Mechanical properties and wear behavior of extruded basalt fibers/7075 aluminum matrix composites used for drill pipes
Yin-long Ma , Zhi-gang Sun , Hong-wei Xiong , Jie Ren , Jing-jing Zhao , Cheng-bin Guo
Journal of Central South University ›› 2025, Vol. 32 ›› Issue (1) : 21 -33.
Basalt fibers/7075 aluminum matrix composites were studied to meet the demand of aluminum alloy drill pipes for material wear resistance. The composites with different basalt fiber additions were prepared by hot pressed sintering and hot extrusion. The mechanical properties as well as friction and wear properties of the composites were studied by microstructure analysis, tensile experiments, friction and wear experiments. The results showed that basalt fibers were oriented and uniformly distributed and led to local grain refinement in the alloy matrix. The hardness and elongation of the composites were improved. The friction coefficient of the composites increased and then decreased, and the maximum wear depth and wear amount decreased, then increased, then decreased again with the growth of basalt fiber addition. Meanwhile, the inclusion of basalt fibers mitigated the uneven wear of the extruded 7075 aluminum alloy. The value of wear depth difference of 7075-0.2BF was the smallest, and that of 7075-2.0BF was close to it. The maximum wear depth and wear volume the 7075-0.2BF and 7075-2.0BF were also the smallest. The inhibition of uneven wear by basalt fibers enhanced of wear resistance for 7075 aluminum alloy, which has reference significance for improving the performance of aluminum alloy drill pipes.
aluminum matrix composites / basalt fibers / mechanical properties / wear behavior
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Central South University
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