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Some observations on the structure of grain boundary fracture surfaces

Author
Chang, H. C.
Published
United States : [publisher not identified], 1955
Springfield, Va.: National Technical Information Service, [approximately 1955]
Physical Description
microfiche : negative ; 11 x 15 cm
Additional Creators
Grant, N. J.

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Summary
A 20 percent Zn-Al alloy fractured in an intercrystalline manner both in creep tests at 500/sup 0/ F and tensile tests at room temperature. The fractured surfaces were studied by both microscopy and x-rays. The intercrystalline fracture surfaces are not smooth but are made up of fracture facets. These fracture structures are dependent on the orientation of the grain boundary with respect to the tension axis and are also influenced by the proximity of other grain boundaries. A layer of material, either heavily cold worked or recrystallized, was invariably created in regions immediately adjacent to the fracture surface. A mechanism for the occurrence of these surface structures is proposed.
Report Numbers
DE85900155; NP-5900155
Other Subject(s)
Collection
NTIS collection.
Note
OSTI Identifier 6141242
Research organization: Massachusetts Inst. of Tech., Cambridge (USA). Dept. of Metallurgy.
View MARC record | catkey: 47358698