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首页> 外文期刊>Journal of Materials Engineering and Performance >Characterization and Formability of Titanium/Aluminum Laminate Composites Fabricated by Hot Pressing
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Characterization and Formability of Titanium/Aluminum Laminate Composites Fabricated by Hot Pressing

机译：热压制造钛/铝层压材料复合材料的表征及成形性

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The Ti/Al laminate composites were prepared by hot pressing to investigate the forming performance due to the corresponding potential applications in both the aerospace and auto industry. The bonding interface morphology and element distributions were characterized by SEM and EDS. The phase constituent was detected by XRD. It was observed that these composites presented good bonding interfaces between Ti and Al layers, and no low-sized voids and intermetallic compounds formed at the interface. In addition, the formability of these laminate composites was studied by the uniaxial tension tests, the limit drawing ratio (LDR) and the forming limit curve (FLC) experiments, respectively. The results indicated that the flow stress increased along with the strain rate increment. A constitutive equation was developed for deformation behavioral description of these laminate composites. The LDR value was 1.8, and the most susceptible region to present cracks was located at the punch profile radius. The forming limit curve of the laminate composites was located between the curves of titanium and aluminum and intersected with the major strain line at approximately 0.31. The macroscopic cracks of the FLC sample demonstrated a saw-toothed crack feature.
机译：通过热压制备Ti / Al层压复合材料，以研究由于航空航天和汽车工业中的相应潜在应用，以研究成形性能。粘合界面形态和元素分布的特点是SEM和EDS。通过XRD检测相成分。观察到这些复合材料在Ti和Al层之间呈现良好的粘合界面，并且在界面中没有形成的低尺寸空隙和形成的金属间化合物。此外，通过单轴张力试验，限制拉伸比（LDR）和成形限制曲线（FLC）实验研究了这些层压复合材料的可成形性。结果表明，流量应变随着应变率增量而增加。开发了组成方程，用于使这些层压材料复合材料的变形行为描述。 LDR值为1.8，并且最易感区域呈现裂缝位于冲头轮廓半径。层压复合材料的成形极限曲线位于钛和铝的曲线之间，并与大约0.31的主要应变管线相交。 FLC样品的宏观裂缝显示出锯齿裂纹特征。

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