0

Microstructures of Grade 91 Steels Under Long-Term Creep Conditions PUBLIC ACCESS

[+] Author Affiliations
Kenji Kako, Susumu Yamada, Masatsugu Yaguchi, Yusuke Minami

Central Research Institute of Electric Power Industry, Yokosuka, Japan

Paper No. ETAM2018-6712, pp. V001T01A002; 6 pages
doi:10.1115/ETAM2018-6712
From:
  • ASME 2018 Symposium on Elevated Temperature Application of Materials for Fossil, Nuclear, and Petrochemical Industries
  • ASME 2018 Symposium on Elevated Temperature Application of Materials for Fossil, Nuclear, and Petrochemical Industries
  • Seattle, Washington, USA, April 3–5, 2018
  • Conference Sponsors: ASME Standards and Certification
  • ISBN: 978-0-7918-4076-4
  • Copyright © 2018 by ASME

abstract

Type IV damage has been found at several ultra-supercritical (USC) plants that used high-chromium martensitic steels in Japan, and the assessment of the remaining life of the steels is important for electric power companies. The assessment of the remaining life needs long-term creep data for over 10 years, but such data are limited. We have attempted to assess the remaining life by creep tests and by microstructural observation of Grade 91 steels welded pipes which were used in USC plants for over 10 years. Following the results of microstructural observation of USC plant pipes, we find that microstructures, especially distribution of MX precipitates, have large effect on the creep life of Grade 91 steels.

Copyright © 2018 by ASME
Topics: Creep , Steel
This article is only available in the PDF format.

Figures

Tables

Interactive Graphics

Video

Country-Specific Mortality and Growth Failure in Infancy and Yound Children and Association With Material Stature

Use interactive graphics and maps to view and sort country-specific infant and early dhildhood mortality and growth failure data and their association with maternal

NOTE:
Citing articles are presented as examples only. In non-demo SCM6 implementation, integration with CrossRef’s "Cited By" API will populate this tab (http://www.crossref.org/citedby.html).

Some tools below are only available to our subscribers or users with an online account.

Related Content

Customize your page view by dragging and repositioning the boxes below.

Related eBook Content
Topic Collections

Sorry! You do not have access to this content. For assistance or to subscribe, please contact us:

  • TELEPHONE: 1-800-843-2763 (Toll-free in the USA)
  • EMAIL: asmedigitalcollection@asme.org
Sign In