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TECHNICAL PAPERS

A Study of Inhomogeneous Plastic Deformation of 1045 Steel

[+] Author and Article Information
Jixi Zhang, Yanyao Jiang

Department of Mechanical Engineering (312), University of Nevada, Reno, NV 89557

J. Eng. Mater. Technol 126(2), 164-171 (Mar 18, 2004) (8 pages) doi:10.1115/1.1647125 History: Received December 02, 2002; Revised November 05, 2003; Online March 18, 2004
Copyright © 2004 by ASME
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References

Figures

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Microstructure of SAE 1045 steel after normalization
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Monotonic tension behavior of 1045 steel: (a) monotonic stress-extensometer strain curve; and (b) variations of local strains
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Cyclic deformation of 1045 steel under fully reversed stress-controlled uniaxial loading: (a) variations of local strain amplitudes and propagation of plastic zone; and (b) variations of local mean strains
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Influence of monotonic tension preload on cyclic deformation: (a) local tensile strains under monotonic tension preload; (b) variations of local strain amplitudes with loading cycles in subsequent cyclic loading; and (c) variations of local mean strains with loading cycles in subsequent cyclic loading
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Cyclic deformation of 1045 steel under three-step stress-controlled cyclic loading: (a) variations of strain amplitudes; and (b) variations of mean strains
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Typical dislocation arrangement during the incubation stage
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Typical dislocation arrangements during the propagation stage (at cycle 420): (a) at Gage 10 (low local strain amplitude: 0.165%); (b) at Gage 6 (medium local strain amplitude: 0.2%); and (c) at Gage 2 (high local strain amplitude: 0.23%)
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Typical dislocation arrangement at the saturation stage
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Dislocation cells are formed at first at the grain/phase boundary (at 1550th cycle in a saturation stage)

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