Abstract
The change in mechanical properties of electrodeposited iron widely depends upon the temperature of heat treatment as well as the conditions of electrodeposition. Mechanical properties of electrodeposited metals exposed at high temperatures are practically important matter owing to the progress of electro-plating for industrial use. Electrodeposited iron is brittle when deposited, but it can be improved by heating.
This paper reports the changes in mechanical properties (such as hardness, tensile strength, elongation, and reduction of area) treated at several temperatures of 200-900°C.
In addition, X-ray diffraction, microphotographs, and other phenomena during tension tests were studied for theoretical consideration. The consideration was mainly explained by dislocation theory.
As the results, it was known that electrodeposited iron which had been heated at 200-190°C, showed excellent mechanical properties over a wide range. The relation between elongation of electro-deposited iron having strong internal stress and heating temperature was indicated by the characteristic curve. When the iron was heated at 900°C, grain size of crystals was rather small.
As the change in elongation and reduction of area depended upon many complicated factors during tension, the above changes in properties cannot theoretically be explained in the present stage.
