Effect of prestrain on tensile property of TiNif/Mg composite

Abstract

A TiNi shape memory alloy fibre-reinforced AZ31 Mg alloy matrix composite was fabricated herein by spark plasma sintering. The microstructure of the composite and the effect of prestrain on its strength were analysed. The phase transformation of TiNi was observed in situ, and the effect of temperature was monitored. Metallurgical bonding formed at the interface between the TiNi fibre and AZ31 matrix. The prestrain strengthening effect on the yield stress of the composite at 298 K was more dramatic than at 373 K, and the effect decreased with increasing prestrain. The prestrain strengthening effect on tensile strength of the composite was effective at both 298 and 373 K. Because of the difference between recovery stress of TiNi and prestrain-induced compressive stress, higher temperature strengthened the material more significantly than did prestrain application.

Nano-Enhanced Phase Reinforced Magnesium Matrix Composites: A Review of the Matrix, Reinforcement, Interface Design, Properties and Potential Applications

“…This way, good compatibility can be achieved because of their similar crystal structure. Therefore, the high-melting-point metal Ti is considered to be a potential reinforcing material [47][48][49]. Moreover, Ni metal particles with a high melting point [50] or a Ti-Ni shape memory alloy [49] used as reinforcement have a better enhancement effect.…”

“…Therefore, the high-melting-point metal Ti is considered to be a potential reinforcing material [47][48][49]. Moreover, Ni metal particles with a high melting point [50] or a Ti-Ni shape memory alloy [49] used as reinforcement have a better enhancement effect. High-entropy alloys (HEA), as an emerging alloy, have also attracted widespread attention.…”

Viscoelastic behavior of epoxy resin reinforced with shape-memory-alloy wires

“…Various applications of SMAs have been reviewed in several studies (Alam et al, 2007; Lester et al, 2015; Michaud, 2004; Sanusi et al, 2014). The SMA wires embedded in both composites and polymers provided various interesting behaviors such as enhancing tensile strength (Jin et al, 2019) and improving buckling behavior (Choi et al, 1999; Mohaseb Karimlou and Eslsami-Farsani, 2018), inhibiting crack propagation (Saeedi and Shokrieh, 2017, 2019) and vibration control (Ghomshei et al, 2005). Moreover, the stress distribution in the interface of pre-strained SMA wire/polymer composites has been studied recently (Fathi et al, 2019, 2020).…”