Paper Title:
Low Cycle Fatigue Behavior of 429EM Ferritic Stainless Steel at Elevated Temperatures
  Abstract

In recent, ferritic stainless steels are widely used in high temperature structure because of their high resistance in thermal fatigue and low prices. Tensile and low cycle fatigue(LCF) tests on 429EM stainless steel were performed at several temperatures from room temperature to 600°C. Elastic modulus, yield stress and ultimate tensile strength(UTS) decreased with increasing temperature. Considerable cyclic hardening occurred at 200°C and 400°C. 475°C embrittlement observed could not explain this phenomenon but dynamic strain aging(DSA) observed from 200°C to 500°C could explain the hardening mechanism at 200°C and 400°C. And it was observed that plastic strain energy density(PSED) was useful to predict fatigue life when large cyclic hardening occurred. Fatigue life using PSED over elastic modulus could be well predicted within 2X scatter band at various temperatures.

  Info
Periodical
Key Engineering Materials (Volumes 261-263)
Edited by
Kikuo Kishimoto, Masanori Kikuchi, Tetsuo Shoji and Masumi Saka
Pages
1135-1140
DOI
10.4028/www.scientific.net/KEM.261-263.1135
Citation
K. O. Lee, S. S. Yoon, S. B. Lee, B. S. Kim, "Low Cycle Fatigue Behavior of 429EM Ferritic Stainless Steel at Elevated Temperatures", Key Engineering Materials, Vols. 261-263, pp. 1135-1140, 2004
Online since
April 2004
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$32.00
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