Anumola, R and Ravi Kumar, B and Misra, R D K and Mannering, T and Panda, D and Jansto, S G (2008) On the determining role of microstructure of niobium-microalloyed steels with differences in impact toughness. Materials Science and Engineering A, 491 (1-2). pp. 55-61.
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The relationship between microstructure and impact toughness was investigated for niobium-microalloyed steels with similar yield strength. The nominal steel composition was similar and any variation in processing history was unintentional. The general microstructure of the investigated steel was similar and consisted of 85% polygonal ferrite and 15% pearlite. Despite these similarities, they exhibited variation in toughness and were classified as high- and low-toughness steels. Detailed microstructural investigation including stereological analysis and electron microscopy implied that toughness is strongly influenced by mean intercept length of polygonal ferrite and pearlite colony, and their distribution, interlamellar spacing, and degenerated pearlite.
|Uncontrolled Keywords:||Microalloyed steels; Impact toughness; Microstructure|
|Divisions:||Material Science and Technology|
|Deposited By:||INVALID USER|
|Deposited On:||11 Nov 2009 09:24|
|Last Modified:||13 Dec 2011 15:55|
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