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Fracture resistant properties of AerMet steels |
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| Authors: | L C Chhabildas T F Thornhill W D Reinhart M E Kipp D R Reedal L T Wilson D E Grady |
| Affiliation: | a Sandia National Laboratories, Department 1610, P.O. Box 5800, Albuquerque NM 87185-1187, USA b Ktech Corp, 2201 Buena Vista, SE, Suite 400, Albuquerque NM 87106-4265, USA c Naval Surface Warfare Center, Dahlgren Division, Dahlgren, VA, 22448-5000, USA d Applied Research Associates, 4300 San Mateo Blvd., NE, A220, Albuquerque, NM 87110, USA |
| Abstract: | The purpose of this study is to report well-controlled experiments conducted to determine the fracture resistant properties of AerMet® 100 steels. One of the objectives of this study is to determine the influence of fracture toughness properties on the fracture and fragmentation process. Both sphere impact tests and cylinder expansion test geometry were used to determine the dynamic fracture resistant coefficients. These experiments were conducted at strain rates of  14 × 103 /s for the cylinder expansion tests; the strain rates for the sphere impact tests varied over 50 to 100 × 103/s. Fracture resistant coefficients of 60 MPa √m and 20 MPa √m are obtained from the cylinder test and the sphere impact test, respectively. These measurements do not agree with the static fracture toughness values reported in the literature. |
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