Review in Self Healing in Metal Matrix Composites

摘要

Self-healing inorganic materials are a relatively new field in materialsresearch. Several parts many creatures can repair minor damage to severalparts of their body, such as bone fractures and skin cuts. Integrating selfhealingfunctions into manufactured materials is of great interest to materialsscientists and engineers. Recent research has focused on polymer, ceramic,and concrete materials because it is relatively simple to incorporate selfhealinginto these materials compared to incorporating self-healing into ametal matrix.Adding self-healing capability to metal will enhance its function over alonger period and extend its fatigue life. The purpose of this review paper isto examine potential research on self-healing that has changed themicrostructure of metals to incorporate self-healing properties. In the review,no papers that focused solely on strengthening the metal to make a strongermetal to protect it from any damage and extend its lifespan were not included.We have reviewed the potential self-healing approaches, shape memory alloy(SMA) fiber reinforcement, NiTi particles incorporated into the matrix.Microcapsules filled with low melting point alloys incorporated into themetal matrix, which describes a new processing technology that combineshollow spheres and microtubes filled with healing materials into a metalmatrix and demonstrates its ability to repair cracks or holes. Thecomputational fluid dynamics CFD framework is included in this review topredict which cracks the healing fluid flowing into the cracks can repair.Finally, future research on the development of self-healing metals and metalmatrix composites is discussed, including the development of self-healingand the need to predict and measure performance after repair, as well as theneed to maintain and enhance the performance of self-healing metal matrixcomposites.