Large-Strain Baushinger Effect in Austenitic Stainless Steel Sheet
Large-strain Bauschinger effect in cold-rolled austenitic stainless steel sheet is investigated after large amounts of prestrain. The material is prestrained in uniaxial tension, and the tensile properties of the prestrained material are measured in different angles with respect to the prestraining direction. By comparing the differences in the yield stresses in different orientations, the effect of prestraining on material anisotropy is studied. The method is applied to AISI 304 –type stainless steel sheet. The test results are analyzed using a combined isotropic-kinematic hardening model. The results indicate that this kind of material shows a considerable Bauschinger effect. Transient and permanent softening is observed in the experiments. The experimental Youngs modulus also seems to decrease with prestrain.
Austenitic stainless steel uniaxial prestraining constitutive behavior Baushinger effect
T.Manninen P.Myllykoski T.Taulavuori A.S.Korhonen
Helsinki University of Technology Structural Mechanics P.O.Box 2100, 02015 TKK, Finland Nokia Technology Platforms Ltd P.O.Box 407, 00045 Nokia Group, Finland Outokumpu Stainless Oy 95400 Tornio, Finland Helsinki University of Technology Materials Science and Engineering P.O.Box 6200, 02015 TKK, Finland
国际会议
郑州
英文
2007-10-23（万方平台首次上网日期，不代表论文的发表时间）