Identification of sigma and chi phases in duplex stainless steels
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- 作者：Nú ; ria Llorca-Iserna ; nullorca@ub.edu" class="auth_mail" title="E-mail the corresponding author ; Hé ; ctor Ló ; pez-Luquea ; hlopezlu7@alumnes.ub.edu" class="auth_mail" title="E-mail the corresponding author ; Isabel Ló ; pez-Jimé ; neza ; ilopezji9@alumnes.ub.edu" class="auth_mail" title="E-mail the corresponding author ; Maria Victoria Biezmab ; maria.biezma@unican.es" class="auth_mail" title="E-mail the corresponding author
- 关键词：Duplex stainless steel ; Superduplex stainless steel ; Sigma-phase ; Chi-phase ; Aging ; Nucleation and growth mechanism
- 刊名：Materials Characterization
- 出版年：2016
- 出版时间：February 2016
- 年：2016
- 卷：112
- 期：Complete
- 页码：20-29
- 全文大小：5065 K
文摘
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Microscopy was used on heat treated duplex steels for microstructure identification.
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FESEM–BSE observation on unetched samples provided the best contrast between phases.
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Analyses of carbides, nitrides, chi and sigma phases were possible by EDS and WDS.
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Chromium nitrides act as favorable site for the nucleation of chi and sigma phases.
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Secondary phases nucleation kinetics are faster in superduplex than in duplex steels.