Creep-rupture behavior of candidate Stirling engine alloys after long-term aging at 760/sup 0/C in low-pressure hydrogen
Abstract
Nine candidate Stirling automotive engine alloys were aged at 760/sup 0/C for 3500 h in low pressure hydrogen or argon to determine the resulting effects on mechanical behavior. Candidate heater head tube alloys were CG-27, W545, 12RN72, INCONEL-718, and HS-188 while candidate cast cylinder-regenerator housing alloys were SA-F11, CRM-6D, XF-818, and HS-31. Aging per se is detrimental to the creep-rupture and tensile strengths of the iron-base alloys. The presence of hydrogen does not significantly contribute to strength degradation. Based on current MOD 1A Stirling engine design criteria of a 55% urban - 45% highway driving cycle; CG-27 has adequate 3500 h - 87/sup 0/C creep-rupture strength and SA-F11, CRM-6D, and XF-818 have adequate 3500 h - 775/sup 0/C creep-rupture strength.
- Authors:
- Publication Date:
- Research Org.:
- National Aeronautics and Space Administration, Cleveland, OH (USA). Lewis Research Center
- OSTI Identifier:
- 6793477
- Report Number(s):
- DOE/NASA-51040-55; NASA-TM-83676
ON: DE84013537
- DOE Contract Number:
- AI01-77CS51040
- Resource Type:
- Technical Report
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 33 ADVANCED PROPULSION SYSTEMS; 36 MATERIALS SCIENCE; ALLOY-HS-31; CREEP; HAYNES 188 ALLOY; HEAT RESISTING ALLOYS; INCONEL 718; STIRLING ENGINES; MATERIALS TESTING; AGING; RUPTURES; ALLOYS; CARBON ADDITIONS; CHROMIUM ALLOYS; COBALT ALLOYS; COBALT BASE ALLOYS; ENGINES; FAILURES; HEAT ENGINES; HEAT RESISTANT MATERIALS; INCONEL ALLOYS; IRON ALLOYS; MANGANESE ADDITIONS; MANGANESE ALLOYS; MATERIALS; MECHANICAL PROPERTIES; MOLYBDENUM ALLOYS; NICKEL ALLOYS; NICKEL BASE ALLOYS; NIOBIUM ALLOYS; SILICON ADDITIONS; SILICON ALLOYS; STELLITE; TESTING; TUNGSTEN ALLOYS; 330201* - External Combustion Engines- Stirling Cycle; 360103 - Metals & Alloys- Mechanical Properties
Citation Formats
Titran, R H. Creep-rupture behavior of candidate Stirling engine alloys after long-term aging at 760/sup 0/C in low-pressure hydrogen. United States: N. p., 1984.
Web.
Titran, R H. Creep-rupture behavior of candidate Stirling engine alloys after long-term aging at 760/sup 0/C in low-pressure hydrogen. United States.
Titran, R H. 1984.
"Creep-rupture behavior of candidate Stirling engine alloys after long-term aging at 760/sup 0/C in low-pressure hydrogen". United States.
@article{osti_6793477,
title = {Creep-rupture behavior of candidate Stirling engine alloys after long-term aging at 760/sup 0/C in low-pressure hydrogen},
author = {Titran, R H},
abstractNote = {Nine candidate Stirling automotive engine alloys were aged at 760/sup 0/C for 3500 h in low pressure hydrogen or argon to determine the resulting effects on mechanical behavior. Candidate heater head tube alloys were CG-27, W545, 12RN72, INCONEL-718, and HS-188 while candidate cast cylinder-regenerator housing alloys were SA-F11, CRM-6D, XF-818, and HS-31. Aging per se is detrimental to the creep-rupture and tensile strengths of the iron-base alloys. The presence of hydrogen does not significantly contribute to strength degradation. Based on current MOD 1A Stirling engine design criteria of a 55% urban - 45% highway driving cycle; CG-27 has adequate 3500 h - 87/sup 0/C creep-rupture strength and SA-F11, CRM-6D, and XF-818 have adequate 3500 h - 775/sup 0/C creep-rupture strength.},
doi = {},
url = {https://www.osti.gov/biblio/6793477},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Tue May 01 00:00:00 EDT 1984},
month = {Tue May 01 00:00:00 EDT 1984}
}