TY - JOUR
T1 - Determination of crystallographic young's modulus for sheet metals by in situ neutron diffraction
AU - Vitzthum, S. J.
AU - Hartmann, C.
AU - Weiss, H. A.
AU - Baumgartner, G.
AU - Hofmann, M.
AU - Volk, W.
N1 - Publisher Copyright:
© Published under licence by IOP Publishing Ltd.
PY - 2017/9/27
Y1 - 2017/9/27
N2 - Elastic recovery is an important issue in sheet metal forming, especially in the context of the upcoming use of high strength steels due to shifted relations between Young's modulus and strength. One important factor when it comes to elastic recovery prediction is a deep understanding for the elasto-plastic characteristics of the material. Today in general simple elastic behavior with constant Young's modulus and Poisson's ratio is assumed. Macroscopic analysis in standard tests shows that these assumptions are insufficient for an appropriate prediction of elastic recovery in sheet metal forming, which is why different phenomenological correlation models are derived. An experimental setup and microscopic investigation to further prove these models and to verify the approaches on another scale for sheet metals is presented within this paper. In the study microscopic deformation behavior of loading and unloading of a HC260LA sheet metal is analysed using in-situ neutron diffraction. Based on the lattice plane strains an orientation specific crystallographic Young's modulus for different rolling directions is determined.
AB - Elastic recovery is an important issue in sheet metal forming, especially in the context of the upcoming use of high strength steels due to shifted relations between Young's modulus and strength. One important factor when it comes to elastic recovery prediction is a deep understanding for the elasto-plastic characteristics of the material. Today in general simple elastic behavior with constant Young's modulus and Poisson's ratio is assumed. Macroscopic analysis in standard tests shows that these assumptions are insufficient for an appropriate prediction of elastic recovery in sheet metal forming, which is why different phenomenological correlation models are derived. An experimental setup and microscopic investigation to further prove these models and to verify the approaches on another scale for sheet metals is presented within this paper. In the study microscopic deformation behavior of loading and unloading of a HC260LA sheet metal is analysed using in-situ neutron diffraction. Based on the lattice plane strains an orientation specific crystallographic Young's modulus for different rolling directions is determined.
UR - http://www.scopus.com/inward/record.url?scp=85032455997&partnerID=8YFLogxK
U2 - 10.1088/1742-6596/896/1/012123
DO - 10.1088/1742-6596/896/1/012123
M3 - Conference article
AN - SCOPUS:85032455997
SN - 1742-6588
VL - 896
JO - Journal of Physics: Conference Series
JF - Journal of Physics: Conference Series
IS - 1
M1 - 012123
T2 - 36th IDDRG Conference 2017: Materials Modelling and Testing for Sheet Metal Forming
Y2 - 2 July 2017 through 6 July 2017
ER -