| 摘要 |
PURPOSE:To remarkably improve distortion resistance at a processing temperature range in hot plastic processing of alloys by adding a proper quantity of tellurium to an anisotorpic manganese-aluminum-carbon (Mn-Al-C) series alloy. CONSTITUTION:An Mn-Al-C alloy billet composed of 70.2% of manganese in weight, 29.3% of aluminum in weight and 0.5% of carbon in weight and alloy billets added with Te of 0.5, 2.0 and 5.0 in weight ratio for this composition 100 of the above alloy billet respectively are prepared by melting and casting thereof. After these alloy billets are given by the heat processing in which they are cooled from the temperature 1,100 deg.C, they are extrusion-processed (extrusion ratio is equal to 5) at the temperature 700 deg.C. As to the distortion resistance values in extrusion-processing and the magnetic characteristic (BH)max values after extrusion-processing of the respective alloys, when the alloys added with Te of 0.5, 2.0 and 5.0 in weight ratio are compared with the alloy not added with Te, the former magnetic characteristics are about the same as that of the latter and the former distortion resistance values are smaller by 18-25% than that of the latter.
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