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

doi:10.12442/j.issn.1002-185X.20200922

Home > Archive>Volume 51, Issue 1, 2022 >113-118. DOI:10.12442/j.issn.1002-185X.20200922

Influence of Ultrasonic Surface Rolling on Fatigue Behavior of 2D12 Aluminum Alloy
DOI:
                        10.12442/j.issn.1002-185X.20200922
                    
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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
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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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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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[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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Received:November 30,2020
Revised:December 24,2020
Adopted:January 19,2021
Online: February 04,2022
Published: January 28,2022

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