PREPARATION AND INVESTIGATION OF HIGH-STRENGTH WIRES.
Summary technical rept. no. 3, 31 May-31 Dec 66,
OHIO STATE UNIV RESEARCH FOUNDATION COLUMBUS
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An investigation was conducted to determine the effect of oxide scale on the tensile properties of iron wires. Wires were oxidized at 700 and 800 C in a controlled argon-hydrogen-water vapor atmosphere in which both wustite FeO and magnetite Fe3O4 were formed. X-ray analysis showed that the amount of Fe3O4 in the scale decreases with 1 increasing PH2PH2O and 2 increasing temperature. The amount of Fe3O4 in the scale varied from 0 to 10 percent. During mechanical testing of oxidized wires, the following factors were found to increase the strength levels of the wires 1 increasing the PH2PH2O ratio, 2 decreasing the oxidizing time, and 3 decreasing the oxidizing temperature. The yield strength was significantly increased by the oxide coating, but the stress and strain to fracture and the rate of work hardening were slightly decreased by the oxide scale. Author
- Physical Chemistry
- Machinery and Tools