Development of local shear bands and orientation gradients in fcc polycrystals

Conference · Mon May 01 00:00:00 EDT 1995

OSTI ID:70792

Beaudoin, Jr, A J ^[1]; Mecking, H ^[2]; Kocks, U F ^[3]

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1. Reynolds Metals Co., Richmond, VA (United States)
2. Technical Univ., Hamburg (Germany)
3. Los Alamos National Lab., NM (United States)

A finite element formulation which derives constitutive response from crystal plasticity theory is used to examine localized deformation in fcc polycrystals. The polycrystals are simple, idealized arrangements of grains. Localized deformations within individual grains lead to the development of domains that are separated by boundaries of high misorientation. Shear banding is seen to occur on a microscopic scale of grain dimensions. The important consequences of these simulations are that the predicted local inhomogeneities are meeting various requirements which make them possible nucleation sites for recrystallization.

• Research Organization: Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
• Sponsoring Organization: USDOE, Washington, DC (United States); Department of Defense, Washington, DC (United States)
• DOE Contract Number: W-7405-ENG-36
• OSTI ID: 70792
• Report Number(s): LA-UR-95-1319; CONF-9506144-6; ON: DE95012072; CNN: N00014-90-J-1810; TRN: 95:015383
• Resource Relation: Conference: 5. international conference on numerical methods in industrial forming processes (NUMIFORM), Ithaca, NY (United States), 18-21 Jun 1995; Other Information: PBD: [1995]
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
FCC LATTICES
DEFORMATION
BICRYSTALS