Nano reinforcement technique as a tool for enhancement the mechanical and fatigue properties

Curved and Layered Structures

Yahya Mazin Mahmood¹  AL-Mushehdany Abdulwahab¹  Ibrahim Esraa Kadhim¹  Alalkawi Hussain Jasim M.¹ 

[1] Aeronautical Techniques Engineering Department, Bilad Alrafidain University College, Iraq;

关键词: al2o3;    fatigue properties aa7075;    stir casting;    mechanical and fatigue properties;    nano composites;    metal matrix composites;   

DOI  :  10.1515/cls-2022-0026

来源: DOAJ

【 摘 要 】

For the past three decades, AA7075 based metal matrix composite materials showed more attraction due to their enhanced mechanical and fatigue properties. The mechanical and fatigue behaviour of nano composites needs more investigation for their applications. In the present study, stir casting route based AA7075 reinforced with nano – sized, Al2O3 particles (average size 35 nm). The evaluation of mechanical and fatigue properties in the nano cast composites and matrix were carried out at room temperature (RT). The composites and base metalwere subjected to high and low cycle fatigue. Scanning Electron Microscope was used to estimate fatigue behaviour of nano composites samples. The mechanical and fatigue properties was enhanced by the nano Al2O3, when compared to the matrix. The microsite evaluation showed uniform distribution of Al2O3 particles into the matrix and few porosity was recorded. The improvement of the properties above is attributed to the grain refinement and to the distribution of the Al2O3.

【 授权许可】

Unknown