Anomalous Annealing Response of Directed Energy Deposited Type 304L Austenitic Stainless Steel

Smith, Thale R.; Sugar, Joshua D.; Schoenung, Julie M.; San Marchi, Chris

doi:10.1007/s11837-017-2711-1

Anomalous Annealing Response of Directed Energy Deposited Type 304L Austenitic Stainless Steel

Journal Article · Wed Jan 03 00:00:00 EST 2018 · JOM. Journal of the Minerals, Metals & Materials Society

DOI:https://doi.org/10.1007/s11837-017-2711-1· OSTI ID:1482736

Smith, Thale R. ^[1]; Sugar, Joshua D. ^[2]; Schoenung, Julie M. ^[3]; ^[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 deposited (DED) and forged austenitic stainless steels possess dissimilar microstructures but can exhibit similar mechanical properties. In this study, annealing was used to evolve the microstructure of both conventional wrought and DED type 304L austenitic stainless steels, and significant differences were observed. In particular, the density of geometrically necessary dislocations and hardness were used to probe the evolution of the microstructure and properties. Forged type 304L exhibited the expected decrease in measured dislocation density and hardness as a function of annealing temperature. Here, the more complex microstructure–property relationship observed in the DED type 304L material is attributed to compositional heterogeneities in the solidification microstructure.

View Accepted Manuscript (DOE)

Research Organization:: Sandia National Laboratories (SNL-CA), Livermore, CA (United States)

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

Grant/Contract Number:: AC04-94AL85000

OSTI ID:: 1482736

Alternate ID(s):: OSTI ID: 1429646

Report Number(s):: SAND--2018-12162J; 669068

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:: SpringerCopyright Statement

Country of Publication:: United States

Language:: English

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