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Neck formation and cavitation in the superplastic Zn-22% Al eutectoid (1979)

Ahmed, Mohamed M. I. ; Mohamed, Farghalli A. ; Langdon, Terence G.

Springer

Journal of materials science 14 (1979), S. 2913-2918

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ISSN: 1573-4803

Source: Springer Online Journal Archives 1860-2000

Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics

Notes: Abstract The mechanical behaviour of the superplastic Zn-22% Al eutectoid is divisible into three distinct regions. Experiments show the deformation is quasi-uniform at intermediate strain rates in region II, but neck formation is important at low strain rates in region I. Extensive cavitation occurs in regions I and II, but fracture in region I is due to necking. The results provide strong evidence for a decrease in the true value of the strain rate sensitivity in region I.

Type of Medium: Electronic Resource

URL: http://dx.doi.org/10.1007/BF00611474

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