Mechanical and Micro structural Characterization of Al-Al/B4C Laminated Composites Depending on Manufacturing Parameters

9th International Conference on Tribology

Göcer, A.^1 ; Nair, F.^1 ; Karami, M.B.^1

Erciyes University, Department of Mechanical Engineering, Kayseri

38039, Turkey^1

关键词: Bimetal composites;    Circular cross-sections;    Extrusion techniques;    Hardness distribution;    Laminated metal composites;    Manufacturing parameters;    Micro-structural characterization;    Powder-in-tube method;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/295/1/012043/pdf
DOI  :  10.1088/1757-899X/295/1/012043

来源: IOP

【 摘 要 】

In this study, it is aimed to produce a layered composite structure with Al sheath and Al / B4C cored by extrusion technique and to characterize the mechanical and micro structure of the products. In the production of composite billets, powder in tube (PIT) method was used. In this method, Al7075 (Ø 30 mm) tube is filled with Al2124 / B4C powder mixtures. The semi-finished composite billets were sintered at 500 ° C for 1 hour and extruded at the extrusion ratios of R = 14 R = 9 and R = 6.25 at the same temperature to obtain circular cross-section rods. The density changes, hardness distributions and sheath-core section ratios of these bars were determined. The changes of these values depending on the extrusion rate and B4C ratio were investigated. It is also revealed in the micro structure changes depending on these ratios.