RATIO ANALYSIS DIAGRAM INTERPRETATIONS OF THE FRACTURE TOUGHNESS CHARACTERISTICS OF MARAGING STEEL WELDS IN THE RANGE FROM 150- TO 200-KSI YIELD STRENGTH.
NAVAL RESEARCH LAB WASHINGTON D C
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The ratio analysis diagram RAD, which is a graphical method by which the fracture toughness of a material may be commonly indexed by various energy scales, was used to characterize the fracture behavior of maraging steel weld metals in the yield strength range from 150 to 200 ksi. Dynamic tear DT tests for indexing to the RAD were conducted for four wire compositions. The predicted structural performance ranged from fracture initiation requiring large flaws and plastic instability for 160-ksi yield strength material, to fracture initiation requiring only flaws in the range of tenths of an inch and elastic stresses for 190-ksi yield strength material. Author
- Metallurgy and Metallography