Signatures of the unique microstructure of additively manufactured steel observed via diffraction

Reeju Pokharel; L. Balogh; D. W. Brown; Bjorn Clausen; George Thompson Gray; Veronica Livescu; S. C. Vogel; S. Takajo

doi:10.1016/j.scriptamat.2018.06.008

Signatures of the unique microstructure of additively manufactured steel observed via diffraction

Reeju Pokharel
, L. Balogh
, D. W. Brown
, Bjorn Clausen
, George Thompson Gray
, Veronica Livescu
, S. C. Vogel
, S. Takajo

Los Alamos National Laboratory

Research output: Contribution to journal › Article › peer-review

41 Scopus citations

Abstract

A series of measurements were designed to gain confidence in the interpretation of the peak breadth in diffraction patterns collected from additively manufactured material, which has a novel microstructure in comparison to the well understood microstructure of wrought materials. Stainless steels made with two additive manufacturing techniques were compared to wrought material. Similar patterns observed in the scattering vector dependence for additively manufactured and deformed wrought materials suggested that the broadening in both materials was related to dislocations. This was confirmed by heat-treatment, during which both materials exhibited recovery due to the annealing of dislocations at the same temperature.

Original language	English
Pages (from-to)	16-20
Number of pages	5
Journal	Scripta Materialia
Volume	155
DOIs	https://doi.org/10.1016/j.scriptamat.2018.06.008
State	Published - Oct 2018

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abstract = "A series of measurements were designed to gain confidence in the interpretation of the peak breadth in diffraction patterns collected from additively manufactured material, which has a novel microstructure in comparison to the well understood microstructure of wrought materials. Stainless steels made with two additive manufacturing techniques were compared to wrought material. Similar patterns observed in the scattering vector dependence for additively manufactured and deformed wrought materials suggested that the broadening in both materials was related to dislocations. This was confirmed by heat-treatment, during which both materials exhibited recovery due to the annealing of dislocations at the same temperature.",

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AU - Pokharel, Reeju

AU - Balogh, L.

AU - Brown, D. W.

AU - Clausen, Bjorn

AU - Gray, George Thompson

AU - Livescu, Veronica

AU - Vogel, S. C.

AU - Takajo, S.

PY - 2018/10

Y1 - 2018/10

N2 - A series of measurements were designed to gain confidence in the interpretation of the peak breadth in diffraction patterns collected from additively manufactured material, which has a novel microstructure in comparison to the well understood microstructure of wrought materials. Stainless steels made with two additive manufacturing techniques were compared to wrought material. Similar patterns observed in the scattering vector dependence for additively manufactured and deformed wrought materials suggested that the broadening in both materials was related to dislocations. This was confirmed by heat-treatment, during which both materials exhibited recovery due to the annealing of dislocations at the same temperature.

AB - A series of measurements were designed to gain confidence in the interpretation of the peak breadth in diffraction patterns collected from additively manufactured material, which has a novel microstructure in comparison to the well understood microstructure of wrought materials. Stainless steels made with two additive manufacturing techniques were compared to wrought material. Similar patterns observed in the scattering vector dependence for additively manufactured and deformed wrought materials suggested that the broadening in both materials was related to dislocations. This was confirmed by heat-treatment, during which both materials exhibited recovery due to the annealing of dislocations at the same temperature.

UR - https://www.scopus.com/pages/publications/85048818863

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DO - 10.1016/j.scriptamat.2018.06.008

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SP - 16

EP - 20

JO - Scripta Materialia

JF - Scripta Materialia

ER -

Signatures of the unique microstructure of additively manufactured steel observed via diffraction

Abstract

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