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Strength 5052 aluminum surface decarburization introduction

Introduction strength 5052 aluminum on the surface decarburized layer, based on variation of the metal structure to carry out quantitative conservation, in-depth discussion of the issues and decarburized layer depth and heat-treated 5052 aluminum conducted, the use of proceeds for 5052 proposed a relationship aluminum decarburization depth non-destructive testing methods and theoretical studies and by 5052 aluminum heat treatment experiments were conducted experimental validation sample from the perspective of changes in the microstructure.

Nitrogen penetration, not only eliminates the adverse effects of decarbonization, but also improve the residual compressive stress, while the cryogenic liquid nitriding and carbonitriding temperature strength aluminum valve 5052 increased the amount of deformation at 150 degrees for 0.2%, 250 degrees of deformation of 0.56%, improved thermal stability and resistance to valve 5052 aluminum relaxation stability, but liquid nitriding and carbonitriding time should be strictly controlled, otherwise it will form a network sulfides and nitrides mesh , but will reduce its fatigue strength. To make an aluminum plate to further strengthen the intensity and stress of 5052 aluminum surface, aluminum 5052 further nitriding, carbonitriding or cryogenic liquid sulfur and nitrogen permeation treatment, and ultimately to the enhanced effect


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