Fracture behavior of bainitic chromium-tungsten and chromium-molybdenum steels

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Bainitic microstructures formed during continuous cooling of low-carbon alloy steels often appear different from classical upper and lower bainite developed by isothermal transformation. The kind of non-classical bainite produced during transformation determines the fracture behavior in a Charpy impact test. Quenching and normalizing treatments of a 3Cr-1.5Mo-0.25V-0.lC steel gave two different bainitic microstructures: a carbide-free acicular structure formed during quenching and a granular bainite formed during normalizing. The superior impact toughness of the quenched steel over the normalized steel was attributed to the difference in microstructure. A similar observation on microstructure was made for a 2.25Cr-2W-0.1C and a 2.25Cr-2W-0.25V-0.lC steel. ... continued below

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31 p.

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Klueh, R.L.; Alexander, D.J. & Maziasz, P.J. December 31, 1994.

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Bainitic microstructures formed during continuous cooling of low-carbon alloy steels often appear different from classical upper and lower bainite developed by isothermal transformation. The kind of non-classical bainite produced during transformation determines the fracture behavior in a Charpy impact test. Quenching and normalizing treatments of a 3Cr-1.5Mo-0.25V-0.lC steel gave two different bainitic microstructures: a carbide-free acicular structure formed during quenching and a granular bainite formed during normalizing. The superior impact toughness of the quenched steel over the normalized steel was attributed to the difference in microstructure. A similar observation on microstructure was made for a 2.25Cr-2W-0.1C and a 2.25Cr-2W-0.25V-0.lC steel. These observations were used to develop new Cr-W steels with improved strength and impact toughness.

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31 p.

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OSTI as DE95013206

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  • 36. mechanical working and steel processing conference, Baltimore, MD (United States), Oct 1994

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  • Other: DE95013206
  • Report No.: CONF-9410290--5
  • Grant Number: AC05-84OR21400
  • Office of Scientific & Technical Information Report Number: 79709
  • Archival Resource Key: ark:/67531/metadc743059

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  • December 31, 1994

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  • Oct. 19, 2015, 7:39 p.m.

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  • Jan. 22, 2016, 11:06 a.m.

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Klueh, R.L.; Alexander, D.J. & Maziasz, P.J. Fracture behavior of bainitic chromium-tungsten and chromium-molybdenum steels, article, December 31, 1994; Tennessee. (digital.library.unt.edu/ark:/67531/metadc743059/: accessed October 17, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.