Observations on the differences reported in region I for the superplastic Zn-22% Al eutectoid

Journal Article · Thu Jan 01 04:00:00 EST 1981 · Scr. Metall.; (United States)

DOI:https://doi.org/10.1016/0036-9748(81)90334-3· OSTI ID:6902685

Grivas, D ^[1]; Morris, Jr, J W; Langdon, T G

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1. Lawrence Berkeley Lab., CA

This paper discusses the different types of creep behavior reported for the steady-state deformation of the superplastic Zn-22% Al eutectoid alloy at low stress levels. All existing theories of creep behavior predict that at sufficiently low stresses the steady-state creep will be diffusion-controlled and will follow a power-law with a strain rate exponent of m = 1.0. The question is whether this diffusional creep mechanism sets the lower bound on superplastic deformation in typical samples of Zn-22% Al, or whether another type of creep behavior intervenes.

• DOE Contract Number: W-7405-ENG-48
• OSTI ID: 6902685
• Journal Information: Scr. Metall.; (United States), Journal Name: Scr. Metall.; (United States) Vol. 15; ISSN SCRMB
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360103* -- Metals & Alloys-- Mechanical Properties
ACTIVATION ENERGY
ALLOYS
ALUMINIUM ALLOYS
CREEP
DATA
DEFORMATION
ENERGY
EQUATIONS
EUTECTOIDS
EXPERIMENTAL DATA
GRAIN GROWTH
GRAPHS
HIGH TEMPERATURE
INFORMATION
MECHANICAL PROPERTIES
MEDIUM PRESSURE
NUMERICAL DATA
PLASTICITY
ZINC ALLOYS