HYDROGEN EMBRITTLEMENT RESISTANCE OF AUSTENITIC ALLOYS AND ALUMINIUM ALLOYS
LI Yiyi, FAN Cungan, RONG Lijian, YAN Desheng, LI Xiuyan
Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016
Cite this article:
LI Yiyi FAN Cungan RONG Lijian YAN Desheng LI Xiuyan. HYDROGEN EMBRITTLEMENT RESISTANCE OF AUSTENITIC ALLOYS AND ALUMINIUM ALLOYS. Acta Metall Sin, 2010, 46(11): 1335-1346.
Abstract Hydrogen embrittlement is of the technological importance in which the hydrogen in metallic materials can cause the loss in tensile ductility, cracking or damage and degradation of other mechanical properties. The common hydrogen resistant alloys are austenitic stainless steels, precipitation-strengthened austenitic alloys, low alloy steels and aluminum alloys etc.. As austenitic alloys have high hydrogen resistance properties and their strength can be improved by precipitation strengthening, they are commonly used in hydrogen conditions. IMR had developed a series hydrogen resistant steels, such as HR-1, HR-2, HR-3, J75 and J100 as well as Al-6Mg-0.2Sc-0.15Zr hydrogen resistant aluminum alloy. These alloys posses comprehensive mechanical properties and high hydrogen resistant ability. In addition, alloy smelting, casting, forging, welding and heat treatment should be followed the laws of the preparation. It is important to control the microstructures in order to improve the performance of resistant hydrogen.
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