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ASTM Selected Technical Papers
Hydrogen Embrittlement: Prevention and Control
By
Louis Raymond
Louis Raymond
editor
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ISBN-10:
0-8031-0959-8
ISBN:
978-0-8031-0959-9
No. of Pages:
443
Publisher:
ASTM International
Publication date:
1988

A noncontacting, spectroscopic technique has been developed to measure weld arc composition in real time. Measurements have been made of hydrogen emission line intensity and correlated with weldment hydrogen content as measured using gas chromatography. A model based on Sievert's Law is proposed to explain the relationship between the partial pressure of hydrogen measured in the welding arc and the hydrogen content of the completed weld.

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