Effect of Tempering and Baking on the Charpy Impact Energy of Hydrogen-Charged 4340 Steel

K. Mori,E. W. Lee,W. E. Frazier, K. Niji, G. Battel, A. Tran, E. Iriarte, O. Perez, H. Ruiz, T. Choi,P. Stoyanov, J. Ogren, J. Alrashaid,O. S. Es-Said

Journal of Materials Engineering and Performance（2014）

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摘要

Tempered AISI 4340 steel was hydrogen charged and tested for impact energy. It was found that samples tempered above 468 °C (875 °F) and subjected to hydrogen charging exhibited lower impact energy values when compared to uncharged samples. No significant difference between charged and uncharged samples tempered below 468 °C (875 °F) was observed. Neither exposure nor bake time had any significant effect on impact energy within the tested ranges.

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关键词

4340 steel, baking, charpy impact test, hydrogen charging

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