Fracture Appearance of Steels in Transition: Experimental Observations and Measurements

Autor:	Christopher N. McCowan, Raymond L. Santoyo, Enrico Lucon
Rok vydání:	2018
Předmět:	020303 mechanical engineering & transports Materials science Brittleness 0203 mechanical engineering Shear (geology) Mechanics of Materials Mechanical Engineering Charpy impact test General Materials Science 02 engineering and technology Composite material Brittle fracture
Zdroj:	Journal of Testing and Evaluation. 47:20170448
ISSN:	0090-3973
DOI:	10.1520/jte20170448
Popis:	Measuring the shear fracture appearance (SFA) of steel in the ductile-to-brittle transition region is challenging, largely because many modern steels have complicated mixtures of brittle and ductile fracture features that the carbon steels used to develop SFA measurements did not possess. Features of Charpy impact specimen fracture surfaces for nine different steels are reported here. The mixtures of ductile and brittle fracture surface features observed in the transition regions of these steels are presented in context with their instrumented impact data and fractographs illustrating the SFA measurements. The study then discusses the accuracy of the SFA measurements and suggests ways to improve them. These data can be used for future work focused on improving SFA measurements and will be of use to engineers interested in the ductile-to-brittle transition in steel and the fracture surface features related to it.
Databáze:	OpenAIRE
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