Effects of oxidation on the impact energy of Hastelloy S and Hastelloy C-4 Charpy V-notch specimens heated in air at 600 to 800 [electronic resource]
The ⁹°SrF₂ heat source being developed at PNL utilizes a Hastelloy S or Hastelloy C-4 outer capsule having a 0.5-in.-thick wall to contain the Hastelloy C-276 inner capsule. The primary objective of the study was to demonstrate that the air oxidation of the outer capsule that could occur during heat...
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Online Access |
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| Corporate Authors: | , |
| Format: | Government Document Electronic eBook |
| Language: | English |
| Published: |
Richland, Wash. : Oak Ridge, Tenn. :
Pacific Northwest National Laboratory (U.S.) ; distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy,
1981.
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| Subjects: |
MARC
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| 245 | 0 | 0 | |a Effects of oxidation on the impact energy of Hastelloy S and Hastelloy C-4 Charpy V-notch specimens heated in air at 600 to 800 |h [electronic resource] |
| 260 | |a Richland, Wash. : |b Pacific Northwest National Laboratory (U.S.) ; |a Oak Ridge, Tenn. : |b distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy, |c 1981. | ||
| 336 | |a text |b txt |2 rdacontent. | ||
| 337 | |a computer |b c |2 rdamedia. | ||
| 338 | |a online resource |b cr |2 rdacarrier. | ||
| 500 | |a Published through the Information Bridge: DOE Scientific and Technical Information. | ||
| 500 | |a 01/01/1981. | ||
| 500 | |a "pnl-3641" | ||
| 500 | |a Fullam, H.T. | ||
| 520 | 3 | |a The ⁹°SrF₂ heat source being developed at PNL utilizes a Hastelloy S or Hastelloy C-4 outer capsule having a 0.5-in.-thick wall to contain the Hastelloy C-276 inner capsule. The primary objective of the study was to demonstrate that the air oxidation of the outer capsule that could occur during heat-source service would not degrade the ductility and Charpy impact strength of the capsule below the licensing requirements given in Section 1.1. The ⁹°SrF₂ heat source under development is intended for general-purpose use. Compatibility considerations limit the interface temperature between the ⁹°SrF₂ and Hastelloy C-276 inner capsule to a maximum of 800°C. The outer capsule surface temperature will be somewhat less than 800°C, and depending on the service, may be substantially lower. The oxidation tests were therefore carried out at 600° to 800°C for exposures up to 10,000h to cover the range of temperature the outer capsule might expect to encounter in service. The results showed that the oxidation of Hastelloy S and Hastelloy C-4 in air at 600° to 800°C is very slow, and both alloys form adherent oxide layers that serve to protect the underlying metal. Subsurface attack of Hastelloy S and Hastelloy C-4 due to oxidation was greater than expected, considering the slow oxidation rates of the two alloys at 600° to 800°C. Estimates of subsurface attack, determined from micrographs of the oxidized specimens, showed erratic results and it was impossible to assign any type of rate equation to the subsurface attack. A conservative estimate of long-term effects can be made using a linear extrapolation of the test results. There were no significant differences between the room-temperature Charpy impact energy of Hastelloy S and Hastelloy C-4 specimens oxidized in air at 600° to 800°C and control specimens heated in vacuum. | |
| 520 | 0 | |a Nesdps Office Of Nuclear Energy Space And Defense Power Systems. | |
| 536 | |b AC06-76RL01830. | ||
| 650 | 7 | |a Mechanical Tests. |2 local. | |
| 650 | 7 | |a Beta Decay Radioisotopes. |2 local. | |
| 650 | 7 | |a Information. |2 local. | |
| 650 | 7 | |a Experimental Data. |2 local. | |
| 650 | 7 | |a Alkaline Earth Isotopes. |2 local. | |
| 650 | 7 | |a Radioisotope Heat Sources. |2 local. | |
| 650 | 7 | |a Containers. |2 local. | |
| 650 | 7 | |a Beta-minus Decay Radioisotopes. |2 local. | |
| 650 | 7 | |a Nickel Base Alloys. |2 local. | |
| 650 | 7 | |a Nickel Alloys. |2 local. | |
| 650 | 7 | |a Hastelloy S. |2 local. | |
| 650 | 7 | |a Even-even Nuclei. |2 local. | |
| 650 | 7 | |a Testing. |2 local. | |
| 650 | 7 | |a Isotopes. |2 local. | |
| 650 | 7 | |a Capsules. |2 local. | |
| 650 | 7 | |a Impact Strength. |2 local. | |
| 650 | 7 | |a Alloys. |2 local. | |
| 650 | 7 | |a Heat Resistant Materials. |2 local. | |
| 650 | 7 | |a Heat Resisting Alloys. |2 local. | |
| 650 | 7 | |a Intermediate Mass Nuclei. |2 local. | |
| 650 | 7 | |a Materials. |2 local. | |
| 650 | 7 | |a Heat Sources. |2 local. | |
| 650 | 7 | |a Materials Testing. |2 local. | |
| 650 | 7 | |a Numerical Data. |2 local. | |
| 650 | 7 | |a Crystal Structure. |2 local. | |
| 650 | 7 | |a Hastelloys. |2 local. | |
| 650 | 7 | |a Strontium Isotopes. |2 local. | |
| 650 | 7 | |a Mechanical Properties. |2 local. | |
| 650 | 7 | |a Molybdenum Alloys. |2 local. | |
| 650 | 7 | |a Chromium Alloys. |2 local. | |
| 650 | 7 | |a Chemical Reactions. |2 local. | |
| 650 | 7 | |a Strontium 90. |2 local. | |
| 650 | 7 | |a Impact Tests. |2 local. | |
| 650 | 7 | |a Microstructure. |2 local. | |
| 650 | 7 | |a Nuclei. |2 local. | |
| 650 | 7 | |a Oxidation. |2 local. | |
| 650 | 7 | |a Data. |2 local. | |
| 650 | 7 | |a Iron Alloys. |2 local. | |
| 650 | 7 | |a Years Living Radioisotopes. |2 local. | |
| 650 | 7 | |a Radioisotopes. |2 local. | |
| 650 | 7 | |a Isotopes And Radiation Sources. |2 edbsc. | |
| 650 | 7 | |a Materials Science. |2 edbsc. | |
| 710 | 2 | |a Pacific Northwest Laboratory. |4 res. | |
| 710 | 2 | |a Pacific Northwest National Laboratory (U.S.). |4 res. | |
| 710 | 1 | |a United States. |b Department of Energy. |b Office of Scientific and Technical Information. |4 dst. | |
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