Int J Performability Eng ›› 2021, Vol. 17 ›› Issue (11): 966-972.

### Optimization and Prediction of Mechanical Behavior of Nitinol-based Composites

Sambasivarao Kalepu* and Ramanaiah Nallu

1. Department of Mechanical Engineering, Andhra University, 530003, Visakhapatnam, India
• Submitted on  ;  Revised on  ; Accepted on

Abstract: The present scenario has seen a sharp increase in the use of composites in the field of manufacturing due to their esteemed strength. In this paper, research has been done on Al Metal Matrix Composite. Aluminium alloy of Al 2024 has been chosen as the matrix and Ni-Ti powder is used as the reinforcement. The stir casting process has been adopted for the preparation of the metal matrix composite, where the reinforcement is mixed in definite proportions of 2%, 4%, 6% and 8% with the matrix. Different tests have been conducted to study the mechanical and tribological properties of the composite. The flexural stress of ASTM standard E 290-14 is at 0% and 6% inclusion of Ni-Ti Powder in Al 2024 while the specimen with 2%, 4% and 8% inclusion of Ni-Ti Powder in Al 2024 exhibited Lower Flexure Modulus. The Vickers hardness test of ASTM E384-17 standard revealed that with an increase in the weight percentage of the reinforcement, there has been an increase in the hardness of the composite. Topography test images indicated that the sum of peak values obtained determines the crystallinity of the given specimen.