Effect of conditions of preparation of nickel fibers extruded from powders on their strength properties. Part II
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In the manufacture of extruded fibers the main process parameters determining their strength properties are sintering temperature and sintering time up to 1 h. Structural factors adversely affecting the strength of extruded nickel fibers are porosity, interfaces between blocks, and ash residue inclusions. Raising the sintering temperature from 1200 to 1280°C decreases the porosity and amount of ash residue inclusions and smoothens out the fiber surface profile. Under these conditions the strength of the fibers rises from 0.5–0.7 to 0.7–0.8 of the ultimate strength of the cast metal annealed at the same temperature.
KeywordsPorosity Nickel Structural Factor Ultimate Strength Strength Property
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- 1.I. M. Fedorchenko, A. G. Kostornov, O. V. Kirichenko, L. I. Chernyshev, and A. V. Perepelkin, “Some characteristic features of the production of extruded nickel fibers,” Poroshk. Metall., No. 2, 1–4 (1980).Google Scholar
- 2.S. A. Saltykov, Stereometric Metallography [in Russian], Metallurgiya, Moscow (1970).Google Scholar
- 3.R. A. Nilender (editor), Properties and Applications of Metals and Alloys for Electric Vacuum Devices [in Russian], Énergiya, Moscow (1973).Google Scholar
- 4.M. Yu. Bal'shin, Scientific Principles of Powder and Fiber Metallurgy [in Russian], Metallurgiya, Moscow (1972).Google Scholar