时效对AA 7017合金弹道性能的影响

IF 0.8 4区工程技术 Q3 MULTIDISCIPLINARY SCIENCES

Defence Science Journal Pub Date : 2023-03-09 DOI:10.14429/dsj.73.18639

Pradipta Kumar Jena, K. Suresh, K. Sivakumar, R. K. Mandal, A. K. Singh

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引用次数: 0

摘要

& # x0D;研究了时效对AA-7017铝合金组织、织构、力学性能和弹道性能的影响。AA-7017合金经历过欠时效、峰值时效和过时效三种不同的时效过程。时效后的力学性能有显著差异。合金在峰时效状态下强度和硬度最大。从织构测量中可以看出，取向分布函数的总体强度从未龄期到峰值龄期逐渐增大。采用7.62 mm钢芯弹以820±10 m/s的速度冲击AA-7017老化板，评估其弹道性能。结果表明，AA-7017合金在峰时效状态下的抗弹性体性能最好。在弹道后微观结构中发现了变形的材料流线和绝热剪切带引起的裂纹。AA-7017合金的弹道性能与组织和力学性能随时效的变化有关;

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Effect of Aging on the Ballistic Performance of AA 7017 Alloy

This study presents the effect of aging on microstructure, texture, mechanical and ballistic properties of AA-7017 aluminium alloy. AA-7017 alloy is subjected to three different aging namely under-aging, peak-aging and over-aging. Significant difference is observed in the mechanical properties after aging. The alloy exhibits maximum strength and hardness in the peak-aged condition. From texture measurements, it is noticed that the overall intensity of orientation distribution function increases from under-aged to peak-aged condition. The AA-7017 aged plates are impacted with 7.62 mm steel core projectiles at 820±10 m/s to evaluate the ballistic performance. It is noticed that AA-7017 alloy displays best ballistic resistance in peak-aged condition. Distorted material flow lines and adiabatic shear band induced cracking is detected in post ballistic microstructure. The ballistic performance of AA-7017 alloy is correlated with the variations in the microstructure and mechanical properties with aging

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来源期刊

Defence Science Journal 综合性期刊-综合性期刊

CiteScore

1.80

自引率

11.10%

发文量

审稿时长

7.5 months

期刊介绍： Defence Science Journal is a peer-reviewed, multidisciplinary research journal in the area of defence science and technology. Journal feature recent progresses made in the field of defence/military support system and new findings/breakthroughs, etc. Major subject fields covered include: aeronautics, armaments, combat vehicles and engineering, biomedical sciences, computer sciences, electronics, material sciences, missiles, naval systems, etc.