日本金属学会誌

J. Japan Inst. Metals, Vol. 52, No. 5 (1988),
pp. 517-522

Fabrication of Fiber Reinforced Metal Using a Superplastic Zn-22%Al Alloy

Yasuo Uchiyama1, Sinya Sato2, Masayuki Hasaka1 and Hideto Koga1

1Department of Materials Science and Engineering, Faculty of Engineering, Nagasaki University, Nagasaki
2Graduate Student, Nagasaki University, Nagasaki

Abstract:

To examine the application of fine grain superplasticity for the fabrication of fiber rein-forced metal matrix composites, stainless steel wire of 200 μ m diameter and SiC fiber of ca. 15 μ m diameter were consolidated with a matrix metal of Zn-22 mass%Al alloy, by hot pressing. Hot pressing was carried out in air at 373--473 K for 3.6 ks under the load of 7.85--39.2 kN.
Being consolidated with a single wire or fiber, the matrix metal flowed around the wire or fiber. The bonding strength of reinforcement-matrix interface was 22.7 MPa when the stainless steel wire was consolidated with Zn-22 mass%Al alloy at 473 K under the load of 39.2 kN.
When a SiC fiber tow was consolidated with Zn-22 mass%Al alloy, composites were obtained under the consolidating conditions studied except at low temperatures and low consolidating loads. When the composites were consolidated at elevated temperatures and high consolidating loads, the fibers of tow were widely spread with the flow of matrix metal and had a tendency to come into line.


(Received 1987/11/11)

Keywords:

fiber reinforced metal, superplastic alloy, fine grain superplasticity, zinc-22% aluminum alloy, stainless steel wire, silicon-carbide fiber tow, spread of fiber tow


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