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Using Chevron-Notch, Short-Bar Specimens for Measuring the Fracture Toughness of a Martensitic Stainless Steel at High Hardness
註釋Fracture toughness tests were conducted at room temperature and at - 196°C on a martensitic stainless steel that had been quenched and tempered to a hardness of Rockwell C 61-63. The fracture toughness specimens were chevron-notch, short-bar specimens for which B was 12.7 mm and W was 25.4 mm. Tests were conducted in accordance with ASTM Test Method for Plane-Strain (Chevron Notch) Fracture Toughness of Metallic Materials (E 1304-89).