Abstract
The mechanical behavior of 430 stainless steel and pre-oxidized FeCrAlY open-cell foam materials of various densities was evaluated in compression at temperatures between 450 C and 600 C in an environment containing hydrogen sulfide and water vapor. Both materials showed negligible corrosion due to the gaseous atmosphere for up to 168 h. The monotonic stress-strain response of these materials was found to be dependent on both the strain rate and their density, and the 430 stainless steel foam materials exhibited less stress relaxation than the FeCrAlY for similar experimental conditions. Using the results from multiple hardening-relaxation and monotonic tests, an empirical constitutive equation was derived to predict the stress-strain behavior of FeCrAlY foams as a function of temperature, and strain rate. These results are discussed in the context of using these materials in a black liquor gasifier to accommodate the chemical expansion of the refractory liner resulting from its reaction with the soda in the black liquor.
| Original language | English |
|---|---|
| Pages (from-to) | 450-458 |
| Number of pages | 9 |
| Journal | JOM |
| Volume | 65 |
| Issue number | 3 |
| DOIs | |
| State | Published - Mar 2013 |
Funding
This submission was produced by a contractor of the U.S. government under contract DE-AC05-00OR22725 with the U.S. Department of Energy. The U.S. government retains, and the publisher, by accepting this submission for publication, acknowledges that the U.S. government retains, a nonexclusive, paid-up, irrevocable, worldwide license to publish or reproduce the published form of this submission, or allow others to do so, for U.S. government purposes. The authors would like to thank Adam Willoughby for his assistance in carrying out the experiments described in this article. The authors also would like to recognize Amit Shyam and Jim Keiser for their review of the article prior to submission.
| Funders | Funder number |
|---|---|
| U.S. Government | DE-AC05-00OR22725 |
| U.S. Department of Energy |