Residual stress and mechanical property evaluation of compacted iron-brass powders using neutron diffracation and instrumented indentation
(English)Manuscript (preprint) (Other academic)
Neutron diffraction was used to measure residual stresses in a powder metallurgical green body manufactured by high speed compaction of iron and 15 wt.% brass powders. The tests were performed with the aid of radial collimators configured to measure spatially resolved strains in the axial and radial directions in a cylindrical specimen. Compressive residual stresses were present in the iron phase and appear to be larger in the lower to middle sections along the specimen's axis. Furthermore, a combination of sharp (Berkovich) and spherical (Hertzian) indenters were used for instrumented indentation experiments. The results from the spherical indenter were used to determine the elastic modulus, while results from the sharp indenter were used to measure the hardness.
Iron-Brass Powder, Neutron diffraction, Nanoindentation, Residual Stress, Mechanical Properties
Engineering and Technology
IdentifiersURN: urn:nbn:se:liu:diva-86864OAI: oai:DiVA.org:liu-86864DiVA: diva2:582955
Parts of this manuscript have been published in the following article: http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-300792013-01-072013-01-072013-01-07