Microstructure and tensile properties of carbon fiber reinforced ZL109 alloy for
building
QIN Chunli1，FU Hao2，BAO Anqing3
1.Zhengzhou institute of industrial application and technology，school of architectural engineering，zhengzhou
451100，China； 2. Henan university of urban construction，college of civil engineering and transportation，
zhengzhou 451100，China；3.College of transportation engineering，changsha university of science and
technology，Changsha 410114，China
Abstract：The fiber reinforced Cf/Al matrix composites with a volume ratio of 50% were prepared by vacuum
pressure impregnation on the surface of aluminum-magnesium ZL109 alloy using M40J carbon fiber as reinforcement
material. The structure and mechanical properties of Cf/Al based materials were studied by means of experimental
tests. The results show that the density of Cf/Al based materials decreases to a certain extent compared with
that of the matrix alloy to achieve the effect of weight reduction. After infiltration treatment, no distortion occurs in
the braid prefabricated body, and the fiber bundle gap is closely filled with the matrix metal.Some micropores are
formed and microcracks are formed in the fiber's partial location, which cause great distortion after fiber infiltration.
Interfacial reaction between C fiber and Al matrix appears in Cf/Al substrate. Brittle fracture occurs when the
composite is stretched at room temperature, and the fiber and matrix are tightly bonded in the fracture zone.Increasing
the tensile temperature results in a more uneven fracture structure, a large number of fibers are pulled out, and a
fracture of shear failure type is formed.
2022, Vol. 32 
