氢脆的奥氏体不锈钢低温环境.pdfVIP

ARTICLE IN PRESS I N T E R N A T I O N A L J O U R N A L O F H Y D R O G E N E N E R G Y ] ( ] ] ] ] ) ] ] ] – ] ] ] Available at journal homepage: /locate/ijhydene Hydrogen environment embrittlement of austenitic stainless steels at low temperatures Thorsten Michlera,, Jorg Naumannb ¨ aAdam Opel GmbH, 65423 Russelsheim, Germany ¨ bBMW AG, 80788 Munchen, Germany ¨ a r t i c l e i n f o a b s t r a c t Article history: Hydrogen environment embrittlement (HEE) is a well-known phenomenon in materials Received 1 October 2007 science. For the automotive industry, this topic is of special importance due to the Received in revised form upcoming hydrogen technology. Results on a wide variety of commercially austenitic 12 February 2008 stainless steels are presented which show that the Nickel content is one of the main Accepted 12 February 2008 parameters to meet HEE resistance. In slow strain rate tensile testing no loss in reduction of area at 50 C was found for Ni contents above 12.5 wt%. It was also found that the influence of minor alloying elements and impurities like Mo, Mn, Ti and S is negligible Keywords: within the range investigated here. Another important parameter is local metallurgy. It is Hydr