HYDROGEN IN PURE ALUMINUM SOLIDIFIED UNIDIRECTIONALLY

被引：22

作者：

IMABAYASHI, M ^{[1
]}

ICHIMURA, M ^{[1
]}

KANNO, Y ^{[1
]}

机构：

[1] FUKUSHIMA TECH COLL,IWAKI,FUKUSHIMA 970,JAPAN

来源：

TRANSACTIONS OF THE JAPAN INSTITUTE OF METALS | 1983年 / 24卷 / 02期

关键词：

D O I：

10.2320/matertrans1960.24.93

中图分类号：

TF [冶金工业];

学科分类号：

0806 [冶金工程];

摘要：

Hydrogen bubbles form ahead of the solid-liquid interface as solidification proceeds. Bubble formation alters with the growth rate, therefore the distribution of hydrogen in the ingot also varies with the growth rate. The distribution of hydrogen shows three typical shapes according to the growth rate. The degassing limit of the freezing out method is nearly equal to the equilibrium solubility of hydrogen under one atmospheric pressure at 933 K. The diffusivity of the hydrogen is 7. 8 multiplied by 10** minus **8 m**2/s.

引用

页码：93 / 100

页数：8