Experimental assessment of self-healing characteristics in AA2014matrix with nitinol wire and solder alloy as healing agents. (22nd May 2019)

• Record Type: Journal Article
• Authors: Srivastava, Vaibhav; Gupta, Manish
• Is Part Of: Materials research express. Volume 6:Number 8(2019)
• Publication Date: 2019-05-22
• Subjects: self-healing -- shape memory alloy -- low melting point alloy -- compositional healing -- hybrid metal matrix composites; Materials science -- Research -- Periodicals; Materials science -- Periodicals; 620.11
• DOI: 10.1088/2053-1591/ab1ee7
• Languages: English
• ISSNs: 2053-1591

Abstract

Abstract: This work investigates the self-healing characteristics of hybrid metal matrix composites which contains Ni-Ti based Shape memory alloy wire and solder alloy as healing agents reinforced in aluminium alloy AA2014 matrix. Inspired by nature, the idea for smart material attempts to retain shape of the deformed structure through SMA wire bridging and binds the crack interface through solder alloy that are already reinforced inside the matrix. The objective of this paper is to find out the best suited healing temperature favorable to attain higher healing assessment efficiency. The completely damaged and partially damaged composite samples produced by flexural test were thermally treated at different temperatures (i.e. at 250 °C, 370 °C, 480 °C, 600 °C, 615 °C). The results shown that about 80% of recovery in deformed shape for partially damaged samples, 70% of reduction in crack width efficiency for fully damaged samples and 52% of recovery in flexural strength for partially damaged sample was achieved at 600 °C healing temperature.