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超聲滾壓強化對2D12鋁合金疲勞性能的影響
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1.沈陽航空航天大學 機電工程學院，遼寧 沈陽 110136;2.沈陽航空航天大學 航空制造工藝數(shù)字化國防重點學科實驗室，遼寧 沈陽 110136

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東北大學航空動力裝備振動及控制教育部重點實驗室開放基金(VCAME201908), 航空制造工藝數(shù)字化國防重點學科實驗室開放基金(SHSYS201901)


Influence of Ultrasonic Surface Rolling on Fatigue Behavior of 2D12 Aluminum Alloy
Author:
Affiliation:

1.School of Mechatronics Engineering, Shenyang Aerospace University, Shenyang 110136, China;2.Key Laboratory of Fundamental Science for National Defense of Aeronautical Digital Manufacturing Process, Shenyang Aerospace University, Shenyang 110136, China

Fund Project:

Sponsored by Key Laboratory of Vibration and Control of Aero-propulsion System, Ministry of Education, Northeastern University (VCAME201908); Sponsored by Key Laboratory of Fundamental Science for National Defence of Aeronautical Digital Manufacturing Process (SHSYS201901)

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    摘要:

    通過對比分析2D12鋁合金超聲強化試樣與拋光試樣的疲勞性能，對表面硬化、殘余應(yīng)力和疲勞壽命進行了研究。殘余壓應(yīng)力和梯度納米晶結(jié)構(gòu)對改善構(gòu)件的疲勞性能起著至關(guān)重要的作用，可以有效減少疲勞裂紋的萌生和擴展。實驗及分析預(yù)測結(jié)果表明，試樣經(jīng)超聲強化后，軸向壓應(yīng)力提高了55%，顯微硬度提高了20%。通過對表面強化規(guī)律的研究，為2D12鋁合金的強化工藝和疲勞性能的影響提供了指導。

    Abstract:

    The effects of ultrasonic rolling strengthening treatment and polishing on 2D12 aluminum alloys were investigated, and the surface hardening, residual stress, and fatigue life were studied. The residual compressive stress and gradient nano-crystalline structure can reduce the fatigue crack initiation and propagation, which play a critical role in improving fatigue performance of components. The results and analytic predictions indicate that after ultrasonic rolling strengthening treatment, the axial compressive stress and the microhardness of specimens are improved by 55% and 20%, respectively. The strengthening rule provides a guidance for strengthening process and the fatigue behavior improvement of 2D12 alloy.

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叢家慧,王磊,徐永臻,回麗.超聲滾壓強化對2D12鋁合金疲勞性能的影響[J].稀有金屬材料與工程,2022,51(1):113~118.[Cong Jiahui, Wang Lei, Xu Yongzhen, Hui Li. Influence of Ultrasonic Surface Rolling on Fatigue Behavior of 2D12 Aluminum Alloy[J]. Rare Metal Materials and Engineering,2022,51(1):113~118.]
DOI：10.12442/j. issn.1002-185X.20200922

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  • 收稿日期:2020-11-30
  • 最后修改日期:2020-12-24
  • 錄用日期:2021-01-19
  • 在線發(fā)布日期: 2022-02-04
  • 出版日期: 2022-01-28