Experimental investigation on the low cycle fatigue performance and fractographic analysis of deep cryogenic treated 6063 aluminium alloy
Structures, ISSN: 2352-0124, Vol: 58, Page: 105588
2023
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New Findings from Sastra Deemed to be University Update Understanding of Structure Research (Experimental Investigation On the Low Cycle Fatigue Performance and Fractographic Analysis of Deep Cryogenic Treated 6063 Aluminium Alloy)
2024 JAN 30 (NewsRx) -- By a News Reporter-Staff News Editor at Tech Daily News -- New research on Structure Research is the subject of
Article Description
The influence of soaking time in Deep Cryogenic Treatment (DCT) on the fatigue behaviour of Al 6063 aluminium alloy was investigated. The aluminium rods were subjected to the deep cryogenic treatment for 2, 4, 6, 16, and 24 hrs. The low cycle fatigue behaviour of DCT-treated samples were analyzed using the 25 kN nano fatigue testing machine at the total strain amplitude of 0.4% and cyclic frequency of 0.3 Hz. CT 6 sample retained a higher fatigue life of 2216 cycles than CT 2, 4, 16, and 24 samples which had cycles to failure of about 1392, 1723, 1249, and 364, respectively. Cyclic stabilization was observed through the stress-strain curve, and the mean stress response of DCT samples exhibited a compressive nature during fatigue loading. The plastic strain amplitude response of the CT 6 sample showed a more stabilized response among DCT samples until crack initiation. Fractography reveals the origin and propagation of cracks along with fatigue striations and final fracture of DCT samples. The final fracture of CT 16 and CT 24 samples exhibited microvoid formation due to higher immersion time, whereas CT 2, CT 4, and CT 6 samples had a transgranular fracture. XRD analysis of DCT samples confirmed the formation of Mg2Si, which leads to improved fatigue properties and hardness in DCT samples.
Bibliographic Details
http://www.sciencedirect.com/science/article/pii/S2352012423016764; http://dx.doi.org/10.1016/j.istruc.2023.105588; http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=85178350381&origin=inward; https://linkinghub.elsevier.com/retrieve/pii/S2352012423016764; https://dx.doi.org/10.1016/j.istruc.2023.105588
Elsevier BV
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