Micromechanical behaviour of Ni-based superalloys close to the yield point: a comparative study between neutron diffraction on different polycrystalline microstructures and crystal plasticity finite element modelling
Micromechanical behaviour of Ni-based superalloys close to the yield point: a comparative study between neutron diffraction on different polycrystalline microstructures and crystal plasticity finite element modelling
复制标题
镍基高温合金接近屈服点的微观力学行为:不同多晶微观结构的中子衍射与晶体塑性有限元建模的比较研究
DOI:
10.1007/s00161-018-0720-0
复制
发表时间:
--
影响因子:
2.6
通讯作者:
Werner
中科院分区:
文献类型:
--
作者:
Kobylinski;Lawitzki;R. Hofmann;Krempaszky;Werner
To investigate the microstructure-dependent relationships in polycrystalline Ni-based superalloys (Haynes 282 and Inconel 718) deformed in the elastoplastic regime, the lattice strain evolution along various macroscopic directions and along various crystallographic directions is monitored via in situ neutron diffraction during uniaxial tensile loading. In addition, a crystal plasticity-based finite element model is set up to describe the micromechanical behaviour of a unit cell within a uniaxially loaded polycrystalline aggregate. Appropriate postprocessing of the (micromechanical) field quantities allows to simulate the diffraction experiment and thus to directly compare and to discuss experimental and modelling results.
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