Masao Kuroda, Isao Gokyu and Kakunosuke Yamamori
In order to explain the experimental results reported in the 1st report, the flow of material was investigated by the plug-method, hardness distribution in the cross section of rolled wire was measured by a micro-vickers hardness tester, and the elastic stress distribution in the round and the flat materials under compression was obtained by the photoelastic method. The results were as follows: (1) The maximum shearing stress took the greatest value at the regions near the contact surfaces with rolls in a round material, but in a flat material at the center of the cross section. From a maximum shearing stress line, the direction of material flow was deduced. (2) The flow of material obtained experimentally agreed with that deduced from the photo-elastic method. (3) The maximum hardness occured at the center of the cross section by medium reduction but the higher the reduction the distribution of hardness became more the homogeneous.
(Received 1958/7/7)
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