| Budget Amount *help |
¥5,330,000 (Direct Cost: ¥4,100,000、Indirect Cost: ¥1,230,000)
Fiscal Year 2014: ¥260,000 (Direct Cost: ¥200,000、Indirect Cost: ¥60,000)
Fiscal Year 2013: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2012: ¥3,510,000 (Direct Cost: ¥2,700,000、Indirect Cost: ¥810,000)
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| Outline of Final Research Achievements |
In this study, the influence of inhomogeneous region introduced by welding was investigated.Three types of SUS304 stainless tube that have different number of TIG welding parts were prepared to investigate the hydrogen permeation behavior. Hydrogen permeation experiments were carried out in 523, 573, 623 and 673K and Deuterium was used as permeation gas. In each temperature, Deuterium permeation flux in steady state is almost same in each sample and there is no obvious difference in transient behavior to steady state. These results suggested that inhomogeneous region occurred by TIG welding is not influenced on the hydrogen permeation behavior in this temperature range. From the above results, it was found that inhomogeneous region occurred by TIG welding is not influenced on the hydrogen permeation behavior in SUS304 stainless steel. And permeation behavior reported so far can be applied to the evaluation even though object apparatus and plants have many welding parts.
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