Recrystallization Behavior of a Laser Additive Manufactured Austenitic Stainless Steel

Smith, Thale Ranger; Sugar, Joshua Daniel; Schoenung, Julie M.; San Marchi, Christopher W.

doi:10.1007/s11837-017-2711-1

Recrystallization Behavior of a Laser Additive Manufactured Austenitic Stainless Steel

Journal Article · Sun Oct 01 04:00:00 EDT 2017 · JOM. Journal of the Minerals, Metals & Materials Society

DOI:https://doi.org/10.1007/s11837-017-2711-1· OSTI ID:1429646

Smith, Thale Ranger ^[1]; Sugar, Joshua Daniel ^[2]; Schoenung, Julie M. ^[3]; San Marchi, Christopher W. ^[2]

Univ. of California, Davis, CA (United States)
Sandia National Lab. (SNL-CA), Livermore, CA (United States)
Univ. of California, Davis, CA (United States) ; Univ. of California, Irvine, CA (United States)

Directed energy deposition (DED) and forged austenitic stainless steels possess distinct microstructures, but may exhibit similar mechanical properties. In this study, annealing is used to evolve the microstructures of these materials, and scanning electron microscopy techniques are used to probe the similarities and differences of the microstructure-property relationships. A strong correlation between geometrically necessary dislocation (GND) density and hardness is observed for the forged material. Finally, a more complex relationship is observed in the DED material and is attributed to the thermally driven dissolution of the solidification microstructure.

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Research Organization:: Sandia National Laboratories (SNL-NM), Albuquerque, NM (United States)

Sponsoring Organization:: USDOE National Nuclear Security Administration (NNSA)

DOE Contract Number:: AC04-94AL85000; NA0003525

OSTI ID:: 1429646

Report Number(s):: SAND--2017-10658J; 657485

Journal Information:: JOM. Journal of the Minerals, Metals & Materials Society, Journal Name: JOM. Journal of the Minerals, Metals & Materials Society Journal Issue: 3 Vol. 70; ISSN 1047-4838

Publisher:: Springer

Country of Publication:: United States

Language:: English

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36 MATERIALS SCIENCE
Additive Manufacturing (AM)
Annealing
Austenitic Steels
Recrystallization
Stainless Steels

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