Metallurgical Transactions A

, Volume 17, Issue 5, pp 815–822 | Cite as

Characterization of cryogenic Fe-6Ni steel fracture modes: A three dimensional quantitative analysis

  • G. O. Fior
  • J. W. Morris
Mechanical Behaviour
Received:

Abstract

Quantitative three dimensional analyses of fracture surfaces of Fe-6Ni cryogenic steel were used to study the effect of temperature variations on the geometry of the characteristic features in different fracture modes. Stereo SEM techniques combined with stereo photogrametry provide the tools to perform such analysis on standard Charpy specimens tested with appropriate instrumentation over a 300 deg temperature range. The characteristic features of the ductile fracture mode were found to maintain a constant aspect ratio for these temperatures, while the brittle fracture modes exhibit an aspect ratio that is temperature dependent. This geometrical factor dependence of temperature in the nonductile case resembles that of the Charpy impact energy for the same temperature range.

Keywords

Fracture Surface Metallurgical Transaction Fracture Mode Charpy Impact Charpy Impact Test 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.
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Copyright information

© The Metallurgical of Society of AIME 1986

Authors and Affiliations

  • G. O. Fior
    • 1
  • J. W. Morris
    • 2
  1. 1.TEGAL Corp.Novato
  2. 2.Department of Materials Science and Mineral EngineeringUniversity of CaliforniaBerkeley

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