Abstract
This paper presents a comprehensive investigation into the selection principles and corrosion characteristics of materials commonly employed in aviation ammunition.To achieve a holistic understanding,a combined methodological approach is utilized to incorporate long-term tracking,systematic statistics,and rigorous testing of outdoor experimental data,while also conduct an extensive review and synthesis of the research progress documented by numerous scholars in this field.The study's core contribution lies in its detailed elucidation of the fundamental principles guiding material selection for aviation ammunition,paired with a meticulous analysis of key corrosion performance indicators.These indicators encompass specific corrosion types(such as pitting,intergranular,and stress corrosion),quantitative corrosion rates,standardized corrosion grading classifications,and the overarching metric of corrosion resistance.The findings systematically delineate the distinct corrosion behaviors exhibited by different material categories in varied service environments.For alloy structural steels,a class of materials prized for their high strength,it is found that they are susceptible to multiple forms of degradation,including oxidation,pitting,uniform corrosion,and critically,stress corrosion cracking.A pronounced and technically significant trend is identified,revealing that as the strength level of these steels increases,their general corrosion resistance typically deteriorates,while their sensitivity to stress corrosion cracking is markedly heightened.In the case of stainless steels,the primary corrosion concerns shift to localized attacks,namely pitting,intergranular corrosion,and crevice corrosion,with their occurrence and severity being intimately linked to the material's microstructure and specific service conditions.For aluminum alloys,the corrosion process often initiates at the surface as pitting,which can progressively evolve into more severe and structurally threatening forms like intergranular corrosion and stress corrosion cracking over time,thereby posing significant risks to the structural integrity of components.Magnesium alloys demonstrate particularly high susceptibility to pitting and general corrosive attack,necessitating special design considerations and protective measures in practical applications.Furthermore,the study confirms that specific elements,including phosphorus,sulfur,and chromium,exert a profound influence on the corrosion resistance of steels.Their content,distribution,and chemical state directly govern the material's ability to resist the initiation and propagation of corrosion.Regarding non-metallic materials,corrosion or degradation primarily manifests as a deterioration in performance instigated by physical factors,chemical agents,and biological factors,leading to a gradual loss of functionality that can compromise the overall performance and safety of the ammunition.Consequently,this study underscores that the design process of aviation ammunition must integrally account for material-specific corrosion characteristics.Material selection should prioritize stainless steel among metallic options when strength requirements are satisfied.For materials inherently susceptible to corrosion,the application of robust surface treatments is imperative,coupled with meticulous attention to compatibility between dissimilar materials in contact.Implementing these measures substantially improves corrosion protection,which in turn extends service life and bolsters the overall reliability and safety of the ammunition.Accordingly,this work offers valuable insights and a dependable reference for optimizing material selection and developing effective anti-corrosion strategies,ultimately contributing to the enhanced performance and sustained reliability of these critical military assets.关键词
航空弹药/腐蚀特性/材料选用原则/防腐蚀Key words
aviation ammunition/corrosion characteristics/material selection principles/anti-corrosion分类
军事科技
