New Type of M<SUB>23</SUB>C<SUB>6</SUB> Carbide Precipitation in an Austenitic Stainless Steel Containing Niobium

• Terao Nobuzo

  Laboratory of Physical Metallurgy, Catholic University of Louvain

• Sasmal Bimalendu

  Laboratory of Physical Metallurgy, Catholic University of Louvain

抄録

An electron microscopic study has been made of precipitation in an austenitic stainless steel, 16Cr–16Ni–0.8Nb–1.8Mo–0.06C. Attention has been focused on structural changes which take place during long ageing treatments, extended up to 14.4 Ms (4000 h). In addition to the well-known chromium rich M₂₃C₆ carbides, which appear, together with NbC, from the beginning of the precipitation treatment at 1073 K, a new plate-like morphology of M₂₃C₆ carbide precipitation was observed after long ageing treatments. These M₂₃C₆ carbide plates were formed on {110} planes in regions near pre-existing undissolved NbC particles and their edges were bounded by {111} planes of the fcc alloy matrix. It is suggested that this unexpected process might be favoured by the stresses produced around the undissolved NbC particles.

収録刊行物

• Transactions of the Japan Institute of Metals

  Transactions of the Japan Institute of Metals 22 (6), 379-384, 1981

  社団法人 日本金属学会

キーワード

• General Engineering

詳細情報

• CRID: 1390001205117734400
• NII論文ID: 130003485909
• DOI: 10.2320/matertrans1960.22.379
• COI: 1:CAS:528:DyaL3MXkvVOrurY%3D
• ISSN: 24324701
• ISSN: 00214434
• Web Site: https://www.jstage.jst.go.jp/article/matertrans1960/22/6/22_6_379/_pdf
• 本文言語コード: en
• データソース種別:
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  • Crossref
  • CiNii Articles
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