A study of shape memory alloy NiTi fiber/plate reinforced (SMAFR/SMAPR) Ti-Al laminated composites

作者：Wang, Enhao; Tian, Yao; Wang, Zhenqiang^*; Jiao, Feifei; Guo, Chunhuan; Jiang, Fengchun^*

来源：Journal of Alloys and Compounds, 2017, 696: 1059-1066.

DOI：10.1016/j.jallcom.2016.12.062

• Shape memory alloy
• NiTi fiber/plate-reinforcement
• Tensile property
• Compression property

In this work, shape memory alloy NiTi fiber reinforced (SMAFR) Ti-Al laminated composites containing similar to 41 vol% Ti and similar to 2.5 vol% NiTi was fabricated via vacuum hot pressing method. In order to accurately determine the reaction products of the fabrication process, a new kind of laminated composites i.e. shape memory alloy NiTi plate-reinforced (SMAPR) Ti-Al laminated composites was successfully prepared using the fabrication process that is similar to SMAFR laminated composites. Results showed that Al3Ti and Al3Ni are formed during fabrication process, and residual Al existed in the intermetallic layer. In addition, the quasi-static tensile test indicates that the tensile property of SMAFR laminated composites is superior to that of Ti/Al3Ti composites. The fracture process of SMAFR laminated composite includes three basic stages: (I) delamination of interface of Ti/Al3Ti; (II) fracture of Al3Ti (and other products) and (III) fracture of NiTi fiber. Moreover, the novel SMAPR laminated composite possessed a good combination of high strength (compressive strength: 1105.4 MPa) and high plasticity (strain to failure: 5.1%), indicating that this kind of laminated composites is a new class of structural materials.

• 出版日期2017-3-5
• 单位哈尔滨工程大学