• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Materials Science and Engineering >Correlation of dynamic compressive properties, adiabatic shear banding, and ballistic performance of high-strength 2139 and 7056 aluminum alloys
【24h】

Correlation of dynamic compressive properties, adiabatic shear banding, and ballistic performance of high-strength 2139 and 7056 aluminum alloys

机译：高强度2139和7056铝合金的动态压缩性能，绝热剪切扎带和弹道性能的相关性

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

In this study, laboratory-scale Split Hopkinson pressure bar (SHPB) tests were conducted on commercial armor plates composed of 2139 and 7056 Al alloys to investigate their dynamic compressive properties in relation to adiabatic shear band (ASB) formation. The results were then correlated to those of the ballistic performance as measured from V_(50) ballistic impact tests. In the SHPB tests, the 2139 alloy was compressed and flattened with traces of cracking, whereas cracks initiated in a shear mode in the 7056 alloy and propagated to produce several pieces. The cracking behavior was further analyzed by interrupted SHPB tests, which confirmed that shear cracking occurred through the formation of deformed ASBs and subsequent locally transformed ASBs. These processes started much earlier in the 7056 alloy; therefore, it showed a lower critical strain for initiating the ASBs and lower resistance to ASB formation. This result corresponded well with the actual V50 ballistic impact test results, which confirmed the better ballistic performance of the 2139 alloy. The resistance to dynamic and ballistic deformation was quantitatively discussed using the susceptibility to ASB formation.
机译：在该研究中，在由2139和7056 al合金组成的商业装甲板上进行实验室级分裂霍普金森压力条（SHPB）测试，以研究其与绝热剪切带（ASB）形成的动态压缩性能。然后将结果与来自V_（50）的弹道冲击试验测量的弹道性能相关。在SHPB测试中，2139合金被压缩并用裂缝痕量扁平，而在7056合金中以剪切模式引发的裂缝并繁殖以产生几件。通过中断的SHPB试验进一步分析了裂化行为，证实通过形成变形的ASB和随后的局部转化的ASB而发生剪切裂纹。这些过程在7056合金中早期开始较早;因此，它显示出较低的临界应变，用于启动ASB和降低抗ASB形成。该结果与实际的V50弹道撞击试验结果相比，确认了2139合金的更好的弹道性能。使用对ASB形成的敏感性地讨论了对动态和弹性变形的抵抗力。

著录项

  • 来源
    《Materials Science and Engineering》 |2021年第15期|140757.1-140757.10|共10页
  • 作者

    Selim Kim; Min Cheol Jo; Tae Won Park; Jinhee Ham; Seok Su Sohn; Sunghak Lee;

  • 作者单位

    Center for Advanced Aerospace Materials Pohang University of Science and Technology Pohang 37673 South Korea;

    Center for Advanced Aerospace Materials Pohang University of Science and Technology Pohang 37673 South Korea;

    Materials Directorate Agency for Defense Development Daejeon 305-600 South Korea;

    Materials Directorate Agency for Defense Development Daejeon 305-600 South Korea;

    Department of Materials Science and Engineering Korea University Seoul 02841 South Korea;

    Center for Advanced Aerospace Materials Pohang University of Science and Technology Pohang 37673 South Korea;

  • 收录信息
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Aluminum alloy; Ballistic performance; Split hopkinson pressure bar (SHPB); Adiabatic shear band (ASB);

    机译：铝合金;弹道表现;拆分霍普金森压力条（SHPB）;绝热剪切带（ASB）;

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号