Abstract
This work investigated the high temperature low cycle fatigue behavior of HF30-type, cast austenitic stainless steel. In addition to the preliminary results from tensile and thermal expansion tests, isothermal strain controlled fatigue tests at 600 °C and 800 °C were carried out with a total strain amplitude from ±0.20 % to ±0.65% and with a strain rate of 10-3/s. The plastic strain amplitudes during cyclic strain loading were measured and correlated with the fatigue lifetime using Coffin-Manson plots at each test temperature. These plots were re-constructed into a general superposition curve containing the results from both temperatures using a constitutive equation of the energy criterion for fatigue failure in terms of thermally activated dislocation motion. The cast and wrought stainless steels showed similar fatigue properties.
Original language | English |
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Pages (from-to) | 244-249 |
Number of pages | 6 |
Journal | Materials Science and Engineering A |
Volume | 526 |
Issue number | 1-2 |
DOIs | |
Publication status | Published - 2009 Nov 25 |
Keywords
- Cast stainless steel
- Coffin-Manson equation
- Low cycle fatigue
ASJC Scopus subject areas
- Materials Science(all)
- Condensed Matter Physics
- Mechanics of Materials
- Mechanical Engineering