THERMAL HYDROGEN EVOLUTION TECHNIQUE STUDY OF TRAPPED HYDROGEN IN 18NI MARAGING STEEL

Acta Metall Sin

1989, Vol. 25

Issue (1): 71-74 DOI:

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THERMAL HYDROGEN EVOLUTION TECHNIQUE STUDY OF TRAPPED HYDROGEN IN 18NI MARAGING STEEL

YAO Daping;CHEN Wenxiu Institute of Metal Research; Academia Sinica; Shenyang

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YAO Daping;CHEN Wenxiu Institute of Metal Research; Academia Sinica; Shenyang. THERMAL HYDROGEN EVOLUTION TECHNIQUE STUDY OF TRAPPED HYDROGEN IN 18NI MARAGING STEEL. Acta Metall Sin, 1989, 25(1): 71-74.

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Abstract The inieraction of hydrogen with intetface between the precipitates and the martens-itic matrix in 18Ni maraging steel has been studied by means of thermal hydrogen evolutiontechnigue using gas chromatograph as hydrogen detector. An evolution rate peak has been obser-ved at 451K. The hight of the peak relates to the amount and distribution of the precipitates.The activation energy needed to escape the hydrogen from the trap sites is 23.2 kJ/mol.

Key words: 18Ni maraging steel thermal evolution technique hydrogen trap

Received: 18 January 1989

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https://www.ams.org.cn/EN/ OR https://www.ams.org.cn/EN/Y1989/V25/I1/71

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