鑄造用亞鉛合金に關する研究(第3報) : Zn-Al系合金の容積變化に及ぼすMgの影響

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The authors have previously published a paper on the effect of magnesium on the intercrystalline corrosion in zinc-aluminium alloys, in which magnesium decreases the corrosion promoted by impurities (This Report, Vol.3, 1949, p.280). In this paper, adding small quantities of magnesium 0〜0.1%, to specimens, nearly of the monotectoid composition, the effect of magnesium on the transformation has been studied. The experiments were carried out on quenched specimens by means of the dimentional change method. The authors measured, for a long time, in order to observe the process in aging at room temperature and 95℃. So small a quantity of magnesium 0.02%, retards monotectoid transformation change, but in the 0.1% alloy the change are retarded remarkably at room temperature. On the other hand, in artificial aging at 95℃, this change appears more rapidly than in aging at room temperature. The time necessary for completing the change becomes longer with increasing magnesium content. (Received September 10, 1951)
宇宙航空研究開発機構の論文
1951-11-30