...
首页> 外文期刊>Journal of Materials Research >Microstructure evolution of accumulative roll bonding processed pure aluminum during cryorolling
【24h】

Microstructure evolution of accumulative roll bonding processed pure aluminum during cryorolling

机译:低温轧制过程中累积轧制结合纯铝的组织演变

获取原文
获取原文并翻译 | 示例
           

摘要

The microstructure evolution and mechanical properties of ultrafine-grained (UFG) Al sheets subjected to accumulative roll bonding (ARB) and subsequent cryorolling was studied. Cryorolling can suppress the dynamic softening of UFG Al sheets subjected to ARB at room temperature. After the third ARB pass, the grains are slightly refined as the number of ARB passes increases. However, the grains are significantly refined further during cryorolling. The grain size of 460 nm achieved after the third ARB pass is reduced to 290 nm after two cryorolling passes with total reduction ratio 80%. Sheets subjected to ARB + cryorolling show improved mechanical properties compared to only ARB-processed sheets due to a change in the fraction of high-angle boundaries and elongated grains. The deformation mechanism for ultrafine grains at room temperature is determined by grain boundary sliding or dislocation-based recovery, while it is governed by dislocation glide at cryogenic temperature.
机译:研究了超细晶粒(UFG)铝板经过累积辊压结合(ARB)和随后的冷轧后的组织演变和力学性能。低温轧制可以抑制室温下经过ARB的UFG Al板的动态软化。在第三次ARB通过之后,随着ARB通过次数的增加,晶粒会稍微细化。但是,在冷轧过程中,晶粒被进一步细化。在两次冷轧通过之后,第三次ARB通过之后获得的460 nm的晶粒尺寸减小到290 nm,总减小率为80%。与仅经过ARB处理的板材相比,经过ARB +低温轧制的板材表现出改善的机械性能,这是由于高角度边界和细长晶粒比例的变化所致。室温下超细晶粒的变形机制取决于晶界滑动或基于位错的恢复,而其变形机理则取决于低温下的位错滑移。

著录项

  • 来源
    《Journal of Materials Research》 |2016年第6期|797-805|共9页
  • 作者单位

    School of Mechanical, Materials & Mechatronics Engineering, University of Wollongong, New South Wales 2500, Australia;

    School of Mechanical, Materials & Mechatronics Engineering, University of Wollongong, New South Wales 2500, Australia;

    School of Mechanical, Materials & Mechatronics Engineering, University of Wollongong, New South Wales 2500, Australia;

    School of Mechanical, Materials & Mechatronics Engineering, University of Wollongong, New South Wales 2500, Australia;

    School of Mechanical, Materials & Mechatronics Engineering, University of Wollongong, New South Wales 2500, Australia;

    School of Mechanical, Materials & Mechatronics Engineering, University of Wollongong, New South Wales 2500, Australia;

    School of Mechanical, Materials & Mechatronics Engineering, University of Wollongong, New South Wales 2500, Australia;

    Electron Microscope Unit, University of New South Wales, Sydney, New South Wales 2052, Australia;

    Key Laboratory of High Performance Complex Manufacturing, Central South University, Changsha 410083, Hunan, China and School of Mechanical, Materials & Mechatronics Engineering, University of Wollongong, New South Wales 2500, Australia;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

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