This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
Fracture Toughness of A356-T6 Cast Aluminum Alloy
Annotation ability available
Sector:
Language:
English
Abstract
Fracture toughness tests were conducted on the SAEFDE Committee's round-robin A356-T6 cast aluminum alloy materials designated X, Y and Z. Compact type specimens with a thickness of 9.1 and 20.3 mm were tested. Valid Klc values couid not be obtained for 9.1 mm thick specimens but were obtained for 20.3 mm thickness specimens. Due to larger castings, and hence slower cooling rates, a coarse secondary dendrite arm spacing, DAS, of 80 to 90 μm existed in the three materials. Similar Klc values were 18, 16.7 and 17.3
for the A356-T6 materials X, Y and Z respectively. Final fracture surfaces were also similar with predominant cleavage fracture with some localized ductile dimples and secondary cracking.
Recommended Content
Technical Paper | Fatigue Crack Growth of A356-T6 Cast Aluminum Alloy |
Technical Paper | Fatigue and Fracture Toughness of Water-Chilled A356-T6 Cast Aluminum Alloy |
Technical Paper | Low Cycle Fatigue of A356-T6 Cast Aluminum Alloy Wheels |
Topic
Citation
Koh, S. and Stephens, R., "Fracture Toughness of A356-T6 Cast Aluminum Alloy," SAE Technical Paper 881705, 1988, https://doi.org/10.4271/881705.Also In
Fatigue and Fracture Toughness of A356-T6 Cast Aluminum Alloy
Number: SP-0760; Published: 1988-09-01
Number: SP-0760; Published: 1988-09-01
References
- Stephens R.I. Bems H.D. Chernenkoff R.A. Indig R.L Koh S.K. Lingenfelser D.J. Mitchell M.R. Testin R.A. Wigant C.C. “Low Cycle Fatigue of A356-T6 Cast Aluminum Alloy: A Round-Robin Program,”
- Wigant C.C. Stephens R.I. “Fatigue Crack Growth of A356-T6 Cast Aluminum Alloy,”
- “Standard Test Method for Plane-Strain Fracture Toughness of Metallic Materials,” 1986 Annual Book of ASTM Standards 03.01
- Gunther C.K. “Fatigue and Fracture Properties of Cast Aluminum Bulkheads,” Technical Report AFWAL-TR-80-3021 The Boeing Co. Seattle, Washington April 1980
- Doyle, C.E. Jr. et al “Cast Aluminum Primary Aircraft Structure,” Technical Report AFWAL-TR-84-4070 I and II General Dynamics, Fort Worth Division 1984
- Oswalt K.J. Lii Y. “Manufacturing Methods for Process Effects on Aluminum Casting Allowables,” Technical Report AFWAL-TR-4117 Northrop Corp. Hawthorne, California 1985
- Hertzberg R.W. Deformation and Fracture Mechanics of Engineering Materials 2nd John Wiley & Sons New York 1983