Investigation of microstructure in additive manufactured Inconel 625 by spatially resolved neutron transmission spectroscopy
Non-destructive testing techniques based on neutron imaging and diffraction can provide information on the internal structure of relatively thick metal samples (up to several cm), which are opaque to other conventional non-destructive methods. Spatially resolved neutron transmission spectroscopy is...
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doaj-df7e20a4f20f4c1ea7c58435a904e1702021-07-06T11:30:13ZengTaylor & Francis GroupScience and Technology of Advanced Materials1468-69961878-55142016-01-0117132433610.1080/14686996.2016.11902611190261Investigation of microstructure in additive manufactured Inconel 625 by spatially resolved neutron transmission spectroscopyAnton S. Tremsin0Yan Gao1Laura C. Dial2Francesco Grazzi3Takenao Shinohara4Space Sciences Laboratory, University of California at BerkeleyGeneral Electric Global Research CenterGeneral Electric Global Research CenterConsiglio Nazionale delle Ricerche, Istituto Sistemi Complessi (CNR-ISC)Japan Atomic Energy Agency Tokai-muraNon-destructive testing techniques based on neutron imaging and diffraction can provide information on the internal structure of relatively thick metal samples (up to several cm), which are opaque to other conventional non-destructive methods. Spatially resolved neutron transmission spectroscopy is an extension of traditional neutron radiography, where multiple images are acquired simultaneously, each corresponding to a narrow range of energy. The analysis of transmission spectra enables studies of bulk microstructures at the spatial resolution comparable to the detector pixel. In this study we demonstrate the possibility of imaging (with ~100 μm resolution) distribution of some microstructure properties, such as residual strain, texture, voids and impurities in Inconel 625 samples manufactured with an additive manufacturing method called direct metal laser melting (DMLM). Although this imaging technique can be implemented only in a few large-scale facilities, it can be a valuable tool for optimization of additive manufacturing techniques and materials and for correlating bulk microstructure properties to manufacturing process parameters. In addition, the experimental strain distribution can help validate finite element models which many industries use to predict the residual stress distributions in additive manufactured components.http://dx.doi.org/10.1080/14686996.2016.1190261non-destructive testingadditive manufacturingmicrostructureneutron imaging |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Anton S. Tremsin Yan Gao Laura C. Dial Francesco Grazzi Takenao Shinohara |
spellingShingle |
Anton S. Tremsin Yan Gao Laura C. Dial Francesco Grazzi Takenao Shinohara Investigation of microstructure in additive manufactured Inconel 625 by spatially resolved neutron transmission spectroscopy Science and Technology of Advanced Materials non-destructive testing additive manufacturing microstructure neutron imaging |
author_facet |
Anton S. Tremsin Yan Gao Laura C. Dial Francesco Grazzi Takenao Shinohara |
author_sort |
Anton S. Tremsin |
title |
Investigation of microstructure in additive manufactured Inconel 625 by spatially resolved neutron transmission spectroscopy |
title_short |
Investigation of microstructure in additive manufactured Inconel 625 by spatially resolved neutron transmission spectroscopy |
title_full |
Investigation of microstructure in additive manufactured Inconel 625 by spatially resolved neutron transmission spectroscopy |
title_fullStr |
Investigation of microstructure in additive manufactured Inconel 625 by spatially resolved neutron transmission spectroscopy |
title_full_unstemmed |
Investigation of microstructure in additive manufactured Inconel 625 by spatially resolved neutron transmission spectroscopy |
title_sort |
investigation of microstructure in additive manufactured inconel 625 by spatially resolved neutron transmission spectroscopy |
publisher |
Taylor & Francis Group |
series |
Science and Technology of Advanced Materials |
issn |
1468-6996 1878-5514 |
publishDate |
2016-01-01 |
description |
Non-destructive testing techniques based on neutron imaging and diffraction can provide information on the internal structure of relatively thick metal samples (up to several cm), which are opaque to other conventional non-destructive methods. Spatially resolved neutron transmission spectroscopy is an extension of traditional neutron radiography, where multiple images are acquired simultaneously, each corresponding to a narrow range of energy. The analysis of transmission spectra enables studies of bulk microstructures at the spatial resolution comparable to the detector pixel. In this study we demonstrate the possibility of imaging (with ~100 μm resolution) distribution of some microstructure properties, such as residual strain, texture, voids and impurities in Inconel 625 samples manufactured with an additive manufacturing method called direct metal laser melting (DMLM). Although this imaging technique can be implemented only in a few large-scale facilities, it can be a valuable tool for optimization of additive manufacturing techniques and materials and for correlating bulk microstructure properties to manufacturing process parameters. In addition, the experimental strain distribution can help validate finite element models which many industries use to predict the residual stress distributions in additive manufactured components. |
topic |
non-destructive testing additive manufacturing microstructure neutron imaging |
url |
http://dx.doi.org/10.1080/14686996.2016.1190261 |
work_keys_str_mv |
AT antonstremsin investigationofmicrostructureinadditivemanufacturedinconel625byspatiallyresolvedneutrontransmissionspectroscopy AT yangao investigationofmicrostructureinadditivemanufacturedinconel625byspatiallyresolvedneutrontransmissionspectroscopy AT lauracdial investigationofmicrostructureinadditivemanufacturedinconel625byspatiallyresolvedneutrontransmissionspectroscopy AT francescograzzi investigationofmicrostructureinadditivemanufacturedinconel625byspatiallyresolvedneutrontransmissionspectroscopy AT takenaoshinohara investigationofmicrostructureinadditivemanufacturedinconel625byspatiallyresolvedneutrontransmissionspectroscopy |
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1721317587564888064 |