Hostname: page-component-586b7cd67f-r5fsc Total loading time: 0 Render date: 2024-11-28T11:32:28.385Z Has data issue: false hasContentIssue false
  • English
  • Français

Energy Loss Fine Structure Studies of Temper-Embrittled LowalloySteel

Published online by Cambridge University Press:  02 July 2020

A.J. Papworth  and
D.B. Williams
A.J. Papworth
Affiliation:
Materials Research Center, Lehigh University, Bethlehem, Pennsylvania, 18015-3195, USA.
D.B. Williams
Affiliation:
Materials Research Center, Lehigh University, Bethlehem, Pennsylvania, 18015-3195, USA.
Get access

Abstract

Temper-embrittlement in low-alloy steel has been attributed to the segregation of elements to the prior austenite grain boundary (PAGB). Auger electron spectroscopy (AES) has shown that the embrittlement of the PAGB is due to phosphorus segregation. The problem with this type of analyses is that only the PAGBs that fracture can be analyzed. More recent X-ray studies in a field emission gun scanning transmission microscope have shown that molybdenum, nickel, chromium manganese and phosphorus all segregate to PAGBs, and that these elements can be classified into two segregation groups; those PAGBs that contain nickel, manganese and phosphorus and those PAGBs that contain molybdenum, chromium and phosphorus. AES cannot determine conclusively, which segregation group is responsible for the embrittled PAGBs. The measurement of how embrittled the low-alloy steel has become, requires the knowledge, which PAGBs are embrittled and the percentage of these boundaries within a given volume.

Type
Quantitative Transmission Electron Microscopy of Interfaces (Organized by M. Rüehle, Y. Zhu and U. Dahmen)
Information
Microscopy and Microanalysis , Volume 7 , Issue S2: Proceedings: Microscopy & Microanalysis 2001, Microscopy Society of America 59th Annual Meeting, Microbeam Analysis Society 35th Annual Meeting, Long Beach, California August 5-9, 2001 , August 2001 , pp. 300 - 301
Copyright
Copyright © Microscopy Society of America 2001

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

References.

1.Thauvin, G., Lorang, G., and Leymonie, C.. Met. Trans. 23A (1992) 2243.CrossRefGoogle Scholar
2.Lei, T.C. et al., Mat. Sci. Tech. 6 (1990) 124CrossRefGoogle Scholar
3.Papworth, A.J., Williams, D.B., Scripta Materialia 42 (2000) 1107CrossRefGoogle Scholar
4.Bruley, J. et al., Acta Mat. 47 15 (1999) 4009CrossRefGoogle Scholar
5.Kihn, Y., Johnson, M., Inst. Phys. Conf. Ser. 161 8 (1999) 389Google Scholar
6.Wang, CM. et al., Inst. Phys. Conf. Ser. 165 3(2000) 151Google Scholar