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Title: Bend ductility of tungsten heavy alloys

A bend ductility test is used to indicate the formability of tungsten heavy alloys sheet. The primary test bends a notchless Charpy impact specimen to a bend angle of approximately 100C. This can be augmented by a bend-completion test. Finite element modeling as well as strain-gaged bend specimens elucidate the strain distribution in the specimen as a function of material thickness and bend angle. The bend ductilities of 70%W, 807.W and 90%W alloys are characterized. As expected, decreasing thickness or tungsten content enhances bend ductility. Oxidation is not detrimental; therefore, controlled atmosphere is not required for cooling. The potentially detrimental effects of mechanical working (e.g., rolling, roller-leveling, grit blasting, and peening) and machining (e.g., cutting and sanding) are illustrated.
Authors:
; ; ;
Publication Date:
OSTI Identifier:
7187894
Report Number(s):
PNL-SA-21555; CONF-9211158--2
ON: DE93004839
DOE Contract Number:
AC06-76RL01830
Resource Type:
Conference
Resource Relation:
Conference: 1992 international conference on tungsten and tungsten alloys, Arlington, VA (United States), 15-18 Nov 1992
Research Org:
Pacific Northwest Lab., Richland, WA (United States)
Sponsoring Org:
DOE; USDOE, Washington, DC (United States)
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; TUNGSTEN BASE ALLOYS; DUCTILITY; MATERIALS WORKING; BENDING; CHARPY TEST; SHIELDING MATERIALS; ALLOYS; DEFORMATION; DESTRUCTIVE TESTING; FABRICATION; IMPACT TESTS; MATERIALS; MATERIALS TESTING; MECHANICAL PROPERTIES; MECHANICAL TESTS; TENSILE PROPERTIES; TESTING; TUNGSTEN ALLOYS 360103* -- Metals & Alloys-- Mechanical Properties