mechanical Properties of Mo Alloys Prepared by Laser Powder Bed Fusion
Author:
Affiliation:

1.Institute of Carbon Matrix Composites, Henan Academy of Sciences, Zhengzhou 450046, China;2.Additive Manufacturing Institute, Shenzhen University, Shenzhen 518060, China;3.College of Mechatronics and Control Engineering, Shenzhen University, Shenzhen 518060, China;4.Zhongyuan Critical Metals Laboratory, Zhengzhou University, Zhengzhou 450001, China;5.State Key Laboratory for Mechanical Behavior of Materials, Xi 'an Jiaotong University, Xi'an 710049, China

Fund Project:

National Natural Science Foundation of China (52105385); Stable Support Plan Program of Shenzhen Natural Science Fund (20220810132537001); Guangdong Basic and Applied Basic Research Foundation (2022A1515010781); Joint Fund of Henan Province Science and Technology R&D Program (225200810002); Fundamental Research Funds of Henan Academy of Sciences (240621041)

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    摘要:

    為了提升激光粉末床熔融（LPBF）技術(shù)所制備的鉬（Mo）合金的力學(xué)性能，采用了熱等靜壓技術(shù)對(duì)其處理。熱等靜壓處理后，LPBF Mo合金的孔隙率從0.27%降低至0.22%，Mo和Ti元素得到充分?jǐn)U散并且分布地更加均勻，同時(shí)形成了大量低角度晶界，抗拉伸強(qiáng)度從286±32 MPa升高至598±22 MPa，伸長(zhǎng)率由0.08%±0.02%提高至0.18%±0.02%，在拉伸過(guò)程中晶粒沒(méi)有明顯變化。熱等靜壓處理消除了LPBF Mo合金的熔池邊界，而熔池邊界是LPBF Mo合金提前失效的主要原因。因此，熱等靜壓處理成為了一種有效的強(qiáng)化LPBF Mo合金力學(xué)性能的方法，為制造高性能鉬基合金提供了新思路。

    Abstract:

    To enhance the mechanical properties of Mo alloys prepared through laser powder bed fusion (LPBF), a hot isostatic pressing (HIP) treatment was used. Results show that following HIP treatment, the porosity decreases from 0.27% to 0.22%, enabling the elements Mo and Ti to diffuse fully and to distribute more uniformly, and to forming a substantial number of low-angle grain boundaries. The tensile strength soars from 286±32 MPa to 598±22 MPa, while the elongation increases from 0.08%±0.02% to 0.18%±0.02%, without notable alterations in grain morphology during the tensile deformation. HIP treatment eliminates the molten pool boundaries, which are the primary source for premature failure in LPBFed Mo alloys. Consequently, HIP treatment emerges as a novel and effective approach for strengthening the mechanical properties of LPBFed Mo alloys, offering a fresh perspective on producing high-performance Mo-based alloys.

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引用本文

梁迅文,付忠學(xué),張石明,車(chē)玉思,程鵬明,王沛.熱等靜壓處理提升激光粉末床熔融成形鉬合金的力學(xué)性能[J].稀有金屬材料與工程,2025,54(3):587~592.[Liang Xunwen, Fu Zhongxue, Zhang Shiming, Che Yusi, Cheng Pengming, Wang Pei. Hot Isostatic Pressing for Enhancing Mechanical Properties of Mo Alloys Prepared by Laser Powder Bed Fusion[J]. Rare Metal Materials and Engineering,2025,54(3):587~592.]
DOI：10.12442/j. issn.1002-185X.20240583

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  • 收稿日期:2024-09-04
  • 最后修改日期:2024-12-09
  • 錄用日期:2024-12-10
  • 在線發(fā)布日期: 2025-03-25
  • 出版日期: 2025-03-25