The American Society of Mechanical Engineers (ASME) Boiler and Pressure Vessel Committee has approved rules for the use of 6061-T6 and 6061-T651 aluminum for the construction of Class 1 welded nuclear pressure vessels for temperatures not exceeding 149°C (300°F). Nuclear Code Case N-519 will allow the use of this aluminum in the construction of low-temperature research reactors such as the Advanced Neutron Source. The rules for protection against nonductile fracture are discussed. The basis for a value of 25.3 MPa (23 ksi .) for the critical or reference stress intensity factor for use in the fracture analysis is presented. Requirements for consideration of the effects of neutron irradiation on the fracture toughness are discussed.
1.
Belfour Stulen, Inc., 1973, Aerospace Structural Metals Handbook, Vol. 3.
2.
Albertin, L., and DeMastry, J., 1972, “Post-Irradiation Tensile and Fracture Toughness Properties of 6061-T651 Aluminum Plate,” Astronuclear Program Report, Westinghouse Electric Co., Pittsburgh, PA.
3.
Alexander, D. J., 1993, “The Effect of Irradiation on the Mechanical Properties of 6061-T651 Aluminum,” Effects of Radiation on Materials: 16th International Symposium, ASTM STP 1175, American Society for Testing and Materials, January 1.
4.
ALFRAC, 1993, “Aluminum Fracture Toughness Database, An MPD Network File,” STN International, Columbus, OH.
5.
ASME Boiler and Pressure Vessel Code, 1959, Section VIII, “Rules for Construction of Unfired Pressure Vessels.”
6.
ASME Boiler and Pressure Vessel Code, 1994, “Case N-519, Use of 6061-T6 and 6061-T651 Aluminum for Class 1 Nuclear Components, Section III, Division 1,” Supplement 10 to 1992 Edition.
7.
ASME Boiler and Pressure Vessel Committee, 1992, “ASME Boiler and Pressure Vessel Code, Section III: Rules for Construction of Nuclear Power Plant Components, Division I,” American Society of Mechanical Engineers, New York, NY.
8.
American Society for Testing and Materials, 1990, “Standard Test Method for Plane-Strain Fracture Toughness of Metallic Materials,” ASTM Standard E 399–90.
9.
Barker
L. M.
1979
, “Theory for Determining KIc from Small, Non-LEFM Specimens, Supported by Experiments on Aluminum
,” International Journal of Fracture
, Vol. 15
, pp. 515
–536
.10.
Barsom, J. M., and Rolfe, S. T., 1987, Fracture and Fatigue Control in Structures: Applications in Fracture Mechanics, Prentice-Hall, Inc. Englewood Cliffs, NJ.
11.
Broek, D., 1986, Elementary Engineering Fracture Mechanics, Kluwer Academic Publishers, Dordrecht, The Netherlands.
12.
Chu
H. P.
Wacker
G. A.
1972
, “Fracture Toughness and Stress Corrosion Properties of Aluminum Alloy Hand Forgings
,” Journal of Materials
, JMLSA, Vol. 7
, No. 1
, Mar. pp. 95
–99
.13.
Department of Energy, 1984, DOE Order 5480.4, Environmental Protection, Safety, and health Protection Standards, May 15.
14.
Farrell, K., and King, R. T., 1979, “Tensile Properties of Neutron-Irradiated 6061 Aluminum Alloy in Annealed and Precipitation-Hardened Conditions,” Effects of Radiation on Structural Materials, ASTM STP 683, eds., J. A. Sprague and D. Kramer, American Society for Testing and Materials, pp. 440–449.
15.
Handbook on Materials for Superconducting Machinery, 1977, MCIC-HB-04, Metals and Ceramics Information Center, Battelle, Columbus, OH, Jan.
16.
Harrington, R. M., 1991, “Designing for Safety in the Conceptual Design of the Advanced Neutron Source,” Nuclear Safety, Vol. 32, No. 2, Apr.–June.
17.
Heavilin, S. M., 1995, Advanced Neutron Source Materials Surveillance Program, ORNL/M-3733, Oak Ridge National Laboratory, Oak Ridge, TN, Jan.
18.
Kapp, J. A., 1985, “J-R Curve Determination Using Precracked Charpy Specimens and the Load-Drop Method for Crack Growth Measurements,” Fracture Mechanics: Sixteenth Symposium, ASTM STP 868, eds., M. F. Kanninen and A. T. Hopper, American Society for Testing and Materials, Philadelphia, PA, pp. 281–292.
19.
Kassir, M. T., 1989, “Fracture Mechanics Evaluation of the HFBR Beam Tubes,” Brookhaven National Laboratory Structural Analysis Division, Report to the BNL Reactor Division, Aug.
20.
McConnell, P., Scheckherd, J. W., Perrin, J. S., and Wullaert, R. A., 1986, “Experience in Subsized Specimen Testing,” The Use of Small-Scale Specimens for Testing Irradiated Material, ASTM STP 888, eds., W. R. Corwin and G. E. Lucas, American Society for Testing and Materials, Philadelphia, PA, pp. 353–368.
21.
Military Standardization Handbook, 1984, Metallic Materials and Elements for Aerospace Vehicle Structures, Vol. 1, MIL-HDBK-5D, January 1.
22.
Nelson, F. G., and Brownhill, D. J., 1977, “Fracture Characteristics of Plain and Welded 3-In.-Thick Aluminum Alloy Plate at Various Temperatures,” Flaw Growth and Fracture, ASTM STP 631, American Society for Testing and Materials, pp. 285–309.
23.
Nelson, F. G., and Kaufman, J. G., 1973, “Fracture Toughness of Plain and Welded 3-In.-Thick Aluminum Alloy Plate,” Progress in Flaw Growth and Fracture Toughness Testing, ASTM STP 536, American Society for Testing and Materials, pp. 350–376.
24.
PVRC Ad Hoc Task Group on Toughness Requirements, 1972, “PVRC Recommendations on Toughness Requirements for Ferritic Materials,” Welding Research Council Bulletin 175, Aug.
25.
Roberts, R., and Newton, C., 1981, “Interpretive Report on Small-Scale Test Correlations with KIc Data,” Welding Research Council Bulletin 265, Feb.
26.
Schulz, K. C., and Yahr, G. T., 1995, “Preliminary Fracture Analysis of the Core Pressure Boundary Tube (CPBT) for the Advanced Neutron Source Research Reactor,” ORNL/M-4619, Oak Ridge National Laboratory, Oak Ridge, TN, Aug.
27.
Schwarmann, L., 1988, Material Data of High-Strength Aluminum Alloys for Durability Evaluation of Structures, Fatigue Strength, Crack Propagation, and Fracture Toughness, Aluminium-Verlag, Du¨sseldorf, Germany.
28.
Shannon, J. L., Jr., Donald, J. K., and Brown, W. F., Jr., 1977, “Heavy-Section Fracture Toughness Screening Specimen,” Developments in Fracture Mechanics Test Methods Standardization, ASTM STP 632, eds., W. F. Brown, Jr., and J. G. Kaufman, American Society for Testing and Materials, pp. 96–114.
29.
“6061 Aluminum,” 1989, Structural Alloys Handbook, Vol. 3, Battelle, Columbus, OH.
30.
Succop, G., and Brown, W. F., Jr., 1985, “Estimation of KIc From Slow Bend Precracked Charpy Specimen Strength Ratios,” Developments in Fracture Mechanics Test Methods Standardization, ASTM STP 632, eds., W. F. Brown, Jr. and J. G. Kaufman, American Society for Testing and Materials, Philadelphia, PA, pp. 281–292.
31.
U.S. Department of Commerce, 1958, “Tentative Structural Design Basis for Reactor Pressure Vessels and Directly Associated Components (Pressurized, Water Cooled Systems),” December 1, Revision, OTS Document No. PB151987.
32.
Weeks, J. R., Czajkowski, C. J., and Tichler, P. R., 1990, “Effects of High Thermal and High Fast Fluences on the Mechanical Properties of Type 6061 Aluminum in the HFBR,” Effects of Radiation on Materials: 14th International Symposium (Volume II), ASTM STP 1046, eds., N. H. Packan, R. B. Stoller, and A. S. Kumar, American Society for Testing and Materials, Philadelphia, PA, pp. 441–452.
33.
Weeks, J. R., Czajkowski, C. J., and Farrell, K., 1993, “Effects of High Thermal Neutron Fluences on Type 6061 Aluminum,” Effects of Radiation on Materials: 16th International Symposium, ASTM STP 1175, eds., A. S. Kumar, D. S. Gelles, R. K. Nanstad, and E. A. Little, American Society for Testing and Materials, Philadelphia, PA.
34.
West
C. D.
1988
, “Overview of the ANS Project
,” Transactions American Nuclear Society
, Vol. 57
, pp. 288
–289
.35.
Yahr, G. T., 1993, “Fatigue Design Curves for 6061-T6 Aluminum,” Codes and Standards in a Global Environment, ed., James E. Staffiera, ASME PVP-Vol. 259, pp. 43–49.
36.
Zinkham, R. E., and Dedrick, J. H., 1969, “Fracture Behavior of Aluminum Alloys,” Fracture, An Advanced Treatise, Vol. VI, Fracture of Metals, Academic Press, New York, NY, pp. 299–370.
This content is only available via PDF.
Copyright © 1997
by The American Society of Mechanical Engineers
You do not currently have access to this content.
