On the failure of pressure-sensitive plastic materials. Part 2: Comparisons with experiments on ultra fine grained Fe-10% Cu alloys

Journal Article · Sat Mar 15 04:00:00 EST 1997 · Scripta Materialia

DOI:https://doi.org/10.1016/S1359-6462(96)00443-5· OSTI ID:464813

Carsley, J E; Milligan, W W; Zhu, X H; Aifantis, E C ^[1]

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1. Michigan Technological Univ., Houghton, MI (United States)

In Part 1 of this article the authors presented theoretical results pertaining to the yield behavior of pressure-sensitive plastic materials with emphasis on shear band width and orientation. These results are applied here to model the experimental data obtained for compression and tension tests of ultra fine grained Fe-10% Cu alloys. As will be reported in detail elsewhere these alloys exhibit almost perfectly plastic behavior and deform by intense shear banding as the only mode of plastic deformation. Due to the fine grain structure, it may be speculated that grain rotation and void formation can contribute significantly to the aforementioned shear band mechanism for plastic flow, in addition to the traditional dislocation motion. It follows that the pressure-sensitive plastic models elaborated upon in Part 1 may be suitable candidates for the description of the shear band behavior for these alloys. In fact, it is shown in Part 2 that the mechanical property data obtained for the strengths in tension and compression, the shear band angles and the shear band widths verify the theoretical expressions derived in Part 1 for the yield condition, the shear band orientation, and the shear band width.

• OSTI ID: 464813
• Journal Information: Scripta Materialia, Journal Name: Scripta Materialia Journal Issue: 6 Vol. 36; ISSN 1359-6462; ISSN SCMAF7
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
COMPRESSION STRENGTH
COPPER ALLOYS
DISLOCATIONS
GRAIN ORIENTATION
IRON BASE ALLOYS
MECHANICAL PROPERTIES
PLASTICITY
POROSITY
TENSILE PROPERTIES
VALIDATION