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- W2741094208 abstract "Due to its high cost (based on special material and processing, very fine tolerances, and high demands on repeated thermo-mechanical performance), the most critical metal forming component is usually considered to be the die. The three major modes of in-service die failure are fatigue, wear, and plastic deformation, fatigue fracture being the predominant one. Plane-strain fracture toughness (KIC) is perhaps the most important material property in the prediction and prevention of fracture, and in damage tolerance assessment. As fracture is the principal die failure mode, determination of KIC becomes critical to evaluating and predicting die performance. It is known with certainty that the yield strength of certain materials is quite sensitive to temperature and strain-rate changes. Traditional methods of KIC determination are therefore not often feasible. Through the development of correlations between impact energy and fracture toughness, indirect methods (such as the Charpy impact test) can be used to predict KIC. This paper will review the published data on impact energy and fracture toughness of a variety of steels including some high strength steels as well as tool steels. A strategy will then be proposed to use empirical relationships between fracture toughness and Charpy impact energy to assess KIC of ultrahigh strength steels (such as H-13) at different tempering and specimen temperatures." @default.
- W2741094208 created "2017-08-08" @default.
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- W2741094208 date "2001-01-01" @default.
- W2741094208 modified "2023-09-27" @default.
- W2741094208 title "DETERMINATION OF FRACTURE TOUGHNESS OF TOOL STEELS" @default.
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