...
首页> 外文期刊>Journal of Materials Science >Tailoring materials properties of UFG aluminium alloys by accumulative roll bonded sandwich-like sheets
【24h】

Tailoring materials properties of UFG aluminium alloys by accumulative roll bonded sandwich-like sheets

机译:累积式辊压夹心板状板材对UFG铝合金的材料性能定制

获取原文
获取原文并翻译 | 示例

摘要

Accumulative roll bonding (ARB) as a method of severe plastic deformation is a well-established process to produce ultrafine-grained (UFG) sheet materials with extraordinary mechanical properties. In this work ARB is applied to combine different sheet materials in order to tailor the materials properties by producing sandwich-like structures. The high strength aluminium alloy AA5754, after 4 ARB cycles (N4), is used as a core material. To achieve high corrosion resistance and good visual properties, it is cladded with commercially pure aluminium AA1050A (N4) at room temperature and alternatively with AA6014 (N4) at 230 °C. All materials are UFG and satisfactory bonding between the different layers of aluminium alloys is achieved. Nanoindentation measurements reveal that there is a sharp transition in hardness at the interface. The yield and tensile strength of the core material are fully retained in the case of the AA6014/AA5754 sandwich. The strength of the AA1050A/AA5754 sandwich is slightly lower compared to the core material but still twice as high as the clad material. The serrated yielding effect which is strongly visible in tensile tests on the pure AA5754 alloy completely disappears in the sandwich sheets, which means the surface quality is strongly enhanced.
机译:累积辊压粘结(ARB)作为一种严重的塑性变形方法,是一种生产具有超凡机械性能的超细颗粒(UFG)板材的成熟方法。在这项工作中,ARB用于组合不同的板材,以便通过产生三明治状结构来调整材料的性能。经过4个ARB循环(N4)后,高强度铝合金AA5754被用作芯材。为了获得较高的耐腐蚀性和良好的视觉性能,在室温下以商业纯铝AA1050A(N4)和在230°C下以AA6014(N4)覆以铝。所有材料均为UFG,铝合金不同层之间的粘合效果令人满意。纳米压痕测量显示界面处的硬度有急剧的转变。对于AA6014 / AA5754三明治,芯材的屈服强度和拉伸强度得到了完全保留。与芯材相比,AA1050A / AA5754三明治的强度略低,但仍是包覆材料的两倍。在纯AA5754合金的拉伸试验中明显可见的锯齿状屈服效果在夹心板中完全消失,这意味着表面质量得到了大大提高。

著录项

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