Superplastic deformation of sheet test pieces machined from Ti-6Al-4V bar |
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Authors: | C D Ingelbrecht P G Partridge |
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Affiliation: | (1) Materials and Structures Department, Royal Aircraft Establishment, GUI4 6TD Farnborough, Hants, UK |
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Abstract: | Sheet tensile test pieces were machined in three orientations from edge textured Ti-6Al-4V bar and tested at temperatures
in the range 800 to 975‡ C and at strain rates of 3 × 10−4 and 1.5×10−3 sec−1. Bands of contiguous alpha grains aligned in the rolling direction caused local variations in the flow stress, strain to
necking, strain rate sensitivity, plastic strain ratio values and surface roughness. Texture effects were only detected at
the lowest test temperature (800‡C) and highest strain rate (1.5×10−3 sec−1). |
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