Fabrication of Al/Mg/Al Composites via Accumulative Roll Bonding and Their Mechanical Properties.
Fabrication of Al/Mg/Al Composites via Accumulative Roll Bonding and Their Mechanical Properties.
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Al/Mg/Al复合材料的累积辊压制备及其力学性能
DOI：
10.3390/ma9110951
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发表时间：
2016-11-23
期刊：
影响因子：
--
通讯作者：
Zhu Y
中科院分区：
文献类型：
--
作者：
Nie J;Liu M;Wang F;Zhao Y;Li Y;Cao Y;Zhu Y
采用累积滚压(ARB)工艺，在400℃的高温下，成功地制备了Al(1060)/Mg(AZ31)/Al(1060)多层复合材料。用金相显微镜、场发射扫描电子显微镜(FESEM)和透射电子显微镜(TEM)研究了复合材料的微观结构随ARB循环次数的增加而变化以及Al/Mg界面的结合特征。结果表明，Al和Mg层的晶粒明显细化，在Al/Mg界面处形成了Al3Mg2和Al12Mg17金属间化合物层。第三道次强度逐渐提高，极限拉伸强度(UTS)达到最大值，约为240 Mpa。并根据断口形貌分析了复合材料的强化机理。
Al(1060)/Mg(AZ31)/Al(1060) multilayered composite was successfully produced using an accumulative roll bonding (ARB) process for up to four cycles at an elevated temperature (400 °C). The microstructure evolution of the composites and the bonding characteristics at the interfaces between Al and Mg layers with increasing ARB cycles were characterized through optical microscopy, field emission scanning electron microscopy (FESEM) and transmission electron microscopy (TEM). It was found that the grains of Al and Mg layers were significantly refined and Al3Mg2 and Al12 Mg17 intermetallic compound layers formed at the Al/Mg bonding interfaces. The strength increased gradually and the ultimate tensile strength (UTS) reached a maximum value of about 240 MPa at the third pass. Furthermore, the strengthening mechanism of the composite was analyzed based on the fracture morphologies.