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Effect of cold-working on corrosion induced damage in lug joints

Defence Technology（防务技术） 2024年第6期36卷 175-182页

作者： Ramanath M.N Chikmath L. Murthy H. Department of Aerospace Engineering Indian Institute of Technology-MadrasChennai 600036India Department of Aeronautical Engineering KLS Gogte Institute of TechnologyBelagavi 590008India

Lug joints are preferred joineries for transferring heavy loads to parent components in aerospace *** experience corrosion due to environmental conditions,improper surface finishes and rubbing displacement between the pin and *** causes damage of different sizes and shapes near the *** degradation due to corrosion-induced damage is modelled as a through-pit at one of the identified critical locations through stress *** effect of this pit on fatigue crack initiation life is ***-hole is pre-stressed by cold-working and the benefits of inducing plastic wake on the intended performance of the lug joint during the damages due to corrosion are brought out and compared with non-cold-worked *** analysis is performed on this lug joint with *** results obtained highlight the benefits of cold-working and the methodology can be extended to damage growth and analyse the effect of surface treatments for better structural integrity of components of aerospace vehicles.

关键词： Lug joint Corrosion Crack initiation cold-working Structural integrity

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INFLUENCE OF cold-working AND HEAT TREATING ON ELASTIC PROPERTIES OF Nb AND Nb-BASE ALLOYS

引用

Acta Metallurgica Sinica(English Letters) 1992年第4期5卷 236-239页

作者： HUANG Tewei Central Iron and Steel Research Institute,Ministry of Metallurgical Industry,Beijing,China

The elastic limit of single-phase alloy Nb-2Mo-2Zr-1Ti is higher as recovered state in comparison with as cold-rolled or recrystallized *** Nb-40Ti-5.5AI alloy of age-hardening type,the elastic limit is lower as cold-rolled state,but increases considerably after proper ***,its elastic modulus changes no more,so the stored-energy (σ_e^2/E)may raise *** temperature dependence on elastic modulus for pure Nb as intensely cold-worked or recrystallized state is *** anomaly may disap- pear after recovered treatment of intensely cold-worked state at 600℃ for 4 *** may change no more after that of recrystallized *** anomalous behaviour of elasticity was also discussed on the non-magnetic Nb.

关键词： Nb-base alloy elastic property cold-working heat treatment

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