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Crack toughness evaluation of hot pressed and forged beryllium.Fracture toughness tests at room temperature were made on three-point loaded beryllium bend specimens cut from hot pressed block and a forged disk. These specimens had plane proportions conforming to ASTM E 399 and covered a thickness range of from 1/32 to 1/2 in. Two sets of bend specimens were tested, one having fatigue cracks and the other 0.5 mil radius notches. One objective of the investigation was the development of techniques to produce fatigue cracks in accordance with the procedures specified in ASTM E 399. This objective was achieved for the hot pressed material. In plane cracks were not consistently produced in the specimens cut from forged stock.
Document ID
19730041367
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Jones, M. H.
Bubsey, R. T.
Brown, W. F., Jr.
(NASA Lewis Research Center Strength of Materials Branch, Cleveland, Ohio, United States)
Date Acquired
August 7, 2013
Publication Date
March 1, 1973
Publication Information
Publication: Journal of Testing and Evaluation
Volume: 1
Subject Category
Materials, Metallic
Accession Number
73A26169
Distribution Limits
Public
Copyright
Other

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