0
research-article

MODIFIED DYSON CONTINUUM DAMAGE MODEL FOR AUSTENITIC STEEL ALLOY

[+] Author and Article Information
Seok Jun Kang

School of Mechanical Engineering, Sungkyunkwan University 300 Chunchun-dong, Jangan-gu, Suwon, Kyonggi-do 440-746, Korea
ds2552@skku.edu

Hoomin Lee

School of Mechanical Engineering, Sungkyunkwan University 300 Chunchun-dong, Jangan-gu, Suwon, Kyonggi-do 440-746, Korea
soulmilk2@skku.edu

Jae-Boong Choi

School of Mechanical Engineering, Sungkyunkwan University 300 Chunchun-dong, Jangan-gu, Suwon, Kyonggi-do 440-746, Korea
boong33@skku.edu

Moon Ki Kim

School of Mechanical Engineering, Sungkyunkwan University 300 Chunchun-dong, Jangan-gu, Suwon, Kyonggi-do 440-746, Korea
mkkim@me.skku.ac.kr

1Corresponding author.

ASME doi:10.1115/1.4039883 History: Received January 25, 2018; Revised March 05, 2018

Abstract

Ultra Super Critical thermal plants are now in operation around the globe. Their applications include superheaters and reheaters, which generally require high temperature / pressure conditions. To withstand these harsh conditions, an austenitic heat resistant HR3C (ASME TP310NbN) steel was developed for metal creep resistance. As the designed life time of a typical thermal plant is 150,000 hours, it is very important to predict long-term creep behavior. In this study, a three-state variable continuum damage model was modified for better estimation of long-term creep life. Accelerated uniaxial creep tests were performed to determine the material parameters. Also, the rupture type and microstructural precipitation were observed by scanning electron microscopy. The creep life of HR3C steel was predicted using only relatively short-term creep test data and was then successfully verified by comparison with the long-term creep data.

Copyright (c) 2018 by ASME
Your Session has timed out. Please sign back in to continue.

References

Figures

Tables

Errata

Discussions

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 Journal Articles
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