日本金属学会誌

J. Japan Inst. Metals, Vol. 59, No. 9 (1995),
pp. 910-916

Observation of Hydrogen Trapping Sites at 77 K Exposure in SUS316LSteel by means of Tritium TEM Autoradiography

Hideo Saito, Minoru Mori and Yoichi Ishida

1Institute of Industrial Science, The University of Tokyo, Tokyo
2Faculty of Engineering, The University of Tokyo, Tokyo

Abstract:

Behavior of hydrogen in an austenitic stainless steel SUS316L was investigated by tritium transmission electron microscopic autoradiography exposed at liquid nitrogen temperature. In this case, the size of blackened silver particles was about 0.04 μm, that was one third of the particles size when exposed at 253 K.
Blackened silver particles at liquid nitrogen temperature were observed at precipitates of the grain boundaries, in the vicinity of triple points, along coherent twin boundary, at facet corners of twins, dislocations and interfaces between precipitates and the matrix phase.


(Received April 7, 1995)

Keywords:

tritium autoradiography, transmission electron microscopy, austenitic stainless steel, liquid nitrogen temperature, grain boundary


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