Compressive and Tensile Deformation Behavior of Consolidated Fe

Journal Article · Tue Jan 01 04:00:00 EST 2008 · Materials Science and Engineering A

DOI:https://doi.org/10.1016/j.msea.2007.08.088· OSTI ID:940337

Cheng, Sheng ^[1]; Milligan, W W ^[2]; Wang, Xun-Li ^[1]; Liaw, Peter K ^[3]; Choo, H ^[3]

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1. ORNL
2. Michigan State University, East Lansing
3. University of Tennessee, Knoxville (UTK)

The deformation behavior was investigated in a consolidated Fe with a grain size ranging from submicrometer to tens of micrometer values under uniaxial compression and tension. In compression, shear banding occurred significantly at grain sizes >500 nm while only a single band was observed in samples with grain sizes of {approx} 100 nm. For the samples with grain sizes <{approx} 800 nm, the shear banding took place at angles of 48-51{sup o}. When the grain sizes were >{approx} 800 nm, the shear banding happened at an angle of 45{sup o} (in the maximum shear-stress plane). In tension, premature fracture happened in samples with grain sizes <1 {micro}m while shear banding was observed at grain sizes >1 {micro}m, and the shear banding angle was also close to 45{sup o}. For the samples with grain sizes > 2 {micro}m, homogeneous deformation took over in compression with a yield-point phenomenon being observed, but Lueders banding localization occurred in tension.

• Research Organization: Oak Ridge National Laboratory (ORNL)
• Sponsoring Organization: SC USDOE - Office of Science (SC)
• DOE Contract Number: AC05-00OR22725
• OSTI ID: 940337
• Journal Information: Materials Science and Engineering A, Journal Name: Materials Science and Engineering A Journal Issue: 40180 Vol. 493
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
COMPRESSION STRENGTH
DEFORMATION
FRACTURE PROPERTIES
GRAIN SIZE
IRON
SHEAR