Authors: Webler, B. A.; Nick, E.-M.; O'Malley, R.; Sridhar, S.

Source: Ironmaking & Steelmaking, Volume 35, Number 6, August 2008 , pp. 473-480(8)

Publisher: Maney Publishing

Abstract:

This study investigates some effects of austenite microstructure on processes leading to copper hot shortness. Low carbon steels containing 0?55 wt-% copper were subjected to two thermal profiles in an infrared image furnace with attached confocal scanning laser microscope: hold at 1150°C for 60 s; hold at 1150°C for 60 s, quench to 400°C, reheat to 1150°C. Heat treatments were conducted in dried/deoxidised argon to image microstructures. Subsequent samples were oxidised in air. The oxide/metal interface was studied in a scanning electron microscope. Additional confocal scanning laser microscope experiments involved melting copper directly on the steel. After quench/reheat, austenite grain size decreased by a factor of ?1?7 and grain boundaries were redistributed. Copper evolved during the first heating was no longer found at boundaries. Results from direct copper exposure reveal an apparent effect of boundary character on copper penetration rate. Possible mechanisms by which hot shortness is affected are discussed.

Keywords: SURFACE HOT SHORTNESS; PHASE TRANSFORMATION; HIGH RESIDUAL CONTAINING STEELS; COPPER

Document Type: Research Article

DOI: http://dx.doi.org/10.1179/174328108X318347

Publication date: 2008-08-01

More about this publication?

• Authors wishing to cite fast track papers should give the journal name and the article DOI. This will enable reference linking via CrossRef and allow forward and backward citation tracking systems to associate the fast track citation with the final journal reference.

  This journal features top 10 articles which are freely available. Please click here and click on the 'Top articles' link in the right-hand menu to view the list and start downloading.

• Editorial Board
• Information for Authors
• Subscribe to this Title
• Terms & Conditions
• Online submission site
• Top 10 Articles
• ingentaconnect is not responsible for the content or availability of external websites

Related content

• In this: publication
• By this: publisher
• In this Subject: Materials & Manufacturing ,  Mining & Metallurgy
• By this author: Webler, B. A. ;  Nick, E.-M. ;  O'Malley, R. ;  Sridhar, S.

Website © Publishing Technology. Article copyright remains with the publisher, society or author(s) as specified within the article.

• Terms and conditions
• Privacy policy
• Information for advertisers